CHEMISTRY HIGH SCHOOL

Formed when chemicals in the air get into rain and up the acidity levels

Answers

Answer 1
Answer:

Acid Rain is formed when chemicals in the air get into rain and up the acidity levels!!!!!!

Hope this helps guys!
Answer 2
Answer:

Answer:

yes acid rain

Explanation:

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20 g of sugar is stirred into a beaker containing 100 g of water. After the sugar has completely dissolved, the solution is put on a scale. What is the mass of the solution?

Answers

The mass of the solution of sugar and water is 120 grams.

What is mass?

Mass is the quantity of matter of a physical body.

The mass of the sugar is given is 20g

The mass of the water is 100 g.

100 + 20 = 120 gram

Thus, the mass of the solution of sugar and water is 120 grams.

Learn more about mass

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The mass of the solution should be 120g since 20g of sugar were added to 100g and 100+20=120.
I hope this helps.  Let me know in the comments if anything is unclear.  

a student decreases the temperature of a 556 cm^3 balloon from 278 K to 231 K. Assuming constant pressure, what should the new volume of the balloon be

Answers

Given:
A student decreases the temperature of a 556 cm^3 balloon from 278 K to 231 K at constant pressure
Required:
new volume of the balloon
Solution:
Apply Boyle's law
V1/T1 = V2/T2
(556 cm3) / (278K) = V2 / (231 K)
V2 = 462 cm3

A chemist wants to calculate the amount of heat that is absorbed by a sample of copper as it is melted. Which constant should she use?

Answers

She needs to use the heat of fusion (ΔH(fusion)) and the equation q=mΔH(fusion) or q=nΔH(fusion)  depending on whether or not ΔH(fusion) is given in J/g or J/mol.  The reason why temperature is absent from the equation is that temperature does not change at a phase change, only the enthalpy does.

I hope his helps.  Let me know in the comments if anything is unclear.

Answer:

Hfus

Explanation:

This is correct on edge.

A potassium atom (atomic number 19) and a bromine atom (atomic number 35) can form a chemical bond through a transfer of one electron. The potassium ion that forms has 18 electrons. What best describes the bromide ion that forms?

Answers

Answer:

C. It is a negative ion that has one more valence electron than a neutral bromine atom.

Explanation:

took test

It may have twice as much electrons a the potassium ion.

Viscosity is the tendency of a solid to melt to a liquid.

TRUE

FALSE

Answers

Answer:

False

Explanation:

The temperature at which solid changes into liquid is known as the melting point.

Energy is required for a solid to melt into a liquid.

However viscosity is known as  friction in liquids. It is the force that opposes movements in liquid. Viscosity causes liquids to be sticky. It is measured as a force per unit area.

As such, melting is the change from solid to liquid and not viscosity.

The answer is thus false.

 The statement about “Viscosity is the tendency of a solid to melt to a liquid” is false. It is melting not viscosity. Viscosity is the tendency of how the fluids flow.

What fluid flows very slowly?

Answers

Numerical modeling of coupled variably saturated fluid flow and reactive transport with fast and slow chemical reactions
Honey, at room temperature, has a higher viscosity and flows more slowly than water.
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