Fill in the blank to balance the following chemical equation:

2 al + h2so4 --> al2(so4)3 + 3 h2

match each chemical reaction to its type:

c3h8 + 5 o2 --> 3 co2 + 4 h2o

2 h2o2 --> 2 h2o + o2

agno3 + kbr --> agbr + kno3

cucl2 + zn --> zncl2 + cu

cao + h2o --> ca(oh)2

a.
combustion

b.
synthesis

c.
decomposition

d.
single replacement

e.
double replacement

you suspect one of the products of a single replacement is hydrogen gas. how might you experimentally confirm your prediction? choose the best option.

watch for bubbles to form in solution which indicates a gas was produced.

waft to detect an odor from the test tube.

place a burning splint near the end of the test tube and listen for a 'pop' sound.

hydrogen gas is never a product in a chemical reaction.

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