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Ierofanga [76]
3 years ago
13

How many grams of hydrogen has will be produced from the reaction of zinc metal with 85 grams of hydrochloric acid?

Chemistry
1 answer:
eduard3 years ago
7 0

Answer:

2.4 grams of H

Explanation:

Zn+2HCl=ZnCl2+H2

85gHCl x 1 mol HCl/36.458 g HCl x 1 mol H/2 mol HCl x 2.016 g H/1 mol H = 2.4 g H. (I know this is kinda hard to read, but I had the same question for my test and this is what I did to get 2.4. I hoped this helped)

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The equations ? It’s for a chemistry class, and he said we need to explain and write down the math problems?
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Answer:

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The experimental apparatus represented above is used to demonstrate the rates at which gases diffuse. When the cotton balls are
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3 years ago
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butalik [34]
According to the law of conservation of mass, the mass of reactants will be equal to the mass of the products. The mass of products and reactants will only differ during a nuckear reaction
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3 years ago
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If the pressure of a gas is 1.01 atm and the temperature is 25°C, then if the pressure is increased to 1.10, what is the new tem
vodka [1.7K]

Answer:

T2 = 51.6°C

Explanation:

Given:

P1 = 1.01 atm

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P1/T1 = P2/T2

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= (1.10 atm/1.01 atm)(298K)

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3 0
3 years ago
134 grams of nitric acid is added to 512 grams of water. Calculate the molality of nitric acid.
Nana76 [90]

Answer:   4.15234 m

512 g H2O * \frac{1 kg}{1000 g} = 0.512 kg H2O

Nitric Acid:  HNO3 = 1.008 + 14.007 + 3(15.999) = 63.012 g/mol

H = 1.008 g/mol

N = 14.007 g/mol

O3 = 3*15.999

134 g HNO₃ * \frac{mol}{63.012 g} = 2.126 mol

m = \frac{2.126  mol}{0.512  kg} = 4.15234 m

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3 years ago
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