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nordsb [41]
4 years ago
13

Covalent bonds between molecules inside living cells are often formed or broken through the addition or loss of __________.

Chemistry
1 answer:
svetoff [14.1K]4 years ago
7 0

Answer: water

Explanation:

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How can forgery be used in crime
Tems11 [23]

Some bad people will tend to forge dollar bills and make fake bills, giving them to cashiers and asking for it to be split into a different amount of bills so they are given real cash and wont be caught or they will buy things, return them and be given back real money and get away with it. This is obviously a crime because it's fake.

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3 years ago
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Which 2 options describes physical properties of matter
Ne4ueva [31]

Answer:

Its mass and volume

Explanation:

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3 years ago
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Find the heat produced from an 8.00 L cylinder of propane gas under 5.00 atm at 25.0 oC, if one mole of propane can produce 2220
Andrei [34K]

Answer:  3597 kJ of heat

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 5.00 atm

V = Volume of gas = 8.00 L

n = number of moles = ?

R = gas constant =0.0821Latm/Kmol

T =temperature =25.0^0C=(25.0+273)K=298K

n=\frac{PV}{RT}

n=\frac{5.00atm\times 8.00L}{0.0821 L atm/K mol\times 298K}=1.63moles

As it is given :

1 mole of propane produces = 2220 kJ of heat

Thus 1.63 moles of propane produces = \frac{2200}{1}\times 1.63=3597kJ

Thus 3597 kJ of heat is produced

4 0
3 years ago
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A chemical equation can be used to solve stoichiometry problems provided that it....
Zolol [24]

Answer:

includes the coefficients that are needed for balancing the equation.

Explanation:

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3 years ago
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What is the difference between a mixture and compound?
rewona [7]

Compound: a thing that is composed of two or more separate elements, basically it is a mixture

Mixture: a substance made by mixing other substances together

so go from there. I don't want to cheat by giving answers, so I hope this is guiding and helpful. please mark brainliest if it is!

4 0
3 years ago
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