2 years ago

PLEASE HELP!!!!!!!!!!! WILL AWARD 50 POINTS!!!!!!!!!111

Chemistry

2 answers:

Novay_Z [31]2 years ago

7 0

(Might be wrong).................

Vinil7 [7]2 years ago

3 0

I am pretty sure the answer is . But I might be wrong.

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Which of the following statements is true?

liubo4ka [24]

Answer:

a is the anwser

Explanation:

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3 years ago

If the mass of a material is 104 grams and the volume of the material is 21 cm3, what would the density of the material be?

WITCHER [35]

Remembering that
d = m ÷ v

d = ?
m = 104 g
v = 21 cm³

Therefore:

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2 years ago

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What volume in milliliters of 1.420 M sulfuric acid is needed to neutralize 3.209 g of aluminum hydroxide 3 H 2 SO 4 (aq)+2 Al(O

nadya68 [22]

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$V=43.46mL$

Explanation:

Hello!

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

$3H_2SO_4+2Al(OH)_3\rightarrow Al_2(SO_4)_3+6H_2O$

Whereas the ratio of sulfuric acid to aluminum hydroxide is 3:2; thus, we first compute the moles of sulfuric acid that complete react with 3.209 g of aluminum hydroxide:

$n_{H_2SO_4}=3.209gAl(OH)_3*\frac{1molAl(OH)_3}{78.00gAl(OH)_3} *\frac{3molH_2SO_4}{2molAl(OH)_3} \\\\n_{H_2SO_4}=0.0617molH_2SO_4$

Then, given the molarity, it is possible to obtain the milliliters as follows:

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Best regards!

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2 years ago

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3 years ago