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bulgar [2K]
3 years ago
10

All living things have four basic needs to live and function. List these four needs.

Chemistry
2 answers:
san4es73 [151]3 years ago
5 0
I believe the answer is Air, Water, Food, And shelter, hope it helps!
mote1985 [20]3 years ago
3 0

Water, food, shelter, oxygen, a steady temperature.

here's five, just pick 4, good luck :)

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calculate the mass of 120cc nitrogen present at STP. how many number of molecules are present in it?​
Stells [14]

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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3 years ago
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