Question

calculate the number of moles of calcium, Ca, that contains 2x 1023 calcium atoms.

Answer 1

Answer:

CaCO

CaCO 3

CaCO 3

CaCO 3

CaCO 3 atomic mass = 40+12+3×16

CaCO 3 atomic mass = 40+12+3×16 =100

CaCO 3 atomic mass = 40+12+3×16 =100moles =

CaCO 3 atomic mass = 40+12+3×16 =100moles = atomicmass

CaCO 3 atomic mass = 40+12+3×16 =100moles = atomicmassgramweight

CaCO 3 atomic mass = 40+12+3×16 =100moles = atomicmassgramweight

CaCO 3 atomic mass = 40+12+3×16 =100moles = atomicmassgramweight

CaCO 3 atomic mass = 40+12+3×16 =100moles = atomicmassgramweight =

CaCO 3 atomic mass = 40+12+3×16 =100moles = atomicmassgramweight = 100

CaCO 3 atomic mass = 40+12+3×16 =100moles = atomicmassgramweight = 10020

CaCO 3 atomic mass = 40+12+3×16 =100moles = atomicmassgramweight = 10020

CaCO 3 atomic mass = 40+12+3×16 =100moles = atomicmassgramweight = 10020 (given)

CaCO 3 atomic mass = 40+12+3×16 =100moles = atomicmassgramweight = 10020 (given)=0.2 moles