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BARSIC [14]
3 years ago
15

A 50.6 grams sample of magnesium hydroxide (Mg(OH)2) is reacted with 45.0 grams of hydrochloric acid (HCl). What is the theoreti

cal yield of magnesium chloride (MgCl2)? Mg(OH)2 + 2 HCl MgCl2 + 2 H2O
Chemistry
2 answers:
Ierofanga [76]3 years ago
8 0

answer c for plato users

zysi [14]3 years ago
7 0
            <span> Mg(OH)2(s) + 2HCl(aq) yield MgCl2(aq) + 2H2O(l)

grams HCl required = (50.6 grams Mg(OH)2) * (1 mol Mg(OH)2 / 58.3197 grams Mg(OH)2) * (2 mol HCl / 1 mol Mg(OH)2) * (36.453 grams HCl / 1 mol HCl) = 63.26 grams HCl required

Since there are only 45.0 grams HCl, then HCl is the limiting reactant.

theoretical yield MgCl2 = (45.0 grams HCl) * (1 mol HCl / 36.453 grams HCl) * (1 mol MgCl2 / 2 mol HCl) * (95.211 grams MgCl2 / 1 mol MgCl2) = 58.6 grams MgCl2 </span>
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Calculate the grams of C6H6 needed to produce 25 g of CO2<br> Show your work
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Answer:

The given reaction is a combustion reaction of benzene,

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and their mole ratio:

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1

m

o

l

C

6

H

6

With this,

m

a

s

s

o

f

C

O

2

=

(

20

g

C

6

H

6

)

(

1

m

o

l

C

6

H

6

78.11

g

C

6

H

6

)

(

6

m

o

l

C

O

2

1

m

o

l

C

6

H

6

)

(

44.01

g

C

O

2

1

m

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l

C

O

2

)

=

(

20

)

(

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(

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g

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2

78.11

=

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2

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a

s

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o

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2

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it is a problem of app

3 0
3 years ago
A roller coaster starts down a hill at 10 m/s. Three seconds later, its speed is 32 m/s. What is the roller coaster’s accelerati
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32 = 10 + a(3)

32-10
---------  = a
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a = 22
      ----
       3

a = 7.3 m/s^2.

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Hope this helps!!
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