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tino4ka555 [31]
3 years ago
15

1) A block of aluminum has a mass of 40.5

Chemistry
1 answer:
-Dominant- [34]3 years ago
7 0

Answer:

15 ml

Explanation:

\frac{40,5}{y}=\frac{2,7}{1}

2,7y=40,5

y=40,5/2,7=405/27= 15ml

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How many milliliters of a 1.5 m h2so4 are needed to neutralize 35ml sample of a 1.5 m solution?
DochEvi [55]

Answer:

1) 17.5 mL

Explanation:

Hello,

In this case, the reaction between sulfuric acid and potassium hydroxide is:

H_2SO_4+2KOH\rightarrow K_2SO_4+2H_2O

In such a way, we notice a 1:2 molar ratio between the acid and the base, therefore, at the equivalence point we have:

2*n_{acid}=n_{base}

And in terms of concentrations and volumes:

2*M_{acid}V_{acid}=M_{base}V_{base}

Thus, we solve for the volume of acid:

V_{acid}=\frac{M_{base}V_{base}}{2*M_{acid}} =\frac{35mL*1.5M}{2*1.5M} \\\\V_{acid}=17.5mL

Best regards.

5 0
3 years ago
Which of the following is the balanced equation for this process?
Hunter-Best [27]
The answer is A.Hope this helps
8 0
3 years ago
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avanturin [10]

Answer:

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Explanation:

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3 years ago
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LUCKY_DIMON [66]

Answer:

it would have sound a

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Explanation:

have a good day /night

may i please have a branlliest

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2 years ago
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kykrilka [37]
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Disadvantages
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