Answer:
Physical Property
Explanation:
Magnetism is temporary untill you seperate the objects. There is no chemical change involved before, after, or during.
The attraction of certain materials to a magnet is a physical property of matter because it doesn't involve a change in the chemical composition of the material but rather relates to the arrangement and behavior of its electrons.
The attraction of certain types of matter to a magnet is a physical property of matter. Physical properties are characteristics of a substance that can be observed or measured without altering the substance's chemical composition. Magnetism is one such property that describes a material's ability to be attracted to or repelled by a magnet.
The phenomenon of magnetism arises from the alignment and behavior of the electrons in the atoms or molecules of a material. Materials that exhibit magnetic properties have domains where the magnetic moments of the individual atoms or molecules align in a particular direction. When exposed to an external magnetic field, these domains can align with the field, causing the material to be attracted to the magnet.
Importantly, this attraction is reversible and does not involve a change in the material's fundamental chemical composition. When the magnetic field is removed, the material returns to its original state. Common magnetic materials, such as iron, nickel, and cobalt, have unpaired electrons in their electron configurations, which allows them to exhibit strong magnetic properties.
In contrast, chemical properties of matter involve changes in the chemical composition of substances, such as reactions that form new compounds or alter the arrangement of atoms within molecules.
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Which of these statements best explains why the ocean currents in the Northern hemisphere tend to move in the clock-wise direction? (2 points) Question 14 options: 1) The currents deflect to the right due to the rotation of Earth. 2) The change in gravitational forces causes currents to move towards right. 3) The deflection of winds to the left causes the currents to move in the opposite direction. 4) The altered wind speed due to Earth's rotation causes the movement of ocean water.Which of these statements best explains why the ocean currents in the Northern hemisphere tend to move in the clock-wise direction? (2 points) Question 14 options: 1) The currents deflect to the right due to the rotation of Earth. 2) The change in gravitational forces causes currents to move towards right. 3) The deflection of winds to the left causes the currents to move in the opposite direction. 4) The altered wind speed due to Earth's rotation causes the movement of ocean water.
Answer: Option (1) is the correct option that is currents deflect to the right due to the rotation of Earth.
Explanation:
The water on the surface of ocean is moved by winds that blow in certain direction because of the Coriolis effect and spinning of the Earth that's why ocean currents in the Northern hemisphere tend to move in the clock-wise direction.
which of these is true about pure substances?
A. they can only contain one type of atom
B. They can only contain one type of molecule
C. they may contain one type of atom or one type of molecule
D. they can contain different types of atoms and molecules
Answer:
They can only contain one type of atoms, one type of molecules or one type of ionic salts
Explanation:
Remember that substances might be made of:
just one type of atoms: the examples would usually be metals, such as sodium metal (Na) consisting of solely sodium atoms, iron (Fe) metal, gold (Au) metal, as well as gases (typically noble gases, He, Ne, Xe, Ar, Kr, Rn);molecules: the examples would be water consisting of [tex]H_2O[/tex] molecules, any gas, such as [tex]O_2, F_2, SO_3, CO_2[/tex] etc.;ions: the examples would involve any salt, such as NaCl, KBr, NaF etc.That said, pure substances would only contain one type of atoms, one type of molecules or one type of ionic salts. Any additional components of different atoms, molecules or ionic salts would cause a pure substance to become a mixture of several substances.
Answer:
they may contain one type of atom or one type of molecule
How much heat in j is giving out when 85.0g of lead cools from 200.0 c to 10.0c
Answer:
q = - 2067.2 J of Heat is giving out when 85.0g of lead cools from 200.0 c to 10.0 c.
Explanation:
The Specific Heat capacity of Lead is 0.128 [tex]\frac{J}{g\ ^{0}C}[/tex]
This means, increase in temperature of 1 gm of lead by [tex]1 ^{0}\ C[/tex] will require 0.128 J of heat.
