Question

Choose the correct coefficients to balance the following equation: __CaCO3 + __HCl arrow __CaCl2 + __CO2 + __H2O.

1, 2, 1, 1, 1

2, 4, 2, 1, 1

2, 2, 1, 2, 1

1, 2, 1, 1, 2

Answer 1

@Kevin @welshfella

Answer 2

you have to get the same number of atoms on both sides.

just make a chart (listing all the atoms appearing on each side) and use a calculator if you need to

Answer 3

1, 2, 1, 1, 1

Answer 4

Thanks.