How many protons and electrons does 0^2 - have?

For an object to remain at rest, which of the following must be true? The forces on it are balanced There is not friction Gravity does not act on it The onject has no mass

According to the following reaction, how many moles of calcium carbonate are necessary to form 0.906 moles carbon dioxide? calcium carbonate (s) calcium oxide (s) + carbon dioxide (g)

Why are chlorides soluble?

What organisms, other than bacteria, are able to perform nitrogen fixation? a. Viruses c. Algae b. Trees d. Protists

4) Calculate the heat needed to melt 40.0 g of ice at 0°C?

As the average kinetic energy of the particles in a gas increases, which of the following occurs? The temperature of the gas increases. The temperature of the gas decreases. The number of particles increases. The number of particles decreases.

What is the type of strong chemical bond between carbon, hydrogen, and oxygen atoms in a single organic molecule?

0.100 mol of CaCO3 and 0.100 mol CaO are placed in an 10.0 L evacuated container and heated to 385 K. When equilibrium is reached the pressure of CO2 is 0.220 atm. 0.

What is true about the charges of transition metal ions?

A gas obeys the ideal-gas equation of state P V = N k T, where N = n NA is the number of molecules in the volume V at pressure P and temperature T and n is the number of gm-moles of the gas.