Chemistry, 17.03.2020 20:12 scottmn

Calculate the mass of hydrogen formed when 27 g of aluminum reacts with excess hydrochloric acid according to the balanced equation: 2 Al + 6 HCl → 2 AlCl₃ + 3 H₂

Answers: 2

Show answers

Answers

Answer from: zalayjahan4793

The mass of hydrogen formed when 27 g of aluminum, Al reacts with excess hydrochloric acid, HCl is 3 g

We'll begin by calculating the mass of Al that reacted and the mass of H₂ formed from the balanced equation. This can be obtained as follow:

2Al + 6HCl → 2AlCl₃ + 3H₂

Molar mass of Al = 27 g/mol

Mass of Al from the balanced equation = 2 × 27 = 54 g

Molar mass of H₂ = 2 × 1 = 2 g/mol

Mass of H₂ from the balanced equation = 3 × 2 = 6 g

SUMMARY

From the balanced equation above,

54 g of Al reacted to produce 6 g of H₂.

Finally, we shall determine the mass of H₂ produced by the reaction of 27 g of Al. This can be obtained as follow:

From the balanced equation above,

54 g of Al reacted to produce 6 g of H₂.

Therefore,

27 g of Al will react to produce = $\frac{27 * 6}{54} \\\\$ = 3 g of H₂.

Thus, the mass of H₂ produced from the reaction is 3 g

Learn more: link

Answer from: Agatio

6.069 grams is the mass of hydrogen formed when 27 g of aluminum reacts with excess hydrochloric acid.

Explanation:

Balanced equation for the reaction:

2 Al + 6 HCl → 2 AlCl₃ + 3 H₂

data given:

mass of aluminum = 27 grams

atomic mass of one mole of aluminum = 26.89 grams/mole

formula to calculate number of moles:

number of moles = $\frac{mass}{atomic mass of one mole}$

number of moles = $\frac{27}{26.89}$

= 1.004 moles of aluminum will react

from the balanced equation:

2 moles of Al reacted to form 3 moles of H2

1.004 moles of Al will produce x moles of H2

$\frac{3}{2}$ = $\frac{x}{1.004}$

x = 3.012 moles of H2 will be formed.

mass will be calculated as number of moles multiplied by atomic weight

mass of 3.012 moles of hydrogen ?(atomic weight of one mole H2 = 2.015 grams)

= 3.012 x 2.015

= 6.069 grams of H2 will be formed.

Answer from: Quest

h let me think

Answer from: Quest

- decrease the number of plants and animals living in the water.

Another question on Chemistry

Chemistry, 22.06.2019 15:30

Count the number of each type of atom in the equation below, and then balance the equation. write in the numbers of atoms and coefficients. add a 1 if there should be no coefficient. cs2(l) + o2(g) → co2(g) + so2(g) c [ ] s [ ] o > c [ ] s [ ] o [ ] cs2(l) + [ ] o2(g) > [ ] co2(g) + [ ] so2(g)

Answers: 3

Answer

Chemistry, 22.06.2019 18:00

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

Answers: 1

Answer

Chemistry, 22.06.2019 22:30

Write and balance the chemical equation that represents the reaction of aqueous sulfuric acid with aqueous sodium hydroxide to form water and sodium sulfate. include phases.

Answers: 1

Answer

Chemistry, 22.06.2019 22:30

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.

Answers: 1

Answer

You know the right answer?

Calculate the mass of hydrogen formed when 27 g of aluminum reacts with excess hydrochloric acid acc...

Questions