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madreJ [45]
4 years ago
10

In the reaction K2CrO4(aq) + PbCl2(aq) → 2KCl(aq) + PbCrO4(s), how many grams of PbCrO4 will precipitate out from the reaction b

etween 500.0 milliliters of 3.0 M K2CrO4 in an excess of PbCl2?
Chemistry
2 answers:
svetoff [14.1K]4 years ago
8 0

A.  

1.5 grams

B.  

3.0 grams

C.  

480 grams

D.  

150 grams

are the answer choices...

Ostrovityanka [42]4 years ago
6 0
V=500.0 mL = 0.5 L
c=3.0 mol/L
M(PbCrO₄)=323.2 g/mol

m(PbCrO₄)=M(PbCrO₄)n(PbCrO₄)

m(PbCrO₄)=M(PbCrO₄)n(K₂CrO₄)=M(PbCrO₄)vc

m(PbCrO₄)=323.2*0.5*3.0=484.8 g
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Answer:

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4 0
3 years ago
What happens to valence electrons when a covalent bond forms?
abruzzese [7]

Explanation:

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5 0
3 years ago
11.9 g Cl2 is reacted with 10.7 g NaOH. How many moles of NaCl are produced?
melisa1 [442]

Answer:

1. 7.256g of NaCl

2. 47.33g of Cl2

Explanation:

2 moles of Na reacts to produce 2 moles of NaCl

8 moles of Na will still produce 8 moles of NaCl

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=58.5/8

=7.256g of NaCl

From the equation, 2 moles of Na reacts with 1 mole of Cl2

3/2 moles of Cl2 will react with 3 moles of Na

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Explanation:

4 0
3 years ago
The mass of Carbon is 12 g/mol and the mass of oxygen is 16 g/mol. What is the approximate percent composition by mass of CO2 (f
nikitadnepr [17]

Answer:

the last one

27% by 73%

Explanation:

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and

16/44*100 for O

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3 years ago
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KiRa [710]

Answer:

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Explanation:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. This law means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.

Im bad at these questions hope it helps and have a good day.

8 0
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