Formula Used :
[tex]q = m.c.\Delta T[/tex]
q = amount of heat added / removed
m = mass of substance in grams = 85.0 g
c = specific heat of the substance = 0.128
[tex]q = m.c.\Delta T[/tex] = Change in temperature
= final temperature - Initial temperature
= 10 - 200
= -[tex]190 ^{0}\ C[/tex]
put value in formula
q = - [tex]85\times 0.128\times 190[/tex]
On calculation,
q = - 2067.2 J
- sign indicates that the heat is released in the process
A 6-column table with 2 rows. The first column labeled number of washers has entries 1, 3. The second column labeled Mass of Washers m subscript w (grams) has entries 4.9, 14.7. The third column labeled Mass of Washers m subscript w (kilograms) has entries 0.0049, empty. The fourth column labeled Acceleration due to Gravity a subscript g (meters per seconds squared) has entries empty, 10. The fifth column labeled Force of gravity on the washers F subscript g (kilograms times meters per second squared) has entries 0.049, 0.147. The sixth column labeled Applied force of washers on the car F subscript w c (Newtons) has entries 0049, empty.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A) The acceleration due to gravity for any object, including 1 washer on the string, is always assumed to be ___ m/s2.
B) The mass of 3 washers, when converted to kg, is ___ kg.
C) The applied force of 3 washers will increase the applied force on the car to ___ N.
Please find the blanks, thank you!
Answer:
Your answer is:
Explanation:
A) The acceleration due to gravity for any object, including 1 washer on the string, is always assumed to be 10 m/s2.
B) The mass of 3 washers, when converted to kg, is 0.0147 kg.
C) The applied force of 3 washers will increase the applied force on the car to 0.147 N.
I hope this helps!
- sincerelynini
Answer:
A) 10 m/(s^2)
B) 0.0147 kg
C) 0.147 N
Explanation:
A) It's stated in the table that the acceleration due to gravity is assumed as 10 m/(s^2). If you assume this value in one calculation, then you have to assume the same value in all your calculations.
B) 3 washers have a mass of 14.7 grams. Dividing this mass by 1000, you convert grams into kilograms, that makes 0.0147 kg.
C) Force measured in kilograms times meters per second squared are equivalent to Newtons, therefore, 0.147 kg*m/(s^2) = 0.147 N
How are
complete ionic and net ionic equations written for chemical reactions in aqueous solution
Answer:
Explanation:
Balanced Chemical equation:
HClO₂(aq) + NaOH(aq) → H₂O(l) + NaClO₂ (aq)
Ionic equation:
H⁺(aq) + ClO₂⁻(aq) + Na⁺(aq) + OH⁻(aq) → H₂O(l) + Na⁺(aq) + ClO₂⁻ (aq)
Net ionic equation:
H⁺(aq) + OH⁻(aq) → H₂O(l)
The ClO₂⁻(aq) and Na⁺ (aq) are spectator ions that's why these are not written in net ionic equation. The water can not be splitted into ions because it is present in liquid form.
Spectator ions:
These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.
Chemical equation:
NaCl(aq) + KBr(aq) → NaBr(aq) + KCl(aq)
Ionic equation:
Na⁺(aq) + Cl⁻(aq) + K⁺(aq) + Br⁻(aq) → Na⁺(aq) + Br⁻(aq) + K⁺(aq) + Cl⁻(aq)
Net ionic equation can not be written for this reaction because nothing is changed on both side. There is no solid, liquid and gaseous product. All are aqueous and cancel each other.
the continents of earth were clutered to gether in formation that a scientist named what
Answer:
the continents of earth were clustered together in formation that a scientist named Pangaea.
Explanation:
Before 300 million years ago, our earth was not made up of 7 different continent what we have now. Instead it was single huge mass land that was surrounded by a single ocean called Panthalassa. A lot of migration and collision lead to the formation of Pangaea. An Scientist named Albert Wegener gave the name Pangaea. Later, Pangaea was broken into Gondwanaland and Laurasia.These Lands were then divided into 7 continents.
If you change the temperature of a gas but keep the volume the same, how does the pressure change?
Answer:
Charles' law states that the volume and temperature of a gas have a direct relationship: As temperature increases, volume increases, when pressure is held constant. Heating a gas increases the kinetic energy of the particles, causing the gas to expand.
Explanation:
Final answer:
If the temperature of a gas is increased while keeping the volume constant, the pressure will increase. If the temperature is decreased, the pressure will similarly decrease. This relationship is described by Gay-Lussac's Law.
Explanation:
When you change the temperature of a gas but keep the volume the same, according to Gay-Lussac's Law, the pressure of the gas changes directly with its absolute temperature. In other words, if you increase the temperature of the gas, the pressure will increase as well. Conversely, if you decrease the temperature, the pressure will decrease, as long as the volume is kept constant.
