A student places a beaker on a hot plate. To the beaker, he adds a clear liquid and a white powder. The mixture instantly begins to bubble. He concludes that a chemical reaction has occurred. Do you agree with his conclusion? Why or why not? Please explain.

Answers

Answer 1

true, because if it wasn't a chemical reaction it would have proceeded to stay the same. but it begins to bubble.
sorry if this isn't the best answer I'm trying my best.

Answer 2

yes, the bubbling of the solution means a gas is being created, which is proof of a chemical reaction

Related Questions

Answers

It’s easier to determine the elecron configurations for the p-block elements in periods 1,2,3 than to determine the electrons configurations for the rest of the p-block elements in the periodic table beacause from period 4, specifically from the element 31 (Ga), the atoms start to fill the d orbitals, and the energy levels of the 3d orbitals ara quite similar to the energy levels of 4p orbitals. So, for the elements Cr and Cu the right configurations do not match the configurations predicted using Aufbau method and Hund rules. Those are not the only exceptions but the two first. All is due to the proximity of the energy of the d and p orbitals and the fact that the rearrangement of the electrons result in a lower energy level.

Answer:It’s easier to determine the elecron configurations for the p-block elements in periods 1,2,3 than to determine the electrons configurations for the rest of the p-block elements in the periodic table beacause from period 4, specifically from the element 31 (Ga), the atoms start to fill the d orbitals, and the energy levels of the 3d orbitals ara quite similar to the energy levels of 4p orbitals. So, for the elements Cr and Cu the right configurations do not match the configurations predicted using Aufbau method and Hund rules. Those are not the only exceptions but the two first. All is due to the proximity of the energy of the d and p orbitals and the fact that the rearrangement of the electrons result in a lower energy

Explanation:

How does the process of waste removal in a unicellular organism compare to the waste removal in a multicellular organism

Answers

The digestive system of multicellular is made up of several organs that work together to break down food so that it may be used in the body. Unicellular organisms have organelles, similar to organs, which help to digest food that will be used by the cell

Identical objects are placed in Beaker A and Beaker B. The objects float as shown in the diagram. What can you conclude about the liquid in each of the beakers?

a
Question 6 options:

The liquid in Beaker B has a greater density than the liquid in Beaker A.

The liquid in Beaker A has a greater density than the liquid in Beaker B.

The liquid in Beaker A has a greater density than the objects. The liquid in Beaker B is less dense than the objects.

Both liquids are less dense than the objects.

I think the answers are B or D please help me!

Answers

I think it is a but dont take me for it. I searched it and thats what I found since liquid in beaker B is more dense then realtivley speaking the object is less dense compared other liquid and floats at a higher level.

The Answer is A.).
YEAH YEAH I KNOW I NEED 20 CHARACTERS!
sry Frustrated

Is mass conserved when 50 g of sugar undergoes a physical change?

Answers

yes, mass never changes. No exceptions.

Actually, mass can change, but it cannot be created nor destroyed, so this means that if sugar goes into a physical change, mass CAN be broken off but CANNOT be destroyed, so your answer is yes mass is conserved.

What is the 3rd noble gas

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The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn).

what are the SI base units for :mass length time and volume

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kilograms, meters, seconds, cubic meters

The SI unit for length is meters(m), for mass is kilograms(kg), for volume is cubic meter(m^3), for density kilogram per cubic meter(kg/m^3), for time is seconds(s), and for temperature is kelvins(K).

A centrifuge was used to separate a sample into its components. What conclusion about the sample can be formed based on the technique used? It was a pure substance. It was a compound. It was a heterogeneous mixture. It was a homogeneous mixture

Answers

Its Homogenous Centrifuges are used to speed up the process of separating Homogeneous mixtures.

Answer is: It was a homogeneous mixture.

For example, a centrifuge is used to separate components from blood.

This technique is also used for heterogeneous mixtures.

Centrifugation is a technique using centrifugal force to separate particles from a mixture according to their size, shape and density.

The principle is that the denser particles are forced to the bottom and the lighter particles stay at the top.

why can an automobile use gasoline for power????

