Ask question

Ask question

All categories

3 years ago

11

When a surface is experiencing friction with another surface, how are the particles

1 answer:

Free_Kalibri [48]3 years ago

6 0

Answer:

the surface may become etheir scratchy and soft and that the surface may also be come heated up due to friction

You might be interested in

Which of the following is not an indication of a chemical reaction?

lakkis [162]

A substance freezes.

8 0

3 years ago

Read 2 more answers

Examine the nuclear reaction: 1 1 H+ 1 0 n -> 2 1 H.

Lera25 [3.4K]

1) Conversion of an isotope one chemical element or an isotope into another chemical element is called as nuclear transmutation.
<span>
2) In a nuclear transmutation reactions</span> can be achieved either due to radioactive decay or due to nuclear reactions.

3) In this technique, it is possible to convert a stable element into radioactive atom by bombarding in with high speed particles. The initial stable nuclei is referred as parent nuclei, the fast moving particle is referred as projectile while new element which is formed is called as daughter element.

4) In the present reaction:
<span>1 1 H+ 1 0 n -> 2 1 H
1 1H is a parent nuclei which is bombarded with the fast moving projectile
(1 0 n) to generate a new daughter nuclei (2 1H). </span>

6 0

3 years ago

What percent of the earth's surface does the ocean cover? 37% 75% 78% 82%

kiruha [24]

About 75% of earth’s surface is covered by the ocean

4 0

3 years ago

Read 2 more answers

Which graph shows the pressure-temperature relationship for a gas at a fixed volume?

marin [14]

Answer:

The answer is

C. Graph A

5 0

3 years ago

Read 2 more answers

what is the mole fraction of neon in a mixture that contains 0.628 g of helium, 11.491 g of neon, and 7.613 g of argon?

VMariaS [17]

Answer:

0.2

Explanation:

Given parameters:

Mass of helium = 0.628g

Mass of neon = 11.491g

Mass of argon = 7.613g

Unknown:

Mole fraction of neon = ?

Solution:

The mole fraction of an element is the number of moles of that element to the total number of moles in the gas mixture.

We need to calculate the number of moles of each element first;

Number of moles = $\frac{mass}{molar mass}$

Molar mass of Helium = 4g/mol

Molar mass of Neon = 20g/mol

Molar mass of Argon = 40g/mol

Number of moles of He = $\frac{0.628}{4}$ = 0.16moles

Number of moles of Ne = $\frac{11.491}{20}$ = 0.58moles

Number of moles of Ar = $\frac{7.613}{40}$ = 0.19moles

Total number of moles = 0.16moles + 0.58moles + 0.19moles = 0.93moles

Mole fraction Neon = $\frac{0.19}{0.93}$ = 0.2

4 0

3 years ago