U can assume that riding the bus is a faster way to get to school because it is capable of a faster speed than a bicycle
Hello!
The ions that are present in solution are Ni⁺²(aq) and Cl⁻(aq)
Why?
When an ionic substance like Nickel Chloride (NiCl₂) dissolves in water, it dissociates into the individual ions that form the substance. Water molecules surround then the individual ions in a process called solvation.
It can be represented in the following chemical equation:
NiCl₂(s) → Ni⁺²(aq) + 2Cl⁻(aq)
Have a nice day!
To answer this question, you need to convert the 16.1 megabyte into second first. If the rate is 93kb/second, then the calculation would be:
16.1 mb x (1000kb/mb) / (93kb/second)= 173.12 second.
Then 16.1 mb music will last for 173.12 second. After that you can convert it into minutes: 173.12/ (60second/min)= 2.885 minutes.
I think it’s C because those elements tend to gain electrons while the deepest shade of green tend to give electrons
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
