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disa [49]
3 years ago
6

When a sample of CO2 solid becomes CO2 gas there is a change in

Chemistry
1 answer:
notka56 [123]3 years ago
5 0

Volume and state of matter

Explanation:

When sample solid change to gas, there is a phase change known as sublimation.

We can conclude that the state of matter has changed from solid to gases.

There is an increase in entropy and the particles becomes more random.

There is little to no force of attraction between the particles.

There is also a volume change because gases have no fixed shape. They just fill containers that holds them.

The mass of the gases will remain the same as that of the solid carbon dioxide. Mass is a function of the particles in compound.

We can also agree that the kinetic energy has increased considerably.

Learn more:

Phase change brainly.com/question/1875234

#learnwithBrainly

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How many moles of oxygen gas (O2) are required to completely react with 10 moles of hydrogen gas (H2)?
Brums [2.3K]

Answer:

5 moles of oxygen are required.

Explanation:

Given data:

Moles of O₂ required = ?

Moles of H₂ present = 10 mol

Solution:

Chemical equation:

O₂ + 2H₂       →     2H₂O

Now we will compare the moles of oxygen and hydrogen.

                      H₂        :        O₂

                        2         :         1

                       10         :     1/2×10 = 5 mol

5 moles of oxygen are required.

3 0
3 years ago
A radioactive nucleus emits a beta particle, then the parent and daughter nuclei are
Nana76 [90]

Answer:

isobars

Explanation:

How?

  • A radioactive nucleus emits beta particle(Like uranium,radium)
  • So the mass numbers are same for daughter nuclei .
  • They have different atomic numbes .

So they are isobars

3 0
3 years ago
Read 2 more answers
Help me. please help me.
igor_vitrenko [27]
B- 90 grams bc 45 mL times 2 equals 90
3 0
3 years ago
Mr. Chem S. Tree added water to 250. ML of a 2.50 M NaOH solution, until the final volume was 500. ML. What is the new molarity
tresset_1 [31]

Answer:

molarity of diluted solution = 1.25 M

Explanation:

Using,          

C1V1 (Stock solution) = C2V2 (dilute solution)

given that

C1 = 2.50M

V1 = 250ML

C2 = ?

V2 = 500ML

2.50 M x 250 mL = C2 x 500 mL

C2 = (2.50 M x 250 mL) / 500 mL

C2 = 1.25 M

Hence, molarity of diluted solution = 1.25 M

4 0
3 years ago
WILL MARK BRAINLIEST IF YOU ANSWER WITHIN 5 MINUTES
tensa zangetsu [6.8K]

Answer:

This is and ADDITION REACTION

Explanation:

Because your putting a compound and an element together

6 0
3 years ago
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