Your answer is D Uranus because that's the only planet that rotates on its side besides that I'm going to say D.
I guess d correct answer is CaCO3
H2O or water, all humans are mostly mad of water and water covers most of the earth
MgCl2(aq) is an ionic compound which will have the releasing of 2 Cl⁻ ions ions in water for every molecule of MgCl2 that dissolves.
MgCl2(s) --> Mg+(aq) + 2 Cl⁻(aq)
[Cl⁻] = 0.73 mol MgCl2/1L × 2 mol Cl⁻ / 1 mol MgCl2 = 1.5 M
The answer to this question is [Cl⁻] = 1.5 M
