How many grams are in 0.002 moles of barium nitrate, Ba(NO3)2

0.52 grams

Explanation:

To find the molar mass of Ba(NO3)2, use the periodic table and the mass of each element. Remember to multiply based on the number of atoms there are.

137.33 + [14.01+16(3)] 2 = 261.35

Now solve...

0.002 mol Ba(NO3)2 * 261.35 g Ba(NO3)2/1 mol Ba(NO3)2 = 0.5227

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.