Plant cells undergo a process called photosynthesis, which uses sunlight to make sugar. Which need does photosynthesis fulfill for plants?

An atom has 5 protons and 7 neutrons. What is its mass number of amu?

What chemical substance is used to power cellular activities?

The ideal gas constant, R has several different values that could be used. Which quantity causes these differences? pressure temperature volume moles

Describe an ideal gas. Explain why it is impossible for an ideal gas to exist.

You carefully drop a stone into a beaker full of water. The stone sinks to the bottom and water spills out. What can you say about the weight of the displaced water

A student mixes 0.50 L of 0.0020 M Ba (NO3) 2 solution with 0.50 L of 0.0080 M Na2SO4 solution. Which equation shows the proper set-up to calculate molar concentration of Ba2 + ions in the new solution? (0.0020 M) (1 L) = (? M) (0.0020 M) (0.

What is the minimum number of carbon atoms a ketone may contain

The gas-phase decomposition of NOBr has a k = 0.810 M-1 s-1 at 10°C. NOBr (g) → NO (g) + ½ Br2 (g) rate = k[NOBr]2 We start with 0.00200 M NOBr in a flask at 10°C. (a) How many minutes does it take to use up 0.

What new scientific evidence led to changes in Dalton's atomic theory?

What other property do metal share