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Ira Lisetskai [31]
3 years ago
9

What kind of reaction has the general form A+B → AB?

Chemistry
2 answers:
kirill115 [55]3 years ago
6 0
The answer choice isn’t there but it should be synthesis
LuckyWell [14K]3 years ago
5 0

Answer: combination (it is synonymous with synthesis)

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Calcium carbide reacts with water to produce acetylene gas according to the following equation: CaC2(s) + 2H2O(l)C2H2(g) + Ca(OH
gtnhenbr [62]

Answer: The number of moles of CaC_2 reacted was 0.229

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = Total pressure - vapor pressure of water = (749 - 23.8) mm Hg= 725.2 mm Hg = 0.954 atm    (760mmHg= 1atm)

V = Volume of gas = 5.87 L

n = number of moles = ?

R = gas constant =0.0821Latm/Kmol

T =temperature =25^0C=(25+273)K=298K

n=\frac{PV}{RT}

n=\frac{0.954atm\times 5.87L}{0.0821 L atm/K mol\times 298K}=0.229moles

CaC_2(s)+2H_2O(l)\rightarrow C_2H_2(g)+Ca(OH)_2(aq)

According to stoichiometry:

1 mole of C_2H_2 is produced by = 1 mole of CaC_2

Thus 0.229 moles of C_2H_2 is produced by = \frac{1}{1}\times 0.229=0.229 moles of CaC_2

Thus number of moles of CaC_2 reacted was 0.229

5 0
3 years ago
0.268/6.234 significant figures
den301095 [7]
The answer is 0.0430 following the rules of dividing and multiplying significant figures.
7 0
3 years ago
How many electrons are in the lowest occupied energy level in a Group 6A element?
kolbaska11 [484]

Answer:

2

Explanation:

4 0
4 years ago
Read 2 more answers
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