The Groups 1 and 2 on the periodic table contain what atom type?

A) metals

B) metalloids

C) non-metals

D) noble gases

How are repetition and replication alike and different?

Which of the following molecules can form hydrogen bonds? A) NH3 B) NaH3 C) BaH3 D) CH3

The specific heat of gold is 0.031 calories/gram C. If 10.0 grams of gold were heated and the temperature of the sample changed 20.0C, how many calories of heat energy were absorbed by the sample?

A chemist mixes 500 g of lead at 500°c with 1,200 g of water at 20°c. she then mixes 500 g of copper at 500°c with 1,200 g of water at 20°c. the specific heat capacity of lead is 0.1276 j/g°c and the specific heat capacity of copper is 0.3845 j/g°c.

The word hormone and feedback mechanism in the same sentence

Caffeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed ratio.

What type of grass is poisioness

What will happen if there is an insufficient supply of oxygen during the combustion of a hydrocarbon?

If a compound has a molar mass of 180 g/mol and its empirical formula is CH20, what is its molecular formula? CH20 C₂H4O2 C6H1206 C12H22011

How does a community look after a volcano erupts