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ch4aika [34]
3 years ago
5

What is the answer to this ?

Chemistry
1 answer:
Alexxandr [17]3 years ago
7 0

Answer:

12.78 or 12.80 mostly like 12.78

Explanation:

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3 years ago
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3 years ago
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6 0
3 years ago
How many moles are in 54.0 grams of Silver?
Lelechka [254]
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4 0
3 years ago
If 3.289 x 10^23 atoms of potassium react with excess water, how many grams of hydrogen gas would be produced?
GarryVolchara [31]

Answer:

The amount in grams of hydrogen gas produced is 0.551 grams

Explanation:

The parameters given are;

Number of atoms of potassium, aₙ = 3.289 × 10²³ atoms

Chemical equation for the reaction is given as follows;

2K + 2H₂O \rightarrow KOH + H₂

Avogadro's number, N_A, regarding the number of molecules or atom per mole is given s follows;

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Therefore;

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The molar mass of hydrogen gas = 2.016 grams

Therefore, 0.273 moles will have a mass of 0.273×2.016 = 0.551 grams.

The amount in grams of hydrogen gas produced = 0.551 grams.

8 0
3 years ago
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