Which of the following are always the same for atoms of the same element?

Mass of an atom

Atomic number

Neutron number

Mass number

Chemistry How many water molecules are in 1.9 moles of water? Use 6.022 X 1023 for Avogadro's Number! Use "e-notation" when answering. 6.022 X 1023 would be entered as 6.022e23

What is the compound of P2O5

In a separate experiment beginning from the same initial conditions, including a temperature Ti of 25.

Which of the following scientists is credited with the idea that early life formed through a series of chemical reactions that make simple compounds more complex? urey miller oparin darwin

If the solution surrounding a cell contains the same amount of solute as the cytoplasm the osmotic condition is said to be:

What happens to a reactant molecules when forming product molecules

Which is the atomic number of an atom with six valence electrons

O2 + CS2 → CO2 + SO2 Which of the following shows the equation balanced?

Convert 970. mm Hg to atm.

The addition of a catalyst in a chemical reaction (A) increases the concentration of products at equilibrium. (B) increases the fraction of reactant molecules with a given kinetic energy.