An elements atomic number is 73. How many protons would an atom of this element have?

What is the difference between a light-year and an astronomical unit?

A can of soda contains many ingredients, including vanilla, caffeine, sugar, and water. Which ingredient is the solvent?

An aqueous solution containing both Sr2 + and CO32 - ions is mixed in order to precipitate SrCO3 (s). given there are 1.40 mL of 2.53 M Sr2 + ions, calculate the mass of SrCO3 that is formed. assume that all of the Sr2 + ions are consumed.

If 63.99 mL of Ba (OH) 2 is required to neutralize 56.3 mL of 0.0410 molar HCl, what is the molarity of the Ba (OH) 2?

Place the following in order of increasing magnitude of lattice energy CaO, MgO, SrS

A small 15 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

Liquid water is heated until it boils and becomes water gas. Which statement is true about the water?

You are conducting an experiment on plant growth. You take a plant fresh from the soil that weighs 5 kilograms (kg). Then you dry the plant overnight and determine the dry weight to be 1 kg.

What is the ratio of Fe+3 ions to O2 - ions in a neutral compound? a. 1:2 b. 2:1 c. 2:3 d. 3:2

What is the specific heat capacity of a 17.5g sample of an unknown metal that releases 6700J of heat when it cools from 90 to 25 degrees C?