What is the purpose of standard units of measurement?

1. Why was it necessary for Boyle to seal one end of his J-tube? 2. What would have happened if Boyle had allowed the temperature of the trapped air sample to change as he added mercury to the tube?

How many atoms of oxygen, O, are in 0.0595 moles of water?

Why is NaNO3 a homogenous mixture in terms of particle arrangement/composition?

If the temperature of a gas confined to such a cylinder is raised from 287°C to 587°C, what is the ratio of the initial volume to the final volume if the pressure exerted on the gas remains constant?

Express the value of exactly 15 centimeters to three significant figures.

Formula for sulfur tetrafluoride

Geologists think that parts of the Appalachian Mountains formed originally from sediments accumulating in shallow swamps. The weight of the sediments caused the area beneath them to sink, allowing more sediments to accumulate.

What volume would 1.5 mol of nitrogen gas occupy at standard temperature and pressure?

State three reason why do you think air is a mixture and water a compound?

Defined the following convection