How do the atomic mass and atomic number compare for helium?

a) The atomic mass is greater.

b) The atomic number is greater.

c) The atomic mass and atomic number are equal.

d) Helium does not have an atomic number.

What is the volume of 8.7 * 10 ^ 23 molecules of chlorine gas (Cl 2) ?

Which statements are inconsistent with dalton's atomic theory as it was originally stated?

A scientist monitors the contents of five duck nests in parks, five duck nests in zoos, and five duck nests in the wild during the spring and summer for three years. He makes a multiple line graph to plot and compare data for the three locations.

The principle stating that geological processes taking place on Earth today are the same as those of the past and can be used to describe geological events.

The efficiency of a machine is always less than 100% because

A type of rock that undergoes changes because of heat and pressure

How many milliliters of a 1.25 molar HCL solution would be needed to react completely with 60 g of calcium metal Ca+2HCl - - > CaCl2 + H2

What mass of copper is required to replace silver from 4. oog ogre silver nitrate dissolved in water

What kind of bond would two nonmetals typically make?

Which statement best applies collision theory to preventing a dangerous reaction from occurring? Store the reactants together at a low pressure. Keep all sparks or flames away from the reactants. Store the reactants together at a low temperature.