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3 years ago

Please help me! I am a bit stuck on this.

Chemistry

2 answers:

Mnenie [13.5K]3 years ago

5 0

Answer:

option 2 is the answer

Explanation:

it is right dear

alexandr402 [8]3 years ago

4 0

Option 2 is the correct answer

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4 years ago

What kind of reaction is shown below?

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4 years ago

6. Find the number of centimeters in 1.00 x 102 yards. (1 yd = 3 ft, 1 ft = 12 in, 2.54 cm = 1

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4 years ago

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3 years ago

Read 2 more answers

what is the total mass of water formed when 8 grams of hydrogen completely reacts with 64 grams oxygen

Daniel [21]

Question: Given the balanced equation representing a reaction:

2H2 + O2 ==>2H2O

What is the total mass of water formed when 8 grams of hydrogen reacts completely with 64 grams of oxygen?

(1) 18 g (3) 56 g

(2) 36 g (4) 72 g

Answer:

"72 gram" is the total mass of water formed when 8 grams of hydrogen reacts completely with 64 grams of oxygen

Explanation:

We will do stoichiometry in this kind of problem:

$8g of H_2O\times(\frac{1molO_2}{2.0g H_2})(\frac{2 mol H_2O}{2mol H_2})(\frac{18g H_2O}{1molH_2O}) = 72g H_2O$

$64 g O_2 \times (\frac{1molO_2}{32g O_2})(\frac{2 mol H_2O}{1mol O_2})(\frac{16gH_2O}{1 mol H_2O}) = 72g H_2O$

Therefore, the total mass of water formed is 72 g.

7 0

3 years ago