Which subatomic particle is the identity of the atom and why?
How do the crystallization and settling of the earliest formed minerals affect the composition of the remaining magma?
The process of early mineral formation involves their crystallization and settling, reducing their amount in the remaining magma. This changes the magma's composition, making it richer in lighter elements leading to the formation of different minerals.
Explanation:
The crystallization and settling of the earliest formed minerals is a process called fractional crystallization. This affects the composition of the remaining magma significantly. As the early forming minerals, usually heavier ones like olivine and pyroxene, crystallize, they often sink towards the bottom due to their higher density. This reduces the amount of these components in the remaining magma, essentially changing its composition. The leftover magma typically becomes gradually enriched in lighter elements, such as silicon, aluminum, potassium, and sodium, leading to the formation of different minerals such as feldspars and quartz.
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The crystallization and settling of early-formed minerals in magma lead to changes in the composition of the remaining melt, resulting in the formation of different igneous rock types.
The crystallization and settling of early-formed minerals within magma significantly influence the remaining melt's composition in a process known as fractional crystallization. As magma cools, minerals with higher melting points crystallize first, gradually removing them from the molten portion. These early crystallizing minerals, often denser than the remaining magma, tend to settle to the magma chamber's bottom.
This settling process results in the depletion of certain elements and compounds from the melt, making it more evolved or differentiated. The remaining magma continues to cool and may form late-crystallizing minerals with a composition reflecting this evolution. The end result is the formation of igneous rocks with distinct mineral compositions, influenced by the sequential crystallization and settling of minerals.
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Define physical change and chemical change and give examples of each type of change
Final answer:
A physical change involves no bonds being broken or formed and the properties of the substances remain the same. Examples of physical changes include dissolving sugar in water and melting ice. A chemical change occurs when one or more substances change into different substances with different properties. Examples of chemical changes include burning wood and rusting of iron.
Explanation:
Physical Change
Physical changes are changes in which no bonds are broken or formed. This means that the same types of compounds or elements that were there at the beginning of the change are there at the end of the change. Because the ending materials are the same as the beginning materials, the properties (such as color, boiling point, etc.) will also be the same. Physical changes involve moving molecules around, but not changing them. Some types of physical changes include:
Dissolving sugar in waterMelting iceStretching a rubber bandChemical Change
Chemical changes occur when one or more substances change into different substances. During a chemical change, new substances are formed with different properties. Chemical changes are often harder to reverse than physical changes. Some examples of chemical changes include:
Burning woodRusting of ironCooking foodGasoline has a density of 0.65 g/ml. what is the mass in kilograms if the volume is 34 l
Calculate the specific heat of a substance when 63j of energy are transferred as heat to an 8.0 g sample to raise it temperature from 314 k to 340 k
The formula for energy or enthalpy is:
E = m Cp (T2 – T1)
where E is energy = 63 J, m is mass = 8 g, Cp is the specific heat, T is temperature
63 J = 8 g * Cp * (340 K – 314 K)
Cp = 0.3 J / g K
Answer : The specific heat of substance is 0.30 J/g.K
Explanation :
Formula used :
[tex]Q=m\times c\times \Delta T[/tex]
or,
[tex]Q=m\times c\times (T_2-T_1)[/tex]
where,
Q = heat = 63 J
m = mass of substance = 8.0 g
[tex]C_w[/tex] = specific heat of substance = ?
[tex]T_1[/tex] = initial temperature = 314 K
[tex]T_2[/tex] = final temperature = 340 K
Now put all the given value in the above formula, we get:
[tex]63J=8.0g\times c\times (340-314)K[/tex]
[tex]c=0.30J/g.K[/tex]
Therefore, the specific heat of substance is 0.30 J/g.K
Which of these ions have six d electrons in the outermost d subs hell
Ions with six d electrons in the outermost d subshell can be found in transition metal elements such as Cr³+(d³), Co²+(d²), Ni²+(d³), Cu²+(d³), and Zn²+(d¹⁰)
Explanation:The ions with six d electrons in the outermost d subshell are typically found in the transition metal elements.
