If a substance has a half life of 45 days, how much of the original substance would be left after 90 days?

Determine the specific heat of copper from the fact that 38 g of 80°C copper are needed to raise the temperature of 15 g of water from 22°C to 33°C

It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration). Write an equation that shows the dehydration of manganese (II) sulfate monohydrate.

Which statement best describes a procedure for making a 20 percent solution of a liquid detergent for an experiment? A.) Add 10mL of liquid detergent to 2mL of distilled water. B.) Add 20mL of distilled water to 5mL of liquid detergent. C.

In a chemical change, the substance that you end up with is the A. Reactant B. Product C. Displacement element D. Exchange element

While studying force fields, Ms. Garcia told her students they were about to experiment with magnets. Before beginning the magnet experiments, Ms.

Determine the relative formula mass of glucose (C6H12O6) using the periodic table below. A. 29.1 g/mol B. 24.0 g/mol C. 15.0 g/mol D. 180.1 g/mol

How many moles of potassium chloride are in 28 grams of KCl? A.).265 mole KCl B.).856 mole KCl C.).376 mole of KCl (think it's this but idk) D.) 1.2 mole KCl

An unknown liquid has a pH lower than 7, conducts electricity poorly, and tastes sour, what kind of solution is the unknown?

Five beans have a mass of 2.1 g. How many beans are in 0.454 kg of beans.

As the temperature of a liquid goes up, the average speed of its particles. This means that the kinetic energy of the particles