CHEMISTRY HIGH SCHOOL

When layered into a single column, which water will sink to the bottom? A.
cold water with no salt







B.
warm water with no salt







C.
warm, salty water







D.
cold, salty water

Answers

Answer 1
Answer: The answer is A. cold water with no salt. :)

Related Questions

1. The science that deals with heredity and the factors affecting the transmission of the characteristics is 2. The trait that is usually hidden and will just come out on the second generation is 3. The appearance of the offspring is referred to as 4. The genetic make-up of the genes of the offspring is 5. Having two identical alleles of a particular gene or genes is called 6. The father of Science of Genetic is 7. It is the trait that is being expressed in an organism. 8. The extent to which something is probable is 9. The offspring of two plants/animals of different species or varieties is called 10. It is the number of times that the genotype would appear in an offspring after a test cross is 11. The relative number of offspring manifesting a particular trait or a combination of traits. 12. Having two different alleles of a particular gene or genes is​
The curved top surface of a liquid column
What is the net ionic equation? (This is already balanced, just need the net ionic) 2CH3COOH(aq)+ Sr(OH)2(aq)----> Sr(CH3COO)2(aq)+2H2O(l)
What is the volume occupied by 0.108 mol of helium gas at a pressure of 0.909 atm and a temperature of 306 K ? Express your answer using three significant figures. Would the volume be different if the gas was argon (under the same conditions)? The volume would be the lower for argon gas. The volume would be the same for argon gas. The volume would be the greater for argon gas.
Which element is malleable and a good conductor of electricity at STP?(1) argon (3) iodine(2) carbon (4) silver

Which event best helped Becquerel determine uraniun radiates rays ?A)a cloudy day
B)a substance glowing in the dark
C)wrapping of ore in paper
D)exposure of a photographic plate

Answers

Exposure of a photographic plate was the event that best helped Becquerel to determine uranium radiates rays. The correct option in regards to the given question is option "D". Henri Becquerel was a French physicist and he was born on 15th December 1852 and died on 25th August 1908. He was the scientist that discovered radioactivity. In the year 1903, he was awarded with the Nobel Prize for physics for the ground breaking work he did. In the year 1896, Becquerel published seven important papers on his work on radioactivity. This was the work that made him famous around the globe.

Like he said the answer is "D"

2. The model on the right looks bumpy, but when you break a large salt crystal in two, the edges of the split often look straight and feel smooth. Is there a problem with the model?​

Answers

he Solids model formed by atoms as solid spheres for macroscopic measurements, the model has no problems, because the atoms are extremely small

Dalton's atomic model was the first scientifically based model formulated in 1808, it consists of atoms with spheres that cannot be divided and solids are formed by contact between the spheres and chemical compounds are formed by joining atoms of two or more elements, this model is used to approximate solids such as solid spheres there are today.

The size of these spheres (atoms) is very small, nowadays it is known that it is of the order of 10⁻⁹ m, therefore, having a macroscopic crystal more than 10⁻⁶ m in length, it is impossible to measure fluctuations in the sizes of the spheres, since there are 10⁹ spheres in this volume, therefore it is not possible to measure the fluctuations with instruments,

To be able to measure this fluctuation, very small samples and very high resolution transmission microscopes are needed.

In conclusion, the model of the atom as solid spheres for macroscopic measurements, the model has no problems.

Learn more about solids here:

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Answer:

Maybe the sizes are too big which means that they need to be smaller because the more compact they are the more smooth and straight they will be because when they are too big it is easier to break them which would lead to a bumpy surface.

Explanation:

I don't know :)

Describe three possible ways in which a hypothesis may arise

Answers

1- By forming evidence. 

This is when evidence and statistics are formed and found and can help form a hypothesis. 

2- Multiple attempts

This is when multiple attempts form the same product

3- Enough research

Research is shown and enough to prove something. 

A sample of gas isolated from unrefined petroleum contains 90.0% CH4, 8.9% C2H6, and 1.1% C3H8 at a total pressure of 307.2 kPa. What is the partial pressure of each component of this gas?

Answers

The partial pressure of each component of the gas are:

1. The partial pressure of CH₄ is 276.48 KPa

2. The partial pressure of C₂H₆ is 27.34 KPa

3. The partial pressure of C₃H₈ is 3.38 KPa

We'll begin by calculating the mole fraction of each gas.

