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blagie [28]
2 years ago
13

PLease help my imma mark brainlist plsss

Chemistry
1 answer:
iogann1982 [59]2 years ago
4 0

Answer:

Chemical reactions that absorb (or use) energy overall are called endothermic. In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products.

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Which would easily give up more electrons during bonding?
Oliga [24]
Lie I think I believe
5 0
3 years ago
What is an appropriate stepwise synthesis for the following synthesis that uses ethyl 3-methylbutanoate as the only source of ca
gayaneshka [121]

Explanation:

Using ethyl 3-methylbutanoate as your only source of carbon and using any other reagents necessary, propose a stepwise synthesis for the following conversion.

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6 0
3 years ago
Determine the theoretical yield and the percent yield if 21.8 g of K2CO3 is produced from reacting 27.9 g KO2 with 57.0 g CO2. T
Alex_Xolod [135]

Answer:

26.9 g

81%

Explanation:

The equation of the reaction is;

4 KO2(s) + 2 CO2(g) → 3 O2(g) + 2 K2CO3(s)

Number of moles of KO2= 27.9g/71.1 g/mol = 0.39 moles

4 moles of KO2 yields 2 moles of K2CO3

0.39 moles of KO2 yields 0.39 × 2/4 = 0.195 moles of K2CO3

Number of moles of CO2 = 57g/ 44.01 g/mol = 1.295 moles

2 moles of CO2 yields 2 moles of K2CO3

1.295 moles of CO2 yields 1.295 × 2/2 = 1.295 moles of K2CO3

Hence the limiting reactant is KO2

Theoretical yield = 0.195 moles of K2CO3 × 138.205 g/mol = 26.9 g

Percent yield = actual yield/theoretical yield × 100

Percent yield = 21.8/26.9 × 100

Percent yield = 81%

5 0
3 years ago
13. Examine the following table, each letter represents a piece of missing information. Below
Romashka-Z-Leto [24]

Answer: i can understand it sorry

Explanation:

5 0
3 years ago
A wooden block has a mass of 125 g and a volume of 55 cm3. What is its density?
leonid [27]

Answer:

d = 2.27 cm3

Explanation:

m = 125 g

V = 55 cm3

m = V × d

=> d = m/V = 125/55 = 2.27 g/cm3

4 0
2 years ago
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