Suppose a sample of air can hold at most 10 grams of water vapor. If the sample actually had 2 grams of water vapor, what is its relative humidity

Write the symbol for a calcium ion. How many electrons does it have? If the mass number is 41, then how many neutrons does it have?

When one atom of hydrogen (H) combines with one atom of chlorine (CI), a polar covalent bond forms between the H and the more electronegative Cl, resulting in a molecule of HCI.

Animals breathe oxygen and release carbon dioxide during cellular respiration according to the equation below. How much oxygen is needed to produce 120 grams of carbon dioxide? C6H12O6 + 6O2 - > 6CO2 + 6H2O

When the temperature of a rigid hollow sphere containing 565 L his gas is held at 615 K, the pressure of the gas is 1,755 Kpa. How many moles of helium does the sphere contain?

What dissolved species are present in a solution of zncl2?

What are the two main systems we use for describing acids and bases?

Why do polar covalent bonds form?

What are some conditions that might control deposition

What are four basics states of matter

For beta radiation, what stops its penetrating abilities? aluminum a piece of paper skin thin fabric