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VMariaS [17]
3 years ago
13

Determine the number of atoms of oxygen present in one mole of nitrogen dioxide?

Chemistry
1 answer:
ValentinkaMS [17]3 years ago
6 0
Di- means 2 so 1 mole of 2 has 2 oxygen atoms
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#2: A gas at unknown pressure and a volume of 66 cm has its pressure changed to 150 kPa. The new volume
Murljashka [212]

Answer:

<h2>377 kPa</h2>

Explanation:

The original pressure can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we're finding the original pressure

P_1 =  \frac{P_2V_2}{V_1}  \\

150 kPa = 150,000 Pa

We have

P_1 =  \frac{150000 \times 166}{66}  =  \frac{24900000}{66}  \\  = 377272.72...

We have the final answer as

<h3>377 kPa</h3>

Hope this helps you

7 0
3 years ago
How many molecules are in 189.5 grams of no2?
xz_007 [3.2K]
<span>NO2 weighs 46.005 grams per mol. There are 6.02x10^23 molecules in a mol. In the given sample of 189.5 grams, there are 4.12 mols. This means that there are 2.48x10^24 molecules of NO2 in the given sample.</span>
5 0
3 years ago
Solid carbon dioxide (CO2), also known as dry
Mademuasel [1]

Answer:

yes

Explanation:

yes because the ice changes forms physically and can be changed back. not 100% sure tho

4 0
3 years ago
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Someone help me am i right or wrong
steposvetlana [31]

Answer:

You right!

Explanation:

3 0
3 years ago
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A formula unit made with Na and unknown nonmetal "Z" has the formula, NaZ. Which element does "Z" represent?
vovangra [49]
The answer is chloride ig ‍♀️
6 0
3 years ago
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