If barium ions (Ca^2) have a charge of 2 + and hydroxide ions (C1^1) have a charge of 1-, the compound calcium chloride is?

a)Ca2C1

b)CaC1

c)CaC12

d)Ca2C12

Those are "ells" and not "1s".
What's with the barium ions (Ca^2) and hydroxide ions (Cl^1)? Ba ions are Ba^+2 and hydroxide ions are OH^-.
Anyway, the formula for a moleucle must add to zero; therefore, CaCl2 would be +2 for Ca and -2 for Cl and +2 and -2 = 0 so CaCl2 is the proper formula for calcium chloride.

Thanks

You're welcome! I apologize for the mistake in writing the formula for barium ions and hydroxide ions. You are correct that barium ions are Ba^2+ and hydroxide ions are OH^-. The proper formula for calcium chloride is indeed CaCl2, where calcium has a 2+ charge and chloride has a 1- charge. The charges balance out to zero in this formula.

It seems there is a misunderstanding with the information given in the question. Barium ions are represented as Ba^2+ (Ba with a 2+ charge), and hydroxide ions are represented as OH^- (OH with a 1- charge), not Ca^2 (calcium ions) and Cl^1 (chloride ions).

The correct formula for calcium chloride is CaCl2. Calcium has a 2+ charge, and chloride has a 1- charge. To determine the correct formula, you need to balance the positive and negative charges. Since calcium has a 2+ charge, it requires two chloride ions (each with a 1- charge) to balance the charges. Therefore, the formula is CaCl2, option d.

Remember to double-check the charges assigned to each ion when forming a compound and make sure they are balanced to produce a neutral compound.