What are the number of protons, neutrons and electrons in the this isotopes

89

Sr

38

Calculate the volume in liters required to prepare a 5.00 m solution of nacl using 15.4 g of nacl

Two different gases are stored in separate closed containers. If both gases have a temperature of 50°C, which statement is true? A. The thermal energies of gas molecules in the two containers are unrelated. B.

A constant volume of gas is heated from 25.0ºC to 150.ºC. If the initial pressure was 760. torr, what is the final pressure?

How many atoms are in 1.50 moles of fluorine gas?

Which of the compounds is more soluble in an acidic solution than in pure water?

What is the net electrical charge on a magnesium ion that is formed when a neutral atom loses two electrons?

Solid magnesium carbonate (mgco3) and solid sodium nitrate were mixed, placed in water, and stirred. what is observed? 1. mgco3 and nano3 will not dissolve. 2. mgco3 and nano3 will dissolve. 3. mgco3 will remain undissolved and nano3 will dissolve.

A method of lowering the concentration of HCl (aq) is to allow the solution to react with a small quantity of Mg. How many milligrams of Mg must be added to 219 mL of 1.032 M HCl to reduce the solution concentration to exactly 1.000 MHCl

An autoclave would often be used by which of the following scientists?"

When discussing acids and bases any substance that accepts a patron by definition is considered an