What element on the periodic table has a mass number of 50.9?

Is mass conserved when 200 g of water undergoes a physical change? Use complete sentences to support your answer by explaining how this can be demonstrated.

Foods rich in simple carbohydrates or starch but low in fat or fiber tend to A. be digested and absorbed quickly. B. be digested and absorbed slowly. C. create a quick decline in blood glucose levels. D. lower the amount of insulin in the body.

His mixture is known as a alloy and the solvent of this solution of metals is the.

A sample of methane gas occupies 4.50 gallons at a temperature of 80.0 F. If the pressure is held constant, what will be the volume of the gas at 100. degrees C?

How many atoms are there in 2.3 grams of H?

Given 4.80g of ammonium carbonate, find: Number of moles of the compound Number of moles of ammonium ions Number of moles of carbonate ions Number of moles of hydrogen atoms Number of hydrogen atoms

The density of water is 1.0 g/cm3 will rubbing alcohol float with a density of 0.81 g/cm3

Write an equation that shows the formation of the phosphide ion from a neutral phosphorus atom.

Which of the following terms is defined by the measure of mass per unit of volume? gravity density weight acceleration

Select the lon. O NO₂ H2SO4 O A3