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Juliette [100K]
3 years ago
10

What is one important step to complete before starting a laboratory experiment?

Chemistry
2 answers:
gtnhenbr [62]3 years ago
6 0

Answer:

ask the teacher

Explanation:

took the test got a 90 i got something wrong but it was a hard question-

Nimfa-mama [501]3 years ago
3 0

Answer:

Ask the teacher

Explanation:

Ask if you have to clean up or if you are not prepared for an experiment

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<em>V= 110mL = 110cm³ = 0,11dm³</em>
<em>C = 1,244 mol/L = 1,244 mol/dm³</em>


C = n/V
n = 1,244×0,11
<u>n = 0,13684 moles</u>

<em>mCa(OH)₂ = 74 g/mol</em>


1 mole Ca(OH)₂ ------------ 74g
0,13684 ---------------------- X
X = 74×0,13684
<u>X = 10,12616g</u>

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