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vredina [299]
3 years ago
13

Hydrogen gas can be produced in the laboratory by the reaction of magnesium metal with hydrochloric acid, according to the follo

wing equation:
Mg(s) + 2HCl(aq) --> MgCl2(aq) + H2(g)

a. How many grams of hydrogen can be produced when 4.00 g of HCl is added to 3.00 g of Mg?

b. Assuming STP, what is the volume of this hydrogen?
Chemistry
1 answer:
gulaghasi [49]3 years ago
7 0

Answer: 0.11 g H2

Explanation: just took test and got it right

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The mass of an element is 27 and it's atomic number is 13. Give the composition of the nucleus of it's atom.
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Answer:

nucleus consists of:

13 protons, 14 neutrons

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Which of the following is an example of an atom "following" the octet rule?
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Estimate the solubility of m(oh)2 in a solution buffered at ph = 7.0, 10.0, and 14.0.
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During reflux and distillation, how is it possible to lose the product?
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the radius of the Sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. Express
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Explanation;

Writing scientific notation :

  • Move the decimal to the left side until single digit of number remains before the decimal.
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Radius of the sun = 696,000.0 kilometer

1 km=10^3 m

Radius of the sun can also be written as = 6.96\times 10^{5} km=6.96\times 10^{5}\times 10^3 m=6.96\times 10^{8} meter

Size of bacterial cell = 1.9\times 10^{-4} millimeter

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Size of bacterial cell can also be written as = 1.9\times 10^{-4}\times 10^{-3} m=1.9\times 10^{-7} meter

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