Kiley wants to balance the equation H2 + N2 → NH3. Which would be her first step in balancing an equation? multiplying the subscripts in the atoms of the reactants together adding the coefficient 3 in front of H2 and the coefficient 2 in front of NH3 changing the subscripts so they match for the total number of atoms creating a chart that shows the number of atoms in the reactants and products

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt