The answer is A.

During any chemical change the total mass doesn’t changes. Whatever the total mass of starting materials was present the same mass of ending products is present in a chemical reaction.

5 0

3 years ago

When aluminum, Al, metal is dipped in an aqueous solution of hydrochloric acid, HCl, hydrogen gas, H2, is produced with the form

Alex17521 [72]

Answer:

2Al (s) + 6HCl (aq) → 2 AlCl3 (aq) + 3H2 (g)↑

Explanation:

- We can put an up arrow to H2 cause as it is a gas, it can be released to the atmosphere.

- Aluminum as metal must be solid.

- As we have two solutions, both are aqueous phase.

- The stoichiometry must match on both sides of the reaction to have the same amount of elements of each compound.}

Reactants : 2 Aluminun

6 Hydrogen

6 Chloride

Products:

2 Aluminun

2.3 = 6 Chloride

3.2 = 6 Hydrogen

8 0

3 years ago

Start with 3 breads and 2 cheeses. How many products are made? 1 What are the leftovers?

Tanya [424]

Answer:

1 product is made. The left overs are 1 piece of bread and 1 slice of cheese

Explanation:

8 0

2 years ago