Which combination of the substances in a bath bomb might produce a gas? Write CER what stands for claim, evidence, and reasoning so that's all you need to write in that format.

We figure out that: Citric acid and baking soda combined are the only substances from the bath bomb that, when combined with water, cause gas bubbles to form.

Explanation:

https://www.openscied.org/wp-content/uploads/2020/07/7.1-Chemical-Reactions-Storyline.pdf

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lesson 4

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2