What are some ideas for a compound machine for my middle school invention science project that can be useful in people's daily lives? I need a explanation of why it's important.

The Haber process produces ammonia commercially. It is represented by the equation N2 (g) 3H2 (g) - -> 2NH3 (g) To completely convert 9.0 mol hydrogen gas to ammonia gas, how many moles of nitrogen are required

How many moles of nitrogen gas are in a 10.0 L container at STP? a. 0.45 moles b. 22.4 moles c. 10.0 moles d. 6.02 x 1023 moles

Consider the reaction S2Cl2 (l) + CCl4 (l) - -> CS2 (g) + 3Cl2 (g); DH° = 84.3 kJ If the above reactants and products are contained in a closed vessel and the reaction system is at equilibrium, the number of moles of CS2 can be increased by A)

What is the bond polarity of NBr3

Calculate the volume of 1 M NaOH needed to prepare 10.0 ml of a 0.10 M solution.

Suppose the average concentration of copper in water is measured to be 2.5 x 10" M. a. Express this concentration in mg/L. b. Express this concentration in ug/L. c.

If I add water to oil what will happen

Commercial fertilizers, which are made by humans, are used to enrich soil for healthier crops. However, erosion may carry the fertilizer chemicals to the oceans. The presence of these chemicals may cause certain kinds of algae to reproduce rapidly.

A cube of iron has a temperature of 35°C. It is placed on top of a hot surface with a temperature of 175°C. What will happen to the iron? A) Its temperature will decrease. B) Heat will flow from the hot surface into the iron.

Density differences cause the