It is a rectangle so its opposite sides are congruent. Because they are congruent we can set them equal to each other and solve for x.
40 = 5x + 10
30 = 5x
6 = x
So the value of x is 6.
1. What is the name of the gas?
I believe the gas that is being produced is carbon dioxide gas.
2. NaHCO3 + HC2H3O2 ⟶ ________ + H2O + CO2
The missing substance would be sodium acetate or <span>NaC2H3O2. By looking at the number of atoms of the elements in reactant and the product you will know how many of the elements is lacking.</span>