Hydrogen gas can be prepared by reacting metallic sodium with water: 2Na (s) + 2H2O (l) → H2 (g) + 2NaOH (aq). If the price of sodium were 165/kg, what would be the cost of producing 1.00 mol of hydrogen. Ignore the cost of the water.

Consider the following reaction and its equilibrium constant: 4 CuO (s) + CH4 (g) ⇌ CO2 (g) + 4 Cu (s) + 2 H2O (g) Kc = 1.10. A reaction mixture contains 0.22 M CH4, 0.70 M CO2 and 1.5 M H2O.

A gas sample has a volume of 125 ml at 91.0 KPa. What will its volume be at 101 KPa?

A vacationer floats lazily in the ocean with 89% of his body below the surface. The density of the ocean water is 1025 kg/m3. What is the vacationer's average density?

Liquid nitrogen is used for: electrosurgery cryosurgery laser surgery

Which statement is not true about the field of science? It is based on observations and explanations of the natural world. It is based on rational thinking, inquiry, and experimentation.

The nucleus of an atom holds 4 neutrons and 4 protons, how many electrons does it have

What types of atoms are in nh3 or ammonia how many hydrogen and how many nitrogen

A piece of wood near a fire is at 23°C. It gains 1,160 joules of heat from the fire and reaches a temperature of 42°C. The specific heat capacity of wood is 1.716 joules/gram degree Celsius. What is the mass of the piece of wood? ОА. 16 g OB.

Which of the following is a viable possibility for a liquid particle that loses energy? (select all that apply) the liquid particle may become a gas particle the liquid particle may become a solid particle the liquid particle may become a slower

What is true of the bottom layer of the ocean? Select the two correct answers. A. It has the largest plants. B. It has the lowest salinity. C. It has the greatest density. D. It has the coldest water. E. It has the most sunlight.