For example, the ion with six d electrons in the outermost subshell is Cr³+(d³).
Other ions with six d electrons in the outermost subshell include Co²+(d²), Ni²+(d³), Cu²+(d³), and Zn²+(d¹⁰).
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The chemical formula for a molecule that contains two chlorine c1 atoms is
Volume measurements will be made using a 25-ml graduated cylinder, which has major scale divisions marked every 2 ml and minor scale divisions every 0.2 ml. what is the estimated uncertainty in the volume measurements
Actually, the uncertainty point is when we have to estimate one place smaller than what the graduated cylinder can accurately read. So in this case, the smallest that we can accurately read is given by the minor marks of 0.2 mL. So if it is in between two minor marks we can only estimate the number, therefore the uncertainty is +/- 0.1ml.
Answer:
The estimated uncertainty is ±0.1 ml
Explanation:
Measurements are usually associated with uncertainty which depends on the instrument used or the procedure employed.
It is given that the graduated cylinder of volume 25 ml has a major scale marked every 2 ml and minor scale with 0.2 ml. In general measurements made with graduated cylinders can be estimated one decimal place beyond the smallest division. In this case, the volume of the liquid can be read to the nearest 0.1 division. Hence, the uncertainty would be ± 0.1 ml.
Is helium a homogeneous or heterogeneous mixture or compound or element?
If the density of iron is 7.8 gram and you find an iron nail weighing 15 grams what would volume of the nail be
Number 2 how many moles of propane (C3H8) are there in 6.2 g of propane? Correct answer will get brainliest.
0.1409 moles of propane (C3H8) are present in 6.2g of propane.
What is propane?Propane is an alkane with chemical formula of C3H8.The molecule of propane is made of three carbon atoms and eight hydrogen atoms.Grams to mole conversion:Multiply the number of atoms by the atomic weight for each element in the compound.Add all of your answers to find the molar mass of the compound.Divide the number of grams of the compound by the molar mass of the compound to find the number of moles.Atomic mass of propane is 44.1g
6.2g of C3H8 ( 1mol C3H8/44.1g C3H8 )
= 0.1409 mol C3H8.
Hence, option B is the answer.
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What is the volume of 12.8 g of a liquid that has a density of 0.789 g/mL?
Answer: The volume of liquid is 16.22 mL.
Explanation:
Density is defined as the ratio of mass of the object and volume of the object.
Mathematically,
[tex]\text{Density}=\frac{\text{Mass of the object}}{\text{Volume of the object}}[/tex]
We are given:
Density of liquid = [tex]0.789g/mL[/tex]
Mass of liquid = 12.8 g
Putting values in above equation, we get:
[tex]0.789g/mL=\frac{12.8g}{\text{Volume of liquid}}\\\\\text{Volume of liquid}=16.22mL[/tex]
Hence, the volume of liquid is 16.22 mL.
What color did the bromothymol blue indicator turn when it was added to the test tube containing citric acid?
Classify each of these soluble solutes as a strong electrolyte, a weak electrolyte, or a nonelectrolyte. solutes formula nitric acid hno3 lithium hydroxide lioh hydrofluoric acid hf ammonia nh3 potassium chloride kcl ethanol c2h5oh glucose c6h12o6
Final answer:
Nitric acid and lithium hydroxide are classified as strong electrolytes, meaning they fully dissociate into ions in solution. Hydrofluoric acid and ammonia are weak electrolytes, partially dissociating into ions. Ethanol and glucose are nonelectrolytes, dissolving without forming ions.
Explanation:
When classifying solutes as strong electrolytes, weak electrolytes, or nonelectrolytes, we examine how they dissociate in water. A strong electrolyte dissociates completely into ions, a weak electrolyte only partially dissociates, and a nonelectrolyte does not dissociate at all in solution.