1.potential energy is stored in the gasoline
2.kinetic energy is stored in the gasoline
3.static energy is stored in the gasoline
4.nuclear energy is stored in the gasoline

Answers

1. Is the answer your looking for. Can u answer my question throne under yours on the question board please, thank you!

How high in meters must a column of glycerol be to exert a pressure equal to that of a 760-mm column of mercury? The density of glycerol is 1.26g/mL, whereas that of mercury is 13.6g/mL.

Answers

If you know PV=nRT formula it should be clear that the pressure inversely proportional to the volume. Density is directly proportional to volume, so it also inversely proportional to the pressure (assuming the same mass of substance used).
The calculation for this question would be: 760mm*13.6 / 1.26= 8203.17 mm * 1000 meter/mm= 8.2 meter

The gage pressure at the bottom f a column of liquid is
p = ρgh
where
ρ = density
g = acceleration due to gravity = 9.8 m/s²
h = height of the column of liquid

Note that
1 g/mL = 1000 kg/m³

With mercury,
h = 760 mm = 0.76 m
ρ = 13.6 g/mL = 13600 kg/m³
The pressure is
p = (13600 kg/m³)*(9.8 m/s²)*(0.76 m) = 1.0129 x 10⁵ Pa

With glycerol,
ρ = 1.26 g/mL = 1260 kg/m³
In order for the pressure to be the same, the height required, h, is
(1260 kg/m³)*(9.8 m/s²)*(h m) = 1.0129 x 10⁵ Pa
12348 h = 1.0129 x 10⁵
h = 8.2032 m

Answer: 8.203 m

Which of the following is necessary for plants to exhibit phototropism?
A. Gravity
B. Touch
C. Auxin
D. Dormancy

Answers

c. Auxin

The shoot tip, where auxins are found, is the reason the plant moves either away or toward sunlight.

Answer: C. Auxin

Explanation:

Phototropism can be define as the growth of the plant in response to the stimulus of light. The plant parts grow in direction of the sunlight this phenomena is called as positive phototropism. For example, stem. The plant parts when grow against the direction of sunlight this phenomena is called as negative phototropism. For example, root.

The auxin is a plant hormone which is responsible for phototropism. It moves to the darker side of the plant and helps the growth of the plant on that side as compared to the lighter side of the plant. This results in curving of the plant stem tip towards the light hence, results in positive phototropism.

What is the relationship between mass and the end stages of stars

Answers

The mass of stars affect how they end.

Stars with greater mass sometimes end with supernovas, a giant explosion, which can result in black holes or neutron stars, or sometimes nothing.

A medium sized star can result in a planetary nebula, which then results in a white dwarf.

Haha hope this sorta helped :)

Why is the air warmer than the water in a pool on a hot sunny morning? due to surface tension because of water’s specific heat because of capillary action due to water’s solvent properties

Answers

The pools stay cool because of the Certain amount of water that is in the pool.For Example:If were to go to a Water Park,the water is cool there because it's alot of water.I would take forever for a huge Water Park's water to get hot.

Hope this Help. :)

The air is warmer than the pool water because water has a high specific heat, requiring more energy to increase its temperature than air does. Option B is correct.

Specific heat is the amount of energy required to raise the temperature of a substance. Water has a high specific heat, which means it takes more energy to increase its temperature compared to air. This property allows water to absorb a lot of heat without a significant rise in temperature, hence it often feels cooler than the air on a sunny day.

Furthermore, it's also worth noting that this high specific heat of water plays a crucial role in Earth's climate and helps to moderate temperatures.

Hence, B. is the correct option.

The complete question is:

Why is the air warmer than the water in a pool on a hot sunny morning?

A) due to surface tension

B) because of water’s specific heat

C) because of capillary action

D) due to water’s solvent properties

Which statement differentiates between prokaryotic cells and eukaryotic cells?
Eukaryotic cells have DNA; prokaryotic cells do not.
Prokaryotic cells have DNA; eukaryotic cells do not.
Eukaryotic cells have nuclei; prokaryotic cells do not.
Prokaryotic cells have nuclei; eukaryotic cells do not.

