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Oksi-84 [34.3K]
3 years ago
5

If mixture didn't exist how would life be different​PLEASEEE QUICKKKK

Chemistry
1 answer:
Nataliya [291]3 years ago
8 0

Answer:

boring

Explanation:

without meaning

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calculate the mass of 120cc nitrogen present at STP. how many number of molecules are present in it?​
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Answer:

0.15008\ \text{g}

3.23\times 10^{21}

Explanation:

1 mol of nitrogen at STP = 22.4 L = 22400 cc

n = Mol of N_2 = \dfrac{120}{22400}=0.00536\ \text{mol}

M = Molar mass of N_2 = 28\ \text{g/mol}

N_A = Avogadro's number = 6.022\times 10^{23}\ \text{mol}^{-1}

Mass of N_2 is

m=nM\\\Rightarrow m=0.00536\times 28\\\Rightarrow m=0.15008\ \text{g}

Mass of the nitrogen is 0.15008\ \text{g}

Number of molecules is given by

nN_A=0.00536\times 6.022\times 10^{23}=3.23\times 10^{21}\ \text{molecules}

The number of molecules present in it are 3.23\times 10^{21}

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Which type of reaction is occurring during a fireworks show? How do you know?
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