What is approximate half-life of carbon-14?

A. 300 years

B. 2,400 years

C. 5,720 years

In a reversible reaction, both the forward and reverse reactions take place A. at the same rate. B. at two different rates. C. at varying, unequal rates. D. under different experimental conditions.

I'm named after the person who created the first periodic table. who am I?

A depositional also feature that forms where a stream enters a lake or an ocean is a

An open flask is half filled with water at 25°C. Phase equilibrium can be reached after (1) more water is added to the flask (2) the flask is stoppered (3) the temperature is decreased to 15°C (4) the temperature is increased to 35°C

You are instructed to add 100 MLS of hs04 to 2500 MLS of buffer. What is the dilution

Does skin have a nucleus true or false

Bacteria are only found in decaying matter. A. True B. False

Which is considered a chemical mutagen? tanning beds tobacco X-rays precious metals

Combining 0.380 mol Fe2O3 with excess carbon produced 13.7 g Fe Fe2O3 + 3C → 2Fe + 3CO What is the actual yield of iron in moles? What is the theoretical yield of iron in moles? What is the percent yield?

When a hydrogen electron makes a transition from n=3 to n=1?