Answer:
Not sure,12.97(if u get it wrong let me know)
Explanation:
100cm=1m
Then 1297cm=
Depending on whether the cell is an animal cell or a plant cell, it could either be mitochondria or a chloroplast.
a) According to the reaction equation:
CaSO4(s) ↔ Ca2+(aq) + SO4-(aq)
when Kc = [Ca2+][SO4-]
when [Ca2+] = [SO4-] = X
and we have Kc = 2.4 x 10^-5 so ,by substitution we can get [Ca2+]&[SO4-]
2.4 x 10^-5 = X^2
∴X = 0.0049
∴[SO4-] = [Ca2+] = 0.0049 M
b) when we have [Ca2+] = 0.0049 M so we can get the no.of moles of CaSO4:
moles of CaSO4 = molarity * volume
= 0.0049 M * 1.2 L
= 0.00588 moles
when we know the molar mass of CaSO4 = 136.14 g/ mol, So we can get the mass:
∴mass of CaSO4 = moles of CaSO4 * molar mass of CaSO4
= 0.00588 moles * 136.14 g/mol
= 0.8 g
