As an electron in a hydrogen atom moves from the second principal energy level to the first principal energy level, the energy of the atom: 1) decreases 2) increases 3) stays the same

How many milliliters of. 45m hcl will neutralize 25ml of 1m koh?

A Potassium (K) atom attains a stable electron configuration when it combines with. one chlorine atom two chlorine atoms one calcium atom two calcium atoms

Due to food scarcity in ancient times people had to spend

What pressure is required to reduce 57 mL of a gas at standard conditions to 19 mL at a temperature of 26°C?

Which statement best explains the backward motion of the boat as the person moves forward a: every mass exert a force on every other mass b: an object at rest tends to stay at rest c: friction opposes the motion of an object d: for every action

When 1 g of sodium chloride (NaCl) is placed in 100 g of water, a solution results. Once the solution is prepared, water is now considered what part of the solution?

1. How is pressure affected as depth increases? 2. As the sun heats the surface of the oceans, two layers of water result. What separates the layers? 3. How is temperature affected when? (a) the depth increases (b) the latitude increases 4.

Are nails in a jar with water a chemical change

What is the molarity of a solution composed of 4.73 g of potassium iodide (KI) dissolved in enough water to make 0.169 L of solution? Answer in units of M.

Suppose you were given a substance and asked to determine whether or not it was a plasma. Write the characteristics you would look for to identify the substance.