Chemistry, 12.02.2020 04:42 gabrielbergemancat

Consider the reaction

H2(g) + 1 2 O2(g) → H2O(ℓ) + 286 kJ

How much H2 would have to be burned to yield America’s daily energy share of 260,000 kcal? (1 cal = 4.184 J)

1.) 1900 mol

2.) 3800 mol

3.) 7600 mol

4.) 1 mol

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 04:30, anthony4034

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Answers: 1

continue

Chemistry, 22.06.2019 06:00, nikejose11

An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g

Answers: 3

continue

Chemistry, 22.06.2019 06:30, backup5485

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Answers: 1

continue

Chemistry, 22.06.2019 08:30, microwave13016

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Answers: 1

continue

You know the right answer?

Consider the reaction

H2(g) + 1 2 O2(g) → H2O(ℓ) + 286 kJ

How much H2 would...