Answer:
about 0.9 mol
Explanation:
there are 22.990 g/mol of Na
20.7/22.99 = 0.900391 mol
about 0.9 mol
1.05 x 10 to the 21 power formula units of lead (IV) phosphate
Answer:
60g/mol
Explanation:
By using nucleon numbers given on the periodic table, the mass of 1 mole of each element is:
C= 12g
H= 1g
O= 16g
Since molar mass is the sum of the masses of each element present in the compound,
Molar Mass (Mr) = 12+3(1)+12+16(2)+1 = 60g/mol
A base produces hydroxide ion in water
