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)

What does it mean to say that a quantity is conserved

What is the pressure exerted by 0.801 mol of co2 in a 12 l container?

A football kicker kicks a ball with a mass of. 42 kg. The average acceleration of the football was 14.8 m/s squared. How much force did the kicker supply to the football?

A mass of gas has a volume of 4 m3, a temperature of 290 K, and an absolute pressure of 475 kPa. When the gas is allowed to expand to 6.5 m3, its new temperature is 277 K. What's the absolute pressure of the gas after expansion? A. 104.1 kPa B. 279.

Could tests be performed to support the clamim?

A plane is flying east at 135 m/s. The wind accelerates it at 2.18 m/s^2 directly northeast. After 18.0s, what is the magnitude of the displacement of the plane?

The same constant force, F, is applied to two blocks. The first block has a mass of M and the second block has a mass of 2M. Both blocks are initially at rest and the force acts on each of them for the same period of time, t.

Which of the following is an example of the strong nuclear force acting in an atom? A. A proton repelling a proton B. A neutron attracting a neutron C. A neutron repelling an electron D. An electron attracting a proton

Does the air in our atmosphere have mass?

Your instructor hands you a closed flask partly filled with room-temperature water. When you hold it, the heat transfer between your bare hands and the flask causes the water to boil. Quite impressive! How is this accomplished?