SA

Hello I'm too confused in this A proper set is said to be the elements that are not all included in a set A subset however is said to be the elements that are all included of set Am I right and if not Can someone make it clearer !!!!

why is it important to add 1M HCl dropwise to the crucible?

An automobile gasoline tank holds 45 kg of gasoline. When the gasoline burns, 158 kg of oxygen are consumed and carbon dioxide and water are produced.What is the total combined mass of carbon dioxide and water that is produced?

A 60 kg skier is coming down a hill that has an incline of 35°. If the force of friction between the ski and the snow is 6 N, how fast does the velocity change per second?

If the mass of oxygen is 16 times as large as the mass of hydrogen, what is the distance between the centre of the oxygen atom and the centre of mass of the water molecule? (Note: 1 pm = 1 x 10-12 m).

The melting point of a solid is 90°C. What is the heat required to change 2.5 kg of this solid at 30°C to a liquid? The specific heat of the solid is (390 J/(kg.K)) and its heat of fusion is (4000 J/kg).

15000

A. meaning!!!!

if your in honors hush my child is correct not ur favorite person