How can the mass of a sample of matter be increased? freeze it? or burn it? adding matter? or boiling it?

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How many moles of gas sample are 5.0 L container at 373K and 203kPa

A saturated solution is made by dissolving a 23.5g of solute/100.0g of water at 20°. How many grams of solute would be needed to dissolve in 65.0g of water to make a saturated solution?

How many molecules of iron (II) phosphate awe produces when 3.6 grams of iron (II) hydroxide reacts with excess calcium phosphate

Describe two human actions that cause water pollution.

How many grams of KCl are produced when 60 grams of K are reacted?

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How do compounds affect an atom's stability

You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you need to mix in order to make the required solution?

The definition of volume is? a) width*height b) the space occupied by mass c) the space occupied by a liquid d) the mass of liquid required to fill a container