Nitric acid (HNO3) is a strong electrolyte because it dissociates completely into H+ and NO3- ions in aqueous solution.Lithium hydroxide (LiOH) is also a strong electrolyte, as it dissociates into Li+ and OH- ions when dissolved in water.Hydrofluoric acid (HF) is a weak electrolyte because it only partially dissociates into H+ and F- ions.Ammonia (NH3), when dissolved in water, forms ammonium (NH4+) and hydroxide (OH-) ions, but because the reaction is reversible and the degree of dissociation is not complete, it is also considered a weak electrolyte.Potassium chloride (KCl) is a strong electrolyte that fully dissociates into K+ and Cl- ions.Ethanol (C2H5OH) and glucose (C6H12O6) are both nonelectrolytes; they dissolve as molecules without forming ions in aqueous solution.A student calculates the density of iron as 6.80 g/cm3 using lab data for mass and volume. a handbook reveals that the correct value is 7.86 g/cm3.what is the percent error?
The student's measurement is 13.486% less than the true value. The percent error is 13.486%.
Given information:
Measured value = 6.80 [tex]\rm \frac{g}{cm^3}[/tex]
True value = 7.86 [tex]\rm \frac{g}{cm^3}[/tex]
Percent error is a measurement of the discrepancy between an experimental or estimated value and a true or accepted value.
The percent error is calculated using the following formula:
[tex]\rm Percent \ error = |\frac{(measured \ value - true\ value)}{true \ value}| \times 100[/tex]
In this case, the measured value is 6.80 g/cm3 and the true value is 7.86 g/cm3. So, the percent error is:
[tex]\rm Percent \ error = |\frac{(6.80 - 7.86)}{7.86}| \times 100%[/tex]
Percent error = -13.486005089058532 %
The negative sign indicates that the measured value is less than the true value. So, the percent error is 13.486%. The student's measurement is 13.486% less than the true value.
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Final answer:
The percent error in the calculated density of iron compared to the actual value is approximately 13.49%. The correct density of iron is 7.86 g/cm³, which can be converted to 7860 kg/m³ for different unit requirements.
Explanation:
The student is asking how to calculate the percent error in the measured density of iron. The percent error can be found using the formula: percent error = |(experimental value - actual value) / actual value| × 100%.
In this case, the experimental value of density is 6.80 g/cm³ and the actual value from the handbook is 7.86 g/cm³. Plugging these values into the formula gives us: percent error = |(6.80 - 7.86) / 7.86| × 100% ≈ 13.49% (rounded to two decimal places).
To convert the correct density of iron from g/cm³ to kg/m³, multiply the density in g/cm³ by 1000 to convert grams to kilograms and by (100)^3 to convert cm³ to m³, resulting in 7.86 g/cm³ × 1000 kg/g × (100)^3 cm³/m³ = 7860 kg/m³.
How does an elements period number related to the number of the energy level of its valence electrons?
1 kg is equal to...
Options:
1) 103 hg.
2) 103 g.
3) 10-2 cg.
4) 10-2 g.
True or false? an element consists of only single atoms of that element.
These reactions can also be reversed, breaking the large molecules into its individual molecules. what substance would need to be added in order to reverse the reaction
What is minimum volume of oxygen required to react with 42.5 g of aluminum in the synthesis of aluminum oxide at stp?
The molecular structure of water contains two atoms of hydrogen and one atom of oxygen. When water reaches its boiling point and turns into water vapor, what happens to its molecular structure?
A. It remains the same
B. It changes the ratio of atoms
C. It forms bigger molecules
D. It forms lighter molecules
Thanks for helping! x
Jason noticed that his flashlight stopped working. He solved the problem by using the scientific method. Arrange the steps he followed in the correct order in the flowchart.
1.He suspects that the batteries could be dead.
2.He notices that his flashlight stopped working.
3.He replaces the batteries in the flashlight with new batteries.
