How many significant figures does 0.070 have?

What is the volume of 1.25 M hydrochloric acid required to react completely with 45.0 mL of 0.500 M Ba (OH) 2?

Which element is oxidized and which is reduced in the following reactions? (Part A) N2 (g) + 3H2 (g) →2NH3 (g) Express your answers as chemical symbols separated by a comma. Enter the oxidized element first.

38. What is the chemical formula for sodium nitride? a. NaN c. Na, N b. Na, N d. NaN;

Which theory proposes that the moon was a passing asteroid pulled into orbit by Earth's gravity? A. impact theory. B. co-formation theory. C. capture theory D. synchronous theory

Which is the correct definition of density

A student places three ice cubes in a beaker and allows them to partially melt. if she measures the temperature of the water in the beaker, what will she most likely observe? explain your answer.

What is the metric unit for density

Is the compound CO ionic or covalent

What is the volume in ml of one pound of mercury?

How does the number of molecules in one mole of carbon dioxide compare with the number of molecules in one mole of water? A. There are four times as many molecules in one mole of carbon dioxide as there are in one mole of water. B.