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3 years ago

Which contains more molecules: 340g of NH3 or 90g of H2O show your working!!

Chemistry

2 answers:

elena-14-01-66 [18.8K]3 years ago

8 0

Answer:

Explanation:

The atomic weight of H2O is 18, 18g of water is 1 mole of H2O. 1 mole of any substance contains 6.023 x 10 23 number of atoms. The atomic weight of NH3 is 17 so 17g of NH3 contains 6.023 x 10 23 atoms. 340g of NH3 contains 20 moles of NH3.

90g of H2O is 5 moles of H2O, so there are 4 times as many molecules of NH3 as there are molecules of H2O.

The answer is NH3

Hope this helps

Shtirlitz [24]3 years ago

6 0

Answer:

atomic mass ( N =14 , H = 1×3 that means 14+3=17

340gram×17gram / mole

=5780mole

atomic mass ( H= 1×2 ,O= 16 =16+2 =18

90gram×18gram /mole

=1620mole

I think 340g ammonia (NH3)

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stich3 [128]

Answer:

Value of $Q_{p}$ for the given redox reaction is $1.0\times 10^{-8}$

Explanation:

Redox reaction with states of species:

$14H^{+}(aq.)+Cr_{2}O_{7}^{2-}(aq.)+6Cl^{-}(aq.)\rightarrow 2Cr^{3+}(aq.)+3Cl_{2}(g)+7H_{2}O(l)$

Reaction quotient for this redox reaction:

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So, $[H^{+}]=10^{-pH}$

Plug in all the given values in the equation of $Q_{p}$ :

$Q_{p}=\frac{(0.10)^{2}\times (0.010)^{3}}{(10^{-0.0})^{14}\times (1.0)\times (1.0)^{6}}=1.0\times 10^{-8}$

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3 years ago

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Whitepunk [10]

Answer:

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2 years ago

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lapo4ka [179]

Answer:

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Explanation:

Process:

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3 years ago

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