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That's not a chemical equation. But I believe the coefficient (the number in front of HCl) is 1. Normally, when you write equations, you don't put the 1. It's just inferred.
2hcl
It depends on the equation.
3
2K + 2H2O --> 2KOH + H2 The balanced equation shows that there is a 2 in front of water.
That's not a chemical equation. But I believe the coefficient (the number in front of HCl) is 1. Normally, when you write equations, you don't put the 1. It's just inferred.
2hcl
Coefficients in a chemical equation represent the number of units of the formula immediately following the coefficient that are involved in the balanced equation for the reaction.
It depends on the equation.
3
3
1
2NF3 --> N2 + 3F2
2NF3 --> N2 + 3F2
2K + 2H2O --> 2KOH + H2 The balanced equation shows that there is a 2 in front of water.
The valence of zinc is 2+.
2