Students are designing an experiment to test the law of conservation of mass using the following materials: 10 g baking soda, 30 mL vinegar, an electronic balance, and a resealable plastic bag. Describe the basic procedure the students should follow to model this law.

total mass of the products is equal to the total mass of the reactants

The law of conservation of mass states that the total mass of the products must be equal to the total mass of the reactants , during a chemical reaction.

10 g baking soda, 30 mL vinegar, an electronic balance, and a resealable plastic bag .

CH3COOH + NaHCO3 = CH3COONa + CO2 + H2O

1. Since we now the amount of baking soada and that of vinegar,, we weigh the plastic bag.then Pour the  baking soda into the vinegar in a plastic bag and close it.

2. We mix the two by rubbing the plastic bag for proper mixing and  the reaction to occur.

3.The reaction forms sodium acetate, with the the evolution of trapped co2 gas and water.

 4. we weigh the plastic bag together with the products formed inside the  

We would find out that  The combined mass of the products would be equal to what each component weighed  on its  own.

Mass of reactants (baking soda + vinegar) = Mass of products (Sodium acetate + Carbon dioxide+ water)

See here on conservaton of mass:link

1. Students need to measure masses of the items.

2. Put baking soda and vinegar in a plastic bag and close it.

3. Mix the two, allowing for a reaction to occur.

4. Figure the mass of the plastic bag while the two components are inside.

5. The combined mass should be equal to what each weighed on their own.

Explanation:

the answer is 1 i believe

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer