N a neutral calcium atom, there are 20 protons, 20 neutrons, and 20 electrons. If a calcium atom loses 2 electrons, what would be the calcium's atom's charge?

How many moles of co2 can be produced by the reaction of 1.53 g lithium carbonate?

If you need to find the number of moles of air in a scuba tank filled to a pressure of 22,000 kPa at 295K, and the volume of the tank is 30 L, which equation would you use?

What is the standard unit of frequency

How many moles of N2 is 224 L of N2?

An elements shows the number of protons in its nucleus

The energy of a particular color of green light is 3.81*10-22 kJ/photon. The wavelength of this light is nanometers

How many molecules are in. 25 mole of O2

A flexible container is filled with 960.0 liters of air at 38 degrees Celsius. If pressure in the container does not change, at what temperature will the container have at a volume of 350.0 liters?

Which subatomic particles are paired with their charges? 1. electron-positive, neutron-negative, proton-neutral 2. electron-negative, neutron-neutral, proton-positive 3. electron-negative, neutron-positive, proton-neutral 4.

Where do you think information is coded in a DNA molecule?