In the following chemical reaction, how many moles of n2 are needed to completely react with 3 moles of h2? n2 3 h2 2 nh3

a. 2

b. 3

c. 6

d. 7

8 oz bottle of Dr. Pepper made with imperial cane sugar (C12H22O11) contains 27 g of sugar in 236.6 mL of water. What is the molarity of the solution with respect to cane sugar?

Consider the synthesis of ammonia 3 H2 + N2 à 2 NH3 If a student were to react 38.5 g of nitrogen gas, how many moles of ammonia would be produced?

How much work is accomplished when a force of 300 N pushes a box across the floor for a distance of 100 meters? a, 300 J b, 30,000 J c, 30,000 N d, 300 N

A breathing mixture used by deep-sea divers contains helium, oxygen, and carbon dioxide. What is the partial pressure of oxygen at 101.4kPa if P (He) = 68.7kPa and P (CO2) = 1.4kPa?

What mass of octane must be burned in order to liberate 5270 kj of heat? δhcomb = - 5471 kj/mol?

A student has a solution with a pH of 7. The student adds HF, hydrogen floride, to the solution, hoping to increases the pH of the solution. What is wrong with this student's approach? Select one: A. You cannot change the pH of a solution. B.

What is more likely to happen if wetlands are drained?

A) If you weigh a hydrated compound before and after heating it. Do you expect the mass to be more or less than before heating? Explain why. b) How about if you weigh a bag of popcorn before and after heating it.

Define the term relative molecular mass

It took many of the metals several minutes to begin to react. Once the reaction was initiated, several of these metals continued to react quite vigorously.