Temperature and Pressure Relationship
The relationship between temperature and pressure in a gas at constant volume is given by the equation P1/T1 = P2/T2, where P1 and P2 are the initial and final pressures, and T1 and T2 are the initial and final absolute temperatures respectively. So, to find out how the pressure changes with temperature, you can rearrange the formula to solve for the new pressure. Essentially, if you double the absolute temperature (measured in Kelvin), you double the pressure.
Need help please give me the right answers not wrong please and thank you
Answer:
2-d
3- d
4. c
5. c
6. a
Explanation:
__is when two genetic sequences bind together because of the hydrogen bonds that form between the base pairs
Answer: Hybridization
Explanation:
I did it on ck12 and got it right and here’s this short story of it
Final answer:
Annealing refers to the process in which two complementary DNA strands bind through hydrogen bonds between their base pairs, A-T and G-C, which are essential in maintaining the structure and function of the DNA double helix.
Explanation:
The process where two genetic sequences bind together because of the hydrogen bonds that form between the base pairs is known as annealing. This is a critical aspect of DNA structure and function, where the complementary base pairs A-T (adenine-thymine) and G-C (guanine-cytosine) come together. The hydrogen bonds hold the bases together, with A and T forming two hydrogen bonds, and G and C forming three hydrogen bonds. This mechanism is not only crucial in the formation of the double helix structure of DNA but is also vital during the processes of DNA replication and transcription, where the genetic code is copied and read to synthesize proteins.
Which statement is true about the activity series? (5 points)
Elements are listed according to their reactivity.
Elements are listed according to their atomic number.
Elements are listed according to their atomic radius.
Elements are listed according to their atomic mass.
Which of the following statements is true about nuclear fusion? (5 points)
It occurs in the sun.
A heavy atom is split.
It can be controlled easily.
An electron is lost by the atom.
The table shows four reactions.
ReactionsReaction Equation
1 C3H8 + 5O2 → 3CO2 + 4H2O
2 C6H12O6 + 6O2 → 6CO2 + 6H2O
3 AgNO3 + NaCl → AgCl + NaNO3
4 2Fe + O2 → 2FeO
Which of the above reactions is an example of a combustion and also a synthesis reaction? (5 points)
1
2
3
4
Answer: Correct statements are given below:
1) In activity series elements are listed according to their reactivity.
2) Nuclear reaction in which low atomic nuclei fuse to form a heavier nucleus with the release of energy. Nuclear fusion reaction occurs in the sun.
3) C3H8 + 5O2 → 3CO2 + 4H2O is the example of a combustion reaction.
4) 2Fe + O2 → 2FeO is the example of synthesis reaction. In synthesis reaction is a type of reaction in which two reactants combine to form a single product.
The activity series is an arrangement of elements in order of reactivity.
The activity series is an arrangement of elements in order of reactivity. The activity series shows the order in which chemical elements will displace each other in a replacement reaction.
A nuclear fusion is said to have occurred when two light nuclei come together to yield a heavier nucleus with the emission of a tremendous amount of energy. Nuclear fusion occurs in the sun.
A combustion reaction refers to the reaction of a substance with oxygen. A synthesis reaction is a reaction in which two or more substances come together to form a new substance. A combustion reaction which is also a synthesis reaction is 2Fe + O2 → 2FeO.
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What is a coefficient?
Answer:
Coefficients are the numbers in front of the formulas.
Answer:
a coefficient is a multiplicative factor in some term of a polynomial, a series, or any expression; it is usually a number, but may be any expression. In the latter case, the variables appearing in the coefficients are often called parameters, and must be clearly distinguished from the other variables.
For example, in
7x^{2}-3xy+1.5+y,}{\displaystyle 7x^{2}-3xy+1.5+y,}
Explanation:
31. Which of these statements is FALSE?
a. Protons have a positive charge.
b. Electrons are negatively charged and have a mass of 1 amu.
c. The nucleus of an atom is positively charged.
d. The neutron is found in the nucleus of an atom.
Answer:
The statement which is false is b. Electrons are negatively charged and have a mass of 1 amu.
