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marusya05 [52]
3 years ago
10

PLEAZE HELP!!!

Chemistry
1 answer:
Alla [95]3 years ago
7 0

Answer:

V= 12mL

Explanation:

you had the right idea with your Significant figures however, when we divide we see that it requires 2 significant figures as our least amount. this is because when looking at our division, 62 has 2 sig. fig. while 5.35 has a total 3. when looking at your answer we see that you had a total of 3 sig. figures. so in actuakity you had to round up to 12 and not to the tenths because the decimal makes .6 count as your third sig fig.

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Mazyrski [523]

Silicon is the element having a mass of 28.09 g

<u>Explanation</u>:

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3 years ago
Please Help Weak Acid Base Problems!!!
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Answer:

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3 0
3 years ago
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An example of a homogeneous mixture is 1. oil and vinegar dressing. 2. concrete. 3. a mixture of salt and pepper. 4. salt water
Sidana [21]

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2 years ago
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gladu [14]

Answer:

\large \boxed{\text{2.52 mol Al}}

Explanation:

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n/mol:    1.26

The molar ratio is 4 mol Al:2 mol Al₂O₃.

\text{Moles of Al} = \text{1.26 mol Al$_{2}$O}_{3} \times \dfrac{\text{4 mol Al}}{\text{2 mol Al$_{2}$O}_{3}}= \textbf{2.52 mol Al}\\\\\text{The reaction produces $\large \boxed{\textbf{2.52 mol Al}}$}

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