Answer:
Explanation:
The quantity of moles of ethanol in the solution is:
The mass and volume of ethanol in the solution are, respectively:
The difference between the total volume of water and ethanol mixed to prepare the solution and the actual volume of solution is:
Answer:
4.Anything that has mass
Explanation:
In order to appreciate what matter is, we must first know that matter is the 'stuff' that makes up the universe. Everything in the universe is composed of matter. Matter in turn is made up of atoms. Intact mass is the quantity of matter in a body.
All matter must have mass and occupy space. Hence all matter must have a measurable mass. This is a fundamental property of all matter. Hence every object in the universe has mass because it is composed of matter. We find matter in our plates, spoons , clothes and indeed everything we see in the universe! For instance, you can measure the mass of a spoon because it is made of matter which has mass and occupy space.
A mole of water molecules contains 2 moles of hydrogen atoms and 1 mole of oxygen atoms.
Answer:
I think it is the second one
Explanation:
Because what the cold water did to the table salt, is that it separated its molecules dissolving the salt.
even though the rock salt was in hot water it was a bigger particle. But the big difference was only because the water temperature ️.
Increases as well. More heat means more energy is being supplied.