Explanation:
Protons can be described as the positively charged part of an atom. Neutrons are the part of an atom which do not carry ant charge. The protons and neutrons are present in the nucleus of an atom. The atomic mass unit of a proton and a neutron is almost 1.
Electrons are the negative charge particles of an atom. They do not have a mass of 1 atomic mass unit. Their atomic mass unit is almost zero. Hence, option B is false.
calculate the molar mass of a metal that forms an oxide having the empirical formula M2O3 and contains 68.04% of the metal by mass. identify the metal.
Answer:
51.094 g/mol
Explanation:
We are given;
Empirical formula as M2O3Percentage of metal M by mass is 68.04%We are required to determine the molar mass of M
Step 1: Determine the percentage by Mass of Oxygen in the compound
% by mass of Oxygen = 100% -68.04%
= 31.96%
Step 2: Mass of M in the compound
Mass of oxygen in the compound = 16.0 g × 3 atoms
= 48.0 g
Therefore; 48.0 g is equivalent to 31.96% of the compound.
Thus; 68.04 % will be equivalent to a mass of ;
= (48.0 g × 68.04%) ÷ 31.96%
= 102.188 g
Step 3: molar mass of M
Mass of M in the compound is 102.188 g
But there are two atoms of M in the compound
Therefore; Molar mass of M = 102.188 g ÷ 2
=51.094 g
Thus, the molar mass of M is 51.094 g/mol
To find the molar mass of a metal in a compound with empirical formula M2O3, assume a 100 g sample and calculate moles of metal and oxygen. The molar mass is found by dividing the mass of metal by its moles. The closest actual metal molar mass corresponds to aluminum.
Explanation:To calculate the molar mass of a metal that forms an oxide with the empirical formula M2O3, we'll start by taking the given percentage of the metal in the compound and assume a 100 g sample for ease of calculation. The mass of the metal in this sample is 68.04 g, and the mass of oxygen is the remaining 31.96 g.
Next, we'll find the number of moles of each element in the compound:
Since the empirical formula is M2O3, this means there are two moles of metal for every three moles of oxygen. We can set up the ratio like this:
We will use the moles of oxygen to figure out the moles of the metal required to form this ratio:
(2 moles M / 3 moles O) = x moles M / 1.9975 moles O
Solving for x gives us:
x = (2/3) * 1.9975 = 1.3317 moles of M
Now, we can calculate the molar mass of the metal by dividing the mass of metal by the moles of metal:
Molar mass of M = 68.04 g / 1.3317 mol = 51.07 g/mol
The metal with a molar mass close to this value is aluminum (Al), with a molar mass of 26.98 g/mol. Taking into account the empirical formula M2O3, we need two moles of Al to make up the mass, so:
2 * 26.98 g/mol = 53.96 g/mol
The value is close to our calculated molar mass, confirming the metal in the oxide is most likely aluminum.
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Which of the following shows both the correct formula and correct name of an acid?
Answer:
Hydrochloric acid (HCl)
Answer: C
Explanation:
Nitrogen gas occupies a volume of 500ml at a pressure of 0.971atm. What volume wi
the gas occupy at a pressure of 1140 mm Hg, assuming the temperature remains
constant?
Answer: 323.67ml
Explanation:please see attachment for explanation. Thanks
To find the new volume of the nitrogen gas at a different pressure, we can use the gas law equation PV = nRT. By rearranging the equation and plugging in the given values, we can calculate the new volume.
Explanation:To solve this problem, we can use the gas law equation: PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin. Since the temperature remains constant, we can simplify the equation to PV = constant. First, we need to convert the pressure from mm Hg to atm by dividing it by 760. Then, we can use the equation to find the new volume:
P1V1 = P2V2
Plugging in the values and solving for V2:
V2 = (P1 * V1) / P2
Let's substitute the given values:
V2 = (0.971 atm * 500 ml) / (1140 mm Hg / 760 mm Hg/ atm)
After converting mL to L and performing the calculation, we get:
V2 = 0.207 L
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Which of the following would be part of an aquatic ecosystem?
Question 6 options:
amount of sunlight
temperature
plankton
sponges
Answer:
Aquatic ecosystem has two components -
Biotic components2.Abiotic components
temperature and amount of sunlight are the part of abiotic component .
while living things like sponges and planktons are the biotic components of ecosystem.
