2 years ago

If a quantity of this substance existed as a solid at a pressure of 0.75 atm and a temperature of 50°C, what phase

Chemistry

1 answer:

Alinara [238K]2 years ago

5 0

Possibly d or could be a

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At what temperature does a gas at 1.00 atm and 20 degree Celsius have a pressure of 4.00 atm.

vfiekz [6]

Answer:

P1 =4 atm

T1= 20°C

P2=1 atm

T2=?

According to Gay-Lussac's Law or Third Gas Law,

P1T2=P2T1

4×T2=1×20

T2= 20/4

T2= 5°C

Answer At 5°C temperature does a gas at 1.00 atm !

7 0

3 years ago

Define mass number of an atom.

Georgia [21]

The mass number of an atom is basically the total number of protons and neutrons.

6 0

2 years ago

Which term best describes what Donna observed?<br> A:dew<br> B:fog<br> C:mist <br> D:rain

MariettaO [177]

I also think it’s B but not quite sure

6 0

3 years ago

what type of bond requires the give and take of electrons? a. ionic b. polar disalent c. polar covalent d. nonpolar covalent

Effectus [21]

Ionic bond involves electrostatic attraction between oppositely charged ions.
The ions are atoms that have gained 1 or more electrons and atoms that have lost 1 or more electrons.
Answer: The type of bond that requires the give and take of electrons is
A ) ionic bond.

3 0

3 years ago

How many moles are equal to 1.3 x 1024 atoms of aluminum?

marshall27 [118]

Answer:

<h3>The answer is 2.16 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{1.3 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 2.159468...$

We have the final answer as

<h3>2.16 moles</h3>

Hope this helps you

8 0

2 years ago