Answers

Answer:

Eukaryotic cells have nuclei; prokaryotic cells do not.

Explanation:

Eukaryotic cells have a separate organelle named nucleus (plural: nuclei) which is a double membranous structure meant for the storage of genetic material i.e. chromosomes (DNA). Prokaryotes on the other hand have an irregularly shaped structure named nucleoid instead of nucleus. All the genetic material of the prokaryotes is within the nucleoid. Unlike nucleus, nucleoid does not have any nuclear membrane & it is spread in the cytosol freely.

Answer: Eukaryotic cells have nuclei; prokaryotic cells do not.

Explanation: Eukaryotic cells have chromosomes that are enclosed in nucleus and are separated from the cytoplasm by the Nuclear membrane.

Whereas, on the other hand, Prokaryotic cells only have small range of organelles, usually only a plasma memrane and ribosomes.

which part of the amino acid helps identify features that differentiate one amino acid from another

Answers

The part of the amino acid which helps to identify features that differentiate one amino acid from another is the SIDE CHAIN OF EACH AMINO ACID.
Amino acids are made up of five basic parts, these are:
1. A central carbon atom
2. A hydrogen atom
3. An amino group
4. A carboxyl group and
5. A R group, also known as a side chain.
The side chain distinguishes one amino acid from the other; different amino acids have different side chains.

why is the periodic table called the periodic table

Answers

The periodic table is named as such as it is split into groups with the same number of electrons in the outer shell. These groups can also be called periods which is where the table gets its name from.

The periodic table is called the periodic table because it repeats. All the elements on the periodic table are arranged by atomic number so the elements repeat. It’s almost like in school when you have switch classes they repeat as well. It’s very fascinating to see all these elements organized it the way that that they are.

what is 2000 converted to scientific notation

Answers

2 x 10 ^ 3
should be the answer ^ 3 is the exponent

2 x 10^3 would be scientific

Frank and Lisa are analyzing the chart, which shows the speed at which light travels through different media.

Frank says that light travels through diamond with the greatest frequency. Lisa says that light travels through air with the greatest frequency.

Which best describes the accuracy of these statements?

a.Frank is correct because light travels through diamond at the slowest speed, and speed and frequency have an inverse relationship.

b.Lisa is correct because light travels through air at the fastest speed, and speed and frequency have a direct relationship.

c.Neither person is correct because light does not change frequency when it travels through different media.

d. Both people are correct because light has both an inverse and a direct relationship with frequency, depending on the media.

Answers

It will be C. neither

Answer: The correct answer is "Neither person is correct because light does not change frequency when it travels through different media".

Explanation:

The speed of the wave depends on the medium through which it is travelling. The speed of the light is more in the rarer medium than the denser medium.

Frank says that light travels through diamond with the greatest frequency. Lisa says that light travels through air with the greatest frequency. Both are wrong as the frequency remains constant when the light is travelling from one medium to another. The speed of light is lowest in diamond.

Therefore, the correct option is (c).

In a chemical reaction, Substance A reacts with Substance B and forms a new substance AB. The chemical equation for this reaction is A + B = AB where A and B are the reactants and AB is the product. If you add more and more of only Substance A, there will be

) Less and less of product AB

b) More and more of product AB with no limit to the amount of AB produced

c) No change in the amount of AB produced

d) More and more of product AB but limited by the amount of B

50 POINTS

Answers

where is the option a?

What are all 4 levels of the energy pyramid? HELP ASAP

Answers

Producer, Primary consumers, Secondary consumers and Tertiary consumers.

I'm writing this in the structure of an actual pyramid.

Tertiary Consumers -- Top of the food chain
Secondary Consumers
Primary Consumers -- This is the start of heterotrophs.
Producers -- Bottom of the food chain, these are the plants/autotrophs.

