What is the density of helium in grams per liter?

The point along a planet's orbit where it is closest to the sun is called the

An object of mass 10.0 kg and volume 1000 ml and density 10 g/ml sinks in water who’s density is 1.0 g/ml. what is the mass of the water which has been displaced in kilograms

Asolution is produced in which water is the solvent and there are four solutes. which of the solutes can dissolve better if the solution is heated?