All categories

3 years ago

Could someone help? I dont understand it.

Chemistry

1 answer:

otez555 [7]3 years ago

4 0

Answer:

I think its radiant energy.

Explanation:

You might be interested in

When water is placed in a thin glass tube, it tends to climb up the walls of the tube. This effect is known as capillary action.

alexandr402 [8]

Answer:

The answer is D. hydrogen bonding

3 0

4 years ago

The gas in an engine cylinder is compressed until it has a volume of 0.045 liter and an absolute pressure of 28 atmospheres. If

Hatshy [7]

$7.7 \times 10^{2} \; \text{K}$ .

<h3>Explanation</h3>

Units of each quantity:

<em>P</em> = 28 atm;
<em>V</em> = 0.045 L;
<em>n</em> = 0.020 mol;

Ideal gas constant:

$R = 0.0820573 \;\text{L} \cdot \text{atm} \cdot \text{K}^{-1} \cdot \text{mol}^{-1}$ .

Apply the ideal gas law:

$T = \dfrac{P \cdot V}{n \cdot R} = \dfrac{{\bf 28} \; \text{atm} \times {\bf 0.045} \;\text{L} }{{\bf 0.020}\; \text{mol} \times {\bf 0.0820573} \;\text{L} \cdot \text{atm} \cdot \text{K}^{-1} \cdot \text{mol}^{-1}} = {\bf 767.76} \; \text{K}$ .

All data given in this question come with two significant figures. Round the value of <em>T</em> to two significant figures:

$T = 767.76 \;\text{K} = 7.7 \times 10^{2} \; \text{K}$ .

7 0

3 years ago

Read 2 more answers

Description (with words) of water just above melting temperature. What intermolecular forces do you expect to find in water in l

slava [35]

Answer:

intermolecular dipole-dipole hydrogen bonds

Explanation:

Water is a polar molecule. Recall that the central atom in water is oxygen. The molecule is bent, hence it has an overall dipole moment directed towards the oxygen atom. Since it has a permanent dipole moment, we expect that it will show dipole-dipole interactions in the liquid state.

Similarly, water contains hydrogen and oxygen. Recall that hydrogen bonds are formed when hydrogen is covalently bonded to highly electronegative elements. Hence, water in the liquid state exhibits strong hydrogen bonding. The unique type of dipole-dipole interaction in liquid water is actually hydrogen bonding, hence the answer.

6 0

3 years ago

Which of these is an example of an abiotic factor?

dolphi86 [110]

What are the choices? I'll answer once you tell me those

8 0

3 years ago

2. Which of the following are reactants of photosynthesis? *

natali 33 [55]

Answer:

A is the answer.

4 0

3 years ago

Read 2 more answers