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7nadin3 [17]
3 years ago
11

The source of thermal energy that an internal combustion engine uses is _____

Chemistry
1 answer:
stiks02 [169]3 years ago
3 0

Answer:

the answer is coal gas

Explanation:

they were used for transportation

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Which two or more substances combine but keeps it properties​
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ANSWER FAST <br> is water wet? <br> a.) yes <br> b.) no<br> c.) a baby goat is a kid
Ksju [112]

Answer:

c

Explanation:

5 0
2 years ago
A student prepares a aqueous solution of butanoic acid . Calculate the fraction of butanoic acid that is in the dissociated form
ella [17]

Answer:

15.4%

Explanation:

If Ka = 0.54 mM = 1.51x10⁻⁵

Then;

C₄H₈O₂               -------->            C₄H₇O₂⁻          +           H⁺

I                    0.54x10⁻³                             0                                0

E                   0.54x10⁻³(1-x)                      0.54x10⁻³x                0.54x10⁻³x

Recall that x is the percentage degree of dissociation

From the ICE table;

Ka = [C₄H₇O₂⁻] [ H⁺]/[C₄H₈O₂]

1.51x10⁻⁵=(0.54x10⁻³x) (0.54x10⁻³x)/ 0.54x10⁻³(1-x)  

1.51x10⁻⁵ = 0.54x10⁻³x^2/1-x

1.51x10⁻⁵(1-x) = 0.54x10⁻³x^2

1.51x10⁻⁵ - 1.51x10⁻⁵x = 0.54x10⁻³x^2

Hence;

0.54x10⁻³x^2 + 1.51x10⁻⁵x - 1.51x10⁻⁵=0

x^2 + 0.028x - 0.028 = 0

Solving the quadratic equation here;

x = 0.154 or −0.182

Ignoring the negative result, x = 0.154

Hence, fraction of butanoic acid that is in the dissociated form in this solution = 15.4%

3 0
2 years ago
Someone please help me with these anything is helpful thanks
Bond [772]

Explanation:

