How many mg of calcium are present in a 500-mg tablet of calcium carbonate? ?

What is the electron configuration of chlorine (cl) ?

Which of the following describes the physical state of the layers of the Earth from the outside to the center? A. solid, liquid, solid, partially melted B. solid, partially melted, liquid, solid C. solid, liquid, partially melted, solid D.

If a liquid is sealed in a container and kept at constant temperature, how does its vapor pressure change over time? It continues to steadily increase. It increases at first, then remains constant. It increases at first, then decreases.

What is the total electrons needed for an Octet of SiCL4?

A large piece of iron was reacted with an acid. What would happen to the rate of the reaction had the large piece been finely divided into smaller pieces?

How do compounds affect an atom's stability

You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you need to mix in order to make the required solution?

The definition of volume is? a) width*height b) the space occupied by mass c) the space occupied by a liquid d) the mass of liquid required to fill a container

What is the empirical formula of a substance that is 53.5% C, 15.5% H, 31.1% N?

What is the lowest layer of the atmosphere and what is its highest altitude?