Which element has the greatest density at STP?

(1) magnesium (3) barium

(2) beryllium (4) radium

What compound is O2H?

What are two types of pure substances? what is the difference between the two?

Many scientists believe that crust leaves plate movement occurs because of convection cells in earths - -

Identify whether longhand notation or noble-gas notation was used in each case below. Potassium (K) : 1s22s22p63s23p64s1

What change takes place when a liquid absorbs heat energy without increasing its temperature? A. the pressure increases B. it vaporizes C. it solidifies D. the volume decreases

How many grams of KCl are produced when 60 grams of K are reacted?

Whats a solution! people

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