How many grams is 9.03 moles of mgso4? round answer to three significant figures.

Which formula can be used to calculate the molar mass of hydrogen peroxide

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

In a 28 g serving of cheese curls there are 247mg of sodium. how much sodium is in a 12.5 ounce bag