When you mixed 20 grams of magnesium and an excess of nitric acid, 1.7 grams of hydrogen was actually produced. What is the percent yield of hydrogen during this reaction?

Mg + 2HNO3 Mg (NO3) 2 + H2

3.3 %

48.5 %

25.7 %

102 %

98 %

How might a titration be different if a. 1m base solution that produces 2 moles of hydroxide g?

If 3.5 g H2 react with 18.7 g O2 what is the limiting reactant?

What is the source of energy in most ecosystems? animals plants oxygen sunlight

Why is it difficult to construct a practical calendar based on the moons cycle of phase

Determine what forces are present in this situation : an elevator is rising at a constant speed; the elevator is the object in this situation. a) gravity and tension b) normal and tension c) normal, gravity, tension d) gravity

a ballon is filled with 35.0 f of helum in the moring when the twmoerature is 68 f. by noon the temperature has risen to 13 f. what is the new volume of the baloon

What happens to the mass if the volume is tripled? A: it is also tripled B: it doesnt change C: it is reduced to 1/3

1. A student calculated the theoretical yield of BaSO4 (s) in a precipitation experiment to be 1.352 grams. When she filtered, dried, and weighed her precipitate, however, her actual yield was only 1.279 grams. Calculate the student's percent yield.

What is a fan-shaped feature at the mouth of a river

How many moles of mgbr2 are there in 118.0 g of that compound?