How many grams of O are in 585 g of Li2O

Answers

Final answer:

The amount of oxygen in 585 g of Li2O is calculated using the molar mass of Li2O and the proportion of oxygen's molar mass to Li2O's molar mass, then multiplied by the total mass of Li2O.

Explanation:

To determine how many grams of oxygen are in 585 grams of Li2O, we use the molar mass of Li2O and the molar mass of oxygen. The molar mass of Li2O (lithium oxide) is the sum of the mass of two lithium atoms and one oxygen atom. One mole of Li2O weighs approximately 29.88 g/mol (2 x 6.94 + 16.00), and one mole of oxygen weighs 16.00 g/mol.

To find the mass of oxygen in Li2O:

First, find the moles of Li2O in 585 g: Moles of Li2O = 585 g / 29.88 g/molNext, find the grams of oxygen in that amount of Li2O moles using the molar mass of oxygen: 16.00 g/mol.Multiply the moles of Li2O by the molar mass of oxygen.

Therefore, to calculate the exact grams of oxygen in 585 g of Li2O, you use the proportion of oxygen's molar mass to Li2O's molar mass, which is 16.00/29.88. Multiply this by the given mass of Li2O to find the mass of just the oxygen part:

Learn more about molar mass calculation here:

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To determine the grams of oxygen in 585 g of Li₂O, first calculate the molar mass of Li₂O, find the number of moles in 585 g, and then convert the moles of oxygen to grams. The final result is 335.84 grams of oxygen.

To find the number of grams of oxygen in 585 g of Li₂O, we need to follow these steps:

Determine the molar mass of Li₂O by summing the atomic masses of its elements: Lithium (Li) has an atomic mass of 6.94 g/mol and Oxygen (O) has an atomic mass of 16.00 g/mol. Thus, the molar mass of Li₂O is: (2 * 6.94 g/mol) + 16.00 g/mol = 27.88 g/mol.Calculate the number of moles of Li₂O in 585 g: Number of moles = Mass / Molar Mass = 585 g / 27.88 g/mol = 20.99 moles of Li₂O.Since there is 1 mole of oxygen in each mole of Li₂O, there are 20.99 moles of O in 20.99 moles of Li₂O.Convert moles of O to grams by multiplying the number of moles by the atomic mass of O: Mass of O = Number of moles * Atomic Mass = 20.99 moles * 16.00 g/mol = 335.84 g.

Therefore, there are 335.84 grams of oxygen in 585 grams of Li₂O.

The BEST example of diffraction is the image of

Question 8 options:

a ring around the Sun caused by particles in the air.

a pencil that appears broken in a glass of water.

a fingerprint that appears to be enlarged under a magnifying glass.

your image in a mirror

Answers

Answer: The answer is the ring around the sun created by particles.

Explanation:

Answer:

the first one

Explanation:

i think it is it sound better sense to me

How does the law of conservation of mass apply to this reaction C2H4 + O2 > 2H2O + 2CO2

Answers

Coefficients are used here to balance the number of elements in the products and reactants. Coefficients are numbers that are placed in front of a chemical formulas in an equation. Hope it's useful.

Animals, plants, fungi, and protists are made up of eukaryotic cells, which are cells that

Answers

Eukaryotic cells are found in plants, animals, fungi, and protists. They have a membrane-bound nucleus and organelles. These cells are larger in size and have additional features compared to prokaryotic cells.

Eukaryotic cells are found in plants, animals, fungi, and protists.

These cells have a membrane-bound nucleus and organelles.

They are larger in size compared to prokaryotic cells and can be unicellular or multicellular.

Eukaryotic cells are capable of both asexual and sexual reproduction.

They are characterized by features such as a semipermeable and flexible cell membrane, well defined nucleus, and the presence of membrane-bound organelles.

Animals, plants, fungi, and protists are made up of eukaryotic cells, which are cells that contain a nucleus and organelles, enclosed by a plasma membrane.

Eukaryotic cells are cells that contain a nucleus and organelles, and are enclosed by a plasma membrane.

Organisms that have eukaryotic cells include protozoa, fungi, plants, and animals.

