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Sophie [7]
2 years ago
11

According to the kinetic theory, what is the kinetic energy of a gas molecule proportional to?

Chemistry
1 answer:
masya89 [10]2 years ago
6 0
C. temperature of the gas
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Write a balanced equilibrium equation for the dissolution of nai in water. include phases.
Bess [88]
Dissolution means to make the compound apart, So when we have ionic compounds like NaI which has metal and non-metal ions, It separates into parts of positive ions and negative ions. After we separate this compound apart we will put the charge of each on above its symbol and then start to balance the equation of the dissolution.

So the dissolution equation of NaI is:
NaI(s) → Na^+(s)  +   I^-(Aqu) 
3 0
3 years ago
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Which of these is not a characteristic of a renewable resource? Question 1 options: Used up faster than they are able to be repl
klemol [59]

Answer:

can be replaced in a short amount of time

Explanation:

done

7 0
3 years ago
(Atomic masses used are C = 12.0 g mol–1, O = 16.0 g mol–1, H = 1.01 g mol–1, Cu = 63.5 g mol–1,)
alex41 [277]

<u>Question 1</u>

The formula mass of methanol is 12.0+3(1.01)+16.0+1.01=32.04 g/mol.

Therefore, in 5.0 grams of methanol, there are 5.0/32.04=\boxed{0.16} moles.

<u />

<u>Question 2</u>

The formula mass of copper(II) carbonate is 63.5+12.0+3(16.0)=123.5 g/mol.

This means that in 9.0 grams of copper(II) carbonate, there are 9.0/123.5=0.072874493927126 moles.

Using Avogradro's number, there are (0.072874493927126)(6.022 \times 10^{23})=\boxed{4.4 \times 10^{22}} molecules.

<u>Question 3</u>

The formula mass of cyclohexane is 12.0(6)+1.01(12)=84.12 g/mol.

So, 3.0 grams of cyclohexane is the same as 3.0/84.12=\boxed{0.036} moles.

<u>Question 4</u>

The formula mass of benzene is 12.0(6)+1.01(6)=78.06 g/mol.

This means that 4.00 moles of benzene has a mass of (78.06)(4.00)=\boxed{312} grams.

<u>Question 5</u>

1000 atoms of calcium is the same as \frac{1.000}{6.022 \times 10^{23}} moles.

This is equal to \frac{1000}{6.022 \times 10^{23}} \cdot 40.078=\boxed{6.7 \times 10^{-20}} grams.

6 0
1 year ago
Remodeling a kitchen to add additional cabinets to existing ones also means adding extra support. In a similar respect, bone rem
krok68 [10]

Answer:

Calcium (Ca²⁺)

Explanation:

Calcium is very important mineral, found in teeth and bones primarily.

It is needed for the strong bones.

It is very important to maintain the bones in order to support our skeleton.

In our body it is also important to carry out other functions like in muscles, nerve function and also for heart.

If our diet is not full of calcium, the calcium deficiency may occur which leads to the weakening of bones and cause fracture.

The dietary source of calcium includes:

Yogurt, cheese, milk

beans such as peas, peanuts.

fishes

almonds, oranges, molasses

5 0
3 years ago
Changing the number of protons in an atom makes<br><br> A. an ion<br> B. an isotope
lana [24]
A. an ion

The atom gains a net electrical charge if the number of protons and electrons are not equal which makes it an ion.
5 0
3 years ago
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