Explanation:
aquatic components are of two types-
freshwater ecosystem( lakes and ponds, river and streams)
marine ecosystem(ocean ecosysyem, estuaries)
planktons-
planktons are found in limnetic zone, availability of sunlight is much here. planktons are zooplanktons and phytoplanktons are very important link in aquatic ecosystem.
sponges
In marine water, the benthic zone is the area below the pelagic zone. Here temperature decreased because of less light perception. This zone is very nutrient rich so organisms which are present here are- bacteria, fungi, sea anemone, sponges and some fishes.
Answer: All of the given choices.
Explanation:
The ecosystem can be defined as the combination of the biotic and abiotic factors. The biotic factors consists of the living systems and the abiotic factors consists of the non living parts of the ecosystem.
The biotic part of the aquatic ecosystem is sponges and plankton. This is because they are living.
The abiotic part of the aquatic system consists of amount of sunlight ad temperature of water because they are non living.
the element neon is an alkaline metal , transition metal , noble gas or metalloid
Answer:
noble gas
Explanation:
why must energy be controlled?
Answer:
Energy should be saved and controlled as it is better for the environment. Excess use of energy of any kind can be disastrous. For example, a kind of energy is stored in the food. If excess food is consumed and wasted, then the country and other people will have to face consequences of it. Malnutrition will rise.
Another kind of energy is the energy in the fuel. If fuel consumption is not controlled then in the near future the resources for the making of fuel will be depleted.
What type of reaction is the following? 2Fe2O3 + 3C -> 4Fe + 3CO2
Why is this not considered single displacement?
Answer:
This is an oxidation/reduction reaction.
Explanation:
C is oxidized (loses electrons) and iron is reduced (gains electrons). C goes from oxidation number zero on the left to oxidation number 4+ on the right. Iron goes from oxidation number 3+ on the left to zero on the right.
What chemicals are produced during the use of e-cigarettes
Answer:
tar and nicotine which are produced when the tobacco leaves are burning.
Which of the following is a physical property of copper
Physical properties of copper metal are high thermal conductivity, high electrical conductivity, ductility, malleability etc.
A physical property is a characteristic of matter that can be observed or measured without changing the substance itself. Examples include color, shape, density, and melting point.
Copper is a metal that has several physical properties that make it useful in various applications. Some of the physical properties of copper are:
1. High thermal conductivity: Copper is an excellent conductor of heat, which makes it useful in various applications such as electrical wiring, plumbing, and heating systems.
2. High electrical conductivity: Copper is also an excellent conductor of electricity, which makes it useful in electrical wiring and other electrical applications.
3. Ductility: Copper is a highly ductile metal, which means it can be easily drawn into wires or other shapes without breaking.
4. Malleability: Copper is a highly malleable metal, which means it can be easily shaped or flattened into thin sheets.
5. Corrosion resistance: Copper is resistant to corrosion, which makes it useful in various applications where it is exposed to moisture or other corrosive materials.
In conclusion, high thermal conductivity, high electrical conductivity, ductility, malleability are the physical properties possessed by copper.
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Final answer:
A physical property of copper includes its malleability, ductility, high thermal and electrical conductivity, and its characteristic pinkish-orange color when freshly exposed.
Explanation:
The question involves identifying a physical property of copper. A physical property can be observed or measured without changing the substance's identity. For copper, some of its physical properties include its reddish-brown color, malleability, ductility, and high thermal and electrical conductivity. Since copper is such a good conductor of electricity, it is often used in electrical wiring. Being ductile, it can be stretched into wires without breaking. Copper's pinkish-orange color when freshly exposed is another key physical property.
Total mass of H2O2 in 20 grams of an aqueous H2O2 solution
Answer:
3= (x/20.0g) x 100%
or (20)(0.03)
Answer 0.6g
Final answer:
The total mass of H2O2 in a 20 grams 3.00% aqueous H2O2 solution is 0.6 grams, calculated by taking 3.00% of the total mass of the solution.
Explanation:
To calculate the total mass of H2O2 in 20 grams of a 3.00% aqueous H2O2 solution, use the percentage by mass. The mass of H2O2 can be found by multiplying the total mass of the solution by the percentage of H2O2 in the solution (3.00%).
