How many kilocalories are lost when 874.3 grams of water cools from 84.81 celsius to 48.20 celsius?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car