Why is hydrogen unique among the elements

For multiple covalent bonds to form in molecules the molecules must contain carbon nitrogen or

How can carbon cycle very quickly back into the enviornment

Which of the following groups contains reactive elements that need to gain only one electron to have a full outer energy level? alkali metals alkaline earth metals halogens noble gases

Insulation products are used to __ energy loss. enlarged decrease increase protect

1) What type of star covers all brightness and temperatures? A) White Dwarfs B) Main Sequence Stars C) Giants D) Supergiants 2) What type of stars are bright and cool? A) White Dwarfs B) Main Sequence Stars C) Giants D) Supergiants

True or false? All atoms of the same element have the same atomic mass

Write a balanced equation for the reaction of copper with silver nitrate. According to the balanced equation, what is the mole ratio of silver produced to copper reacted? _ mol Ag produced : _mol Cu created

Describe what happens to the potential energy if you increase the mass of the object. IL

The mass of the ocean is about 1.8 X 10^21 kg. If the ocean contains 1.076% sodium ion, Na+, what is the mass in kilograms of sodium in the ocean?

How many formula units are contained in 23.5 g of Sb2S3