What do physical changes do?

1 affect the size, shape, and a phase of a substance

2 after the chemical structure of a substance

3 increase the total mass of a substance

4. becomes a new chemical substance

only can choose one

In a coffee-cup calorimeter, 1.55 g KOH is added to 125 ml of 0.80 M HCl. The following reaction occurs. KOH (s) + HCl (aq) → H2O (l) + KCl (aq) Due to the reaction, the temperature of the solution changes from 32.3°C to 38.2°C.

What is a concentration cell and how does it work?

What is the molarity of a solution containing 55.8 g of mgcl2 dissolved in 1.00 l of solution?

What is the density of a block of salt having a mass of 8.0g and a volume of 25cm cubed

What will happen when iodine solution is added to potassium chloride.

Which planets' orbits is the belt located between the main asteroid belt?

For the baeyer-villiger oxidation of cyclohexyl methyl ketone

What will happen if the density of an object is less than the density of water?

Which cannot be separated into simpler substances? compound element solution mixture

What jobs involve chesmistry