👤
Answered

How many moles of Hydrogen gas will be produced if you start with 2.5 moles of Magnesium and an excess of Hydrochloric Acid given the following balanced chemical reaction:

Mg + 2HCl → MgCl2 + H2

Group of answer choices

A. 1.25 moles

B. 5.0 Moles

C. 7.5 moles

D. 2.5 moles

Answer :

CrystalQueengo

Answer:

D.) 2.5 moles

Explanation:

To find the moles of Hâ‚‚, you need to multiply the given value by the mole-to-mole ratio. This ratio consists of the coefficients in front of the relevant molecules. It is important to arrange the ratio in a way that allows for the cancellation of units.

1 Mg + 2 HCl -----> MgClâ‚‚ + 1 Hâ‚‚
^                                            ^

2.5 moles Mg            1 moles Hâ‚‚
-----------------------  x  ---------------------  =  2.5 moles Hâ‚‚
                                   1 mole Mg

Go Teaching: Other Questions