If an unknown mineral has a hardness between 5 and 9, what could you do to the mineral to find out more about its hardness?

What is the term for a substance capable of dissolving another substance?

Imagine that you're able to fully dissolve a powered substance and water what can be said about this creation

A sample of ideal gas is in a sealed container. The pressure of the gas is 485 torr, and the temperature is 40 ∘C.

Why do you think knowing enthalpy of reaction might be useful?

Least reactive element of period 3

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?

Jack wants to know if it takes longer for warm water to freeze into ice cubes than cold water, so he performed the following experiment. Jack placed 50 mL of water in the refrigerator and allowed it to cool to a temperature of 4°C.

How to calculate average concentration

Suppose that you measure a pen to be 10.5 cm long. Convert this to meters.

How are amounts of hydrogen and oxygen gas made from the electrolytic decomposition of water related to the chemical formula of water?