4.His flashlight works again.He writes a note to himself to buy extra batteries.
Answer:the answer is 2. he noticed that his flashlight stopped working
1. he suspected that the batteries could be dead
3. he replaces the batteries in the flashlight with new batteries
4.his flashlight works again. he writes a note to himself to buy extra batteries
Explanation:
The correct order of steps followed by Jason with respect to the scientific method would be 2, 1, 3, and 4.
The scientific method is a rational order to steps through which phenomena are understood. The steps are;
observationformation of hypothesistesting of the hypothesis by experimentsconclusionThus, in the case of Jason:
He notices that his flashlight stopped working - observationHe suspects that the batteries could be dead - hypothesisHe replaces the batteries in the flashlight with new batteries - experimentationHis flashlight works again. He writes a note to himself to buy extra batteries - conclusionMore on the scientific method can be found here: https://brainly.com/question/7508826?referrer=searchResults
Which of the following will hold its shape?
A. gas
B. solid
C. liquid
D. plasma
Answer:
Solid
Explanation:
A solid will retain its shape; the particles are not free to move around.
The reaction of 1.250 g k with o2 forms 2.273 g of an oxide of potassium that is used in self-contained breathing devices. determine the formula for this oxide of potassium.
According to the Gas Laws, you would changed temperature to change __________.
A. volume and pressure
B. mass and volume
C. weight and volume
D. gravity and volume
An element has three naturally occurring isotopes. Use the information below to calculate the weighted average atomic mass of the element, showing both the setup and the final answer for the calculation.
Isotope
Atomic Mass
Percent Abundance
I
39.96 u
99.59%
II
37.96 u
0.065%
III
35.97 u
0.336%
What is the volume (in cubic inches) of 3.6 lb of titanium? The density of titanium is 4.51 g/cm3
To calculate the volume of titanium given its mass, you must first convert the mass from pounds to grams. Apply the formula volume=mass/density and then convert the volume from cubic centimeters to cubic inches. The volume of 3.6 lb of titanium rounded off to the nearest hundredth is 22.07 cubic inches.
Explanation:To calculate the volume of a substance, you need to use the formula:
volume = mass / density
Given the mass of titanium is 3.6 lb and the density is 4.51 g/cm³, you first need to convert the mass from pounds to grams (since the density is given in g/cm³). This can be done using the conversion factor: 1 lb = 453.59 g.
So, 3.6 lb = 3.6 x 453.59 g = 1632.924 g.
Then, apply the volume formula:
Volume = 1632.924 g / 4.51 g/cm³ = 361.847 cm³
Finally, convert the volume in cm³ to in³, using the conversion factor: 1 cm³ = 0.0610 in³.
So, the volume in in³ is: 361.847 cm³ = 361.847 x 0.0610 in³ = 22.0727 in³
Hence, the volume of 3.6 lb of titanium is approximately 22.07 cubic inches.
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What volume of 0.200 m h3po4 will completely react with 50.00 ml of 0.200 m naoh?
Is the tendency of copper to turn green when exposed to air chemical or physical property?
The green color copper turns when exposed to air is due to a chemical change. This happens because of a reaction between copper and the oxygen in the air, resulting in copper(II) oxide, or patina. The resulting green layer passivates, or protects, the copper from further corrosion.
Explanation:
The tendency of copper to turn green when exposed to air is a chemical change. This color change happens due to a chemical reaction between copper and the oxygen in the air, resulting in the formation of a new compound known as copper(II) oxide, which has a characteristic blue-green color, often referred to as patina. This green layer forms a protective barrier, preventing further corrosion of the underlying copper in a process known as passivation.
For instance, the iconic Statue of Liberty has a characteristic green color because it is made of copper, and the copper has reacted with the elements to form a patina or green covering. This is not merely a physical change, but a chemical reaction between copper and the elements in its surroundings.
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Which elements make up 96.3% of living things?