Balancing Chemical Equations Video Lessons

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# Problem: Now that we have put a coefficient of 3 in front of CaSO4, what coefficient should go in front of CaCl2 to balance calcium (Ca)?3 CaSO4 + AlCl3 → ?CaCl2 + Al2(SO4)3Express your answer numerically as an integer.According to the law of conservation of mass, matter cannot be created or destroyed. Therefore, a chemical equation must show the same number of each kind of atom in the reactants as it does in the products. As shown in the figure, the balanced equation 3 H2 + N2 → 2 NH3 has 6 atoms of hydrogen and 2 atoms of nitrogen on each side of the arrow. One is often presented with unbalanced chemical equations for which one must supply the coefficients.The following equation is not balanced:CaSO4 + AlCl3 → CaCl2 + Al2(SO4)3

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###### Problem Details

Now that we have put a coefficient of 3 in front of CaSO4, what coefficient should go in front of CaCl2 to balance calcium (Ca)?

3 CaSO4 + AlCl3 → ?CaCl2 + Al2(SO4)3

According to the law of conservation of mass, matter cannot be created or destroyed. Therefore, a chemical equation must show the same number of each kind of atom in the reactants as it does in the products. As shown in the figure, the balanced equation 3 H2 + N2 → 2 NH3 has 6 atoms of hydrogen and 2 atoms of nitrogen on each side of the arrow. One is often presented with unbalanced chemical equations for which one must supply the coefficients.

The following equation is not balanced:

CaSO4 + AlCl3 → CaCl2 + Al2(SO4)3

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Balancing Chemical Equations concept. You can view video lessons to learn Balancing Chemical Equations. Or if you need more Balancing Chemical Equations practice, you can also practice Balancing Chemical Equations practice problems.