Question

questions based on mole concept plzz answer

Answer 1

my friend this ans is 1 mol

Answer 2

Answer:

Explanation:

57.) Atomic mass of PbO = 207 + 16 = 223

moles of 6.5g Pbo= 6.5/223 = 0.029

1 mole Pbo = 1 mole pbcl2

0.029 mole pbo = 0.029 pbcl2 (b)

58.) mole of 25.6g sucrose =  0.074 moles

no. of atoms of H = 0.074*6.022*10²³×22 = 9.91× 10²³ (b)

59.) 5×54+90×56+5×57/ 100 = 55.95u  (b)

62.) amount of oxygen obtained = 96 x 10³/255=3.92kg = 3920g