The two most common alkaline earth metals are

a. copper and zinc.

b. iron and silver.

c. sodium and potassium.

d. calcium and magnesium.

Explain the difference between the biotic and abiotic factors in an ecosystem

Where would the gravitational attraction between the earth and moon be the weakest

The net ionic equation, H3PO4 (aq) + 3 OH - (aq) Imported Asset PO4-3 (aq) + 3 H2O (l), best represents which type of acid-base reaction? strong acid-strong base weak acid-strong base strong acid-weak base weak acid-weak base

If two gases are present in a container, the total pressure in the container is equal to a. the sum of the pressures that are exerted by each of the two gases. b. twice the sum of the pressures that are exerted by the individual gases. c.

How many protons does an atom of Iodine (I), #53, have if it has an atomic mass of 127?

How does Q compare to Keg? O Q> Keq O Q< Kea OQ = Keg

What is the mass (in grams) of 9.09x10^24 molecules of methanol (CH3OH) ? AND How many moles of N are in 0.183g of N2O?

What are the basic building blocks of matter? A) molecules B) atoms C) electrons D) compounds

How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle

What is the chemical formula for the compound formed between sodium and iodine?