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Nat2105 [25]
4 years ago
15

Someone help me i don’t understand it

Chemistry
1 answer:
Troyanec [42]4 years ago
3 0
Use PV=nRT to help you
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BRAINLIEST ANSWER _ A balloon occupies a volume of 0.93 liters at a pressure of 84.5 kPa. When the balloon is allowed to expand
SVEN [57.7K]
V1 = 2.0 L T1 = 25.0 oC = 298 K V2 = V1T2 = (2.0 L)(244 K) = 1.6 L V2 = ? t1(298 K) T2 = –28.9 oC = 244 K
 
5 0
4 years ago
A chemist has 3.55x1022 molecules of nitrogen monoxide. How
Alina [70]

Answer:

<h2>0.059 moles</h2>

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{3.55 \times  {10}^{22} }{6.02 \times  {10}^{23} }  \\  = 0.05897...

We have the final answer as

<h3>0.059 moles</h3>

Hope this helps you

6 0
3 years ago
What is the result of multiplying
vlabodo [156]

Answer:

i believe it's C

Explanation:

the result of multiplying (2.5 * 1010) and (3.5 x 10-7) is 8.8.10^3

5 0
2 years ago
What is the charge of Fe(OH)3?
klasskru [66]
The charge for this compound is positive. For Fe, it's charge is positive 3, and for OH, it's charge is negative 1. You would then criss cross the charges of each and come out with Fe(OH)3. I hope this helped!! :)
6 0
3 years ago
Are the answers correct? if not please help fix them
Serggg [28]

Answer:

Looks like they're all right

8 0
3 years ago
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