The heavier a gas molecule,

1) At the same temperature, the faster it travels

2) At the same temperature, the slower it travels

3) At the same pressure, the faster it travels

4) At the same pressure, the slower it travels

A number written in front of a chemical formula is a what?

What is the molarity of 390 mL of solution that contains 0.74 mol NaCl?

Which of these equations is balanced? A. 2Nac1+H2so4--->Na2so4+2Hc1 B. 2cao+H20-->CaC0h) 2 C. H20+co-->h2c03 D. MN+FE-->mns+fe

How can light be emitted from an atom in ground state

The concentration of calcium in a cell is 3%. the concentration of calcium in the surrounding fluid is 1%. how could the cell obtain more calcium?

Explain the relationship between the spinning pinwheel, the X, and the electron cloud

Lead forms two compounds with oxygen. One contains 2.98g of lead and 0.461g of oxygen. The other contains 9.89g of lead and 0.763g of oxygen. For a given mass of oxygen, what is the lowest whole-number mass ratio of lead in the two compounds

How many liters of nh3 are needed to react completely with 30.0 l of no (at stp) ? 4nh3 (g) + 6no (g) → 5n2 (g) + 6h2o (g) ?

What is the valence number of lithium?

How do buffers affect the pH of a solution? I would greatly appreciate an answer to this question.