Eukaryotic cells are more complex compared to prokaryotic cells, which lack a membrane-bound nucleus.

In eukaryotic cells, the genetic material is housed within a nucleus, and they contain various organelles such as mitochondria, which are essential for various cellular functions.

These cells are characteristic of members of the four kingdoms of Eukarya: animals, plants, fungi, and protists.

The amount of energy in the bonds of the reactants plus any energy absorbed equals the amount of energy in the bonds of the products plus any energy _____.

Answers

The answer to this question is Released
This is the law of energy conservation that being done in order to reduce the total consumption of energy by using less energy.
In most cases, the conservation requires either by using the intial energy more efficiently or by reducing the total result of the energy formed.

The amount of ................................. in the bonds of the products plus any energy GIVEN OFF WHEN THE PRODUCTS ARE FORMED.
During chemical reaction, energy are needed to break the chemical bonds which hold the molecules of the reactants together and energy is always given off when product are formed. At the end of the reaction, the quantities of these energies must be equal to show that energy is conserved.

A neutral Adam possesses an atomic number of 15 and atomic mass of 31 three electrons are gained what is the result of a conversion

Answers

a negatively charged ion

Salt is a compound made from sodium (Na) and chlorine (Cl). Salt : A has properties very similar to sodium. B has properties very similar to chlorine. C has very different properties from sodium and chlorine.

Answers

Mostly a partially b

Answer:

it is c bc i know i was in 7th grade once lol

Explanation:

why conduction is slower in a gas than in a liquid or solid.

Answers

because the molecules are more closely packed in solids and gasses

conduction is a transfer of thermal energy with no overall transfer of matter. Conduction in gases is slower than in liquids and solids because the particles in gas collide less often

Make a connection between bacteria and extreme environment

Answers

One example of bacteria that live in an extreme environment are the thermophilic species that live in the hot springs of Yellowstone National Park. Thermophilic means heat-loving and the waters in which these bacteria live can rise above 70 degrees Celcius after being heated by lava below the surface. Most life would die at that temperature however some bacteria have evolved to survive the extreme heat.

Liquid alcohol will change to vapor when its temperature reaches the

Answers

When it reaches the boiling point. When a substance reaches their boiling point, they change from liquid state to vapor state. Alcohol has a boiling point of around 78°C, so when you heat liquid alcohol to that temperature, it'll change to vapor.

A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: C 7 H 16 .

Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas.

Answers

C7H16, where C=12.01, and H=1.01, so the weight of the molecule would be 7(12.01)+16(1.01), or 100.23. The percentage of carbon would be found by ((7*12.01)/100.23)*100=83.88% Carbon
((16*1.01)/100.23)*100=16.12% Hydrogen

The percent composition of carbon in a given hydrocarbon is 83.91%.

The percent composition of hydrogen in a given hydrocarbon is 16.09%.

Given:

The hydrocarbon ,[tex]C_7H_{16}[/tex]

To find:

The percentage composition (by mass) of carbon and hydrogen in the given hydrocarbon.

Solution:

The atomic mass of carbon atom = 12.0107 g/molThe atomic mass of hydrogen atom = 1.00784 g/mol

The molecular mass of given hydrocarbon ,[tex]C_7H_{16}[/tex]:

[tex]=7\times 12.0107 g/mol+16\times 1.00784 g/mol=100.20034 g/mol[/tex]

Number of carbon atoms in a single molecule of given hydrocarbon = 7

The mass percentage of carbon in given hydrocarbon:

[tex]C\%=\frac{7\times 12.0107 g/mol}{100.20034 g/mol}\times 100=83.9068\%\approx 83.91\%[/tex]

The percent composition of carbon in a given hydrocarbon is 83.91%.

Number of hydrogen atoms in a single molecule of given hydrocarbon = 16

The mass percentage of hydrogen in given hydrocarbon:

[tex]H\%=\frac{16\times 1.00784 g/mol}{100.20034 g/mol}\times 100=16.0932\%\approx 16.09\%[/tex]

The percent composition of hydrogen in a given hydrocarbon is 16.09%.

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