Which one of the following is a decomposition reaction?

A. 2H2O (l) → 2H2 (g) + O2 (g)

B. N2 (g) + 3H2 (g) → 2NH3 (g)

C. CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)

D. 2H2 (g) + O2 (g) → 2H2O (g)

Explain why energy is necessary to chemical reactions, and describe some common sources of energy.

The perceived forces between chlorine gas molecules that contribute to non ideal behavior are most strongly influenced by

The liquid mercury in a thermometer expands as it is heated. this is a ... change of state. change of form. chemical change. physical change.

If this 1300 kg car is driven at 27 m/s through the bottom of a circular dip in the road that has a radius of 600 m, by how much do these springs compress compared to when the car is driven on a flat road

In order of decreasing light-transmitting capabilities of materials, which is correct sequence?

Which of the following is an example of a velocity? O A. 12 m/s O B. 45 km/hr south O C. 55 km/hr D. - 5 m/s2 east

What was the total weight (lbf) of chocolate in the vat? the specific gravity of chocolate is approximately 1.24?

You are in the lab and are given two rods set up so that the top rod is directly above the bottom one. The two straight rods 50-cm long are separated by a distance of 1.5-mm each with 15 A of current passing through them.

What is the explanation for feather beds being warm

A student wearing frictionless in-line skates on a horizontal surface is pushed by a friend with a constant force of 47 N. How far must the student be pushed, starting from rest, so that her final kinetic energy is 354 J?