This question is very hard and I'm having trouble with it

Determine the mass of KNO3 that dissolves in 100. grams of water at 40 degrees celsius to produce a saturated solution

Which type of mixture can be separated using magnetism?

Which of these is NOT a function of the digestive system? A. Breaks down your food B. Absorbs vitamins and minerals from your food C. Turns your food into energy you can use D. Protects your organs

Mutations are most directly caused by changes in the A. Cell organelles of tissues B. Genes of chromosomes C. Ribosomes in gametes D. Receptors on membranes

Which characteristics determines the chemical properties of matter?

Compared with a ph of 7, a solution of ph 5 has what times/fraction of the hydrogen concentration?

Write a formulae equation to represent the combustion of carbon to form carbon dioxide and the thermal decomposition of magnesium carbonate

A5.00 liter ballon of gas at 25 degree Celsius is cool to 0 degrees Celsius. What is the volume (liters) of the ballon?

How much thermal energy (q) is required to heat 15.2 g of a metal (specific heat = 0.397 J/G) from 21.0 degrees C to 40.3 degree C

Two gas jars are connected to each other, but they are separated by a closed valve. One gas jar contains oxygen, and the other is empty. What will happen when the valve is opened?