For CH₄:

Percentage of CH₄ = 90%

Total = 100%

Mole fraction CH₄ =?

Mole fraction = mole / total

Mole fraction CH₄ = 90 / 100

Mole fraction CH₄ = 0.9

For C₂H₆:

Percentage of C₂H₆ = 8.9%

Total = 100%

Mole fraction C₂H₆ =?

Mole fraction = mole / total

Mole fraction C₂H₆ = 8.9 / 100

Mole fraction C₂H₆ = 0.089

For C₃H₈:

Percentage of C₃H₈ = 1.1%

Total = 100%

Mole fraction C₃H₈ =?

Mole fraction = mole / total

Mole fraction C₃H₈ = 1.1 / 100

Mole fraction C₃H₈ = 0.011

Finally, we shall determine the partial pressure of each gas. This can be obtained as follow:

1. Determination of the partial pressure of CH₄

Mole fraction CH₄ = 0.9

Total pressure = 307.2 KPa

Partial pressure of CH₄ =?

Partial pressure = mole fraction × Total pressure

Partial pressure of CH₄ = 0.9 × 307.2

Partial pressure of CH₄ = 276.48 KPa

2. Determination of the partial pressure of C₂H₆

Mole fraction C₂H₆ = 0.089

Total pressure = 307.2 KPa

Partial pressure of C₂H₆ =?

Partial pressure = mole fraction × Total pressure

Partial pressure of C₂H₆ = 0.089 × 307.2

Partial pressure of C₂H₆ = 27.34 KPa

3. Determination of the partial pressure of C₃H₈

Mole fraction C₃H₈ = 0.011

Total pressure = 307.2 KPa

Partial pressure of C₃H₈ =?

Partial pressure = mole fraction × Total pressure

Partial pressure of C₃H₈ = 0.011 × 307.2

Partial pressure of C₃H₈ = 3.38 KPa

Learn more: brainly.com/question/15754440

Answer:

276.48 atm → CH₄

27.3 atm → C₂H₆

3.38 atm → C₃H₈

Explanation:

Percentages of each gas, are the mole fraction

0.9 CH₄

0.089 C₂H₆

0.011 C₃H₈

Mole fraction = Partial pressure each gas/ Total pressure

0.9 = Partial pressure CH₄ / 307.2 kPa

307.2 kPa . 0.9 = 276.48 atm

0.089 = Partial pressure C₂H₆ / 307.2 kPa

307.2 kPa . 0.089 = 27.3 atm

0.011 = Partial pressure C₃H₈ / 307.2 kPa

307.2 kPa . 0.011 = 3.38 atm

What is the total mass of oxygen in 1.00 mole of Al2(CrO4)3

Answers

1 mol of this atom would yield 12 moles of Oxygen, (using the number of atoms that they gave in 1 molecule of Al2(CrO4)3. Therefore, the atomic mass of Oxygen is 16, and there are 12 moles of Oxygen atoms. In total, the mass would be 12  * 16 = 192 grams of Oxygen.

Final answer:

The compound Al2(CrO4)3 contains 12 oxygen atoms per formula unit. Knowing that one mole of oxygen atoms has a mass of 16.00 grams, the total mass of oxygen in 1.00 mole of Al2(CrO4)3 is 12 * 16.00 = 192.00grams.

Explanation:

The primary task here is to find the total mass of oxygen in 1.00 mole of Al2(CrO4)3. This is a classic chemistry problem that involves understanding the composition and molar mass of compounds. In the compound Al2(CrO4)3, the subscript 3 after (CrO4) means there are three chrome tetraoxides in one formula unit of the compound.

Every CrO4 ion is composed of one chromium atom and four oxygen atoms. Therefore, three CrO4 ions will contain 3 * 4 = 12 oxygen atoms.

Knowing that one mole of oxygen atoms weighs approximately 16.00 grams, we can find the total mass of oxygen in the compound by multiplying this molar mass by the number of oxygen atoms. Again, in one mole of Al2(CrO4)3 we have 12 oxygen atoms, hence 12 * 16.00 g = 192.00 grams.

So, the total mass of oxygen present in 1.00 mole of Al2(CrO4)3 is 192.00 grams.

Learn more about Molar Mass here:

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Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. A bottle contains 525 mL of insulin at a concentration of 50.0 mg/mL . What is the total mass of insulin in the bottle?

Answers

26.25 ? I am not sure about my answer ;;-;; 
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