If an elements atomic mass is 70 and it has 39 neutrons how many protons does it have?

Match the following definitions to their correct terms. 1. any chemical compound that contains carbon solute 2. a liquid that acts to dissolve or suspend substances inorganic 3. a chemical compound that doesn't contain carbon organic 4.

A gas sample occupies 4.2L at a pressure of 101 kPa. What volume will it occupy if the pressure is increased to 235 kPa

The temperature of a sample of water increases by 69.5 degrees when 24,000 J of heat are applied. The specific heat of water is 4.18 J/gC. What is the mass of the sample? O 84.3 O 1692 407,356 7,117,495

The minimum amount of energy that reactants must have to start a chemical reaction is called

Is the number of atoms in a substance dependent on the type of substance present?

Which change is most likely to occur when a molecule of H2 and a molecule of I2 collide with proper orientation and sufficient energy? 1. a chemical change, because a compound is formed 2. a chemical change, because an element is formed 3.

Which substance is a diatomic molecule? a. he b. o2 c. co2 d. h2o?

What is the difference between the electronegativity values of sodium and bromine?

Which of the following elements is the most stable element? argon, manganese, phosphorus, robidium

List results of Chemical Reactions.