The calculation is as follows:
Total mass of the solution = 20 gramsPercentage of H2O2 by mass = 3.00%Mass of H2O2 = 20 grams × 3.00% = 0.6 gramsTherefore, the amount of H2O2 in a 20 grams aqueous solution is 0.6 grams.
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Use your knowledge of the law of conservation of mass to answer the following question: In the lab, a student reacts lithium with oxygen to produce lithium oxide. (Lithium + Oxygen -----> Lithium Oxide) How much lithium will be needed to react with 5.4 grams of oxygen to produce 24.6 grams of lithium oxide?
Answer:
It can't be done.
Explanation:
If you have only 5.4 g of oxygen, the most lithium oxide you can get is 7.7 g.
Only 2.3 g of lithium will react. and the other 22.3 g of lithium will not be used.
Weak acids and weak bases react with metals and have the ability to corrode metals.
True
False
Answer:
True
Explanation:
Answer:
TRUE
Explanation:
PLEASE HELP ASAP
Which group tells the three unifying characteristics of chordates?
notochord, gill slits, dorsal nerve cord
dorsal nerve cord, radial symmetry, three layers of cells
water vascular system, backbone, gill slits
exoskeleton, notochord, lungs
The group that tells the three unifying characteristics of chordates is "notochord, gill slits, dorsal nerve cord."
Chordates are a group of animals that have these three key features:
1. Notochord: This is a flexible rod-like structure that runs along the length of the animal's body. It provides support and helps with locomotion.
2. Gill Slits: Chordates have openings called gill slits in their throat region. These slits are used for respiration in aquatic chordates, allowing them to extract oxygen from the water.
3. Dorsal Nerve Cord: Chordates have a nerve cord that runs along their back, called the dorsal nerve cord. This cord is part of their nervous system and serves as the main communication pathway between the brain and the rest of the body.
By having these three characteristics, notochord, gill slits, and dorsal nerve cord, animals can be classified as chordates. Remember that these characteristics may vary or be modified in different groups of chordates, but they are the unifying traits that define the chordate group.
in the wave-mechanical model, an orbital is a region of space in an atom where there is
Answer:
electrons
Explanation:
The orbitals are the spaces around the nucleus.
Neutrons and protons are in the nucleus of an atom, and the electrons revolve around the nucleus.
30.04
Acid rain can be destructive to both the natural environment and human-made structures. The equation below shows a
reaction that occurs that may lead to the formation of acid rain.
3NO2 + H2O → 2HNO3 + NO
How many moles (precise to the nearest 0.01 mol) of nitric acid are produced from 300.00 mol of nitrogen dioxide?
200 moles of nitric acid.
Explanation:
We have the following chemical equation:
3 NO₂ + H₂O → 2 HNO₃+ NO
Taking in account the chemical equation, we devise the following reasoning:
if 3 moles of nitric dioxide (NO₂) produce 2 moles of nitric acid (HNO₃)
then 300 moles of nitric dioxide (NO₂) produce X moles of nitric acid (HNO₃)
X = (300 × 2) / 3 = 200 moles of nitric acid.
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find the solution for 4x+7=22+x
Answer: X = 5
Explanation: 4x + 7 = 22 + x
Collect like terms
4x — x = 22 — 7
3x = 15
3x/3 = 15/3
X = 5
The diagram shows a chicken embryo and a human
embryo.
Which is best supported by the diagram
A.Because their embryos have tails, chickens and
humans do not likely share a common ancestor with
fish
B.Because their embryos have structures similar to
gills, chickens and humans likely share a common
ancestor with fish.
C.Chickens and humans have homologous structures
as embryos, so they are not likely related to each
other.
D.Chickens and humans have homologous structures
as embryos, so they are not likely related to any other
organisms.
Answer:
The correct option is B) Because their embryos have structures similar to
gills, chickens and humans likely share a common ancestor with fish.
Explanation:
Evolutionary studies show common traits which are present among organisms of different species. Based on these traits, we can tell that which species might have shared common ancestors in the past.
In the structure shown above, we can see that the embryo of a human and a chicken have a structure similar to the gills of fishes. This shows that these organisms might have shared a common ancestor in the past.
Answer:
The correct answer is B
During all chemical reactions,mass energy, and charge are...
1.Absorbed
2.Formed
3.Conserved
4.Released
Answer:
3
Explanation:
According to law of conservation of mass energy and charge the mass energy and charge will remain conserved.