Which tool is used to measure an object's mass?

A.

graduated cylinder

B.

meter stick

C.

digital thermometer

D.

electronic

Gas A effuses 0.68 times as fast as Gas B. If the molar mass of Gas B is 17 g, what is the mass of Gas A?

Are these statements true or false? 1. Two sigma bonds comprise a double bond. 2. A triple bond consists of one pi bond and two sigma bonds. 3. Bonds formed from atomic s orbitals are always sigma bonds. 4.

How can you cool water faster?

What is the mass of 6.80 moles H2O H = 1.008 amu O = 15.999 amu

What is the concentration of nitrate ions in a 0.225 msr (no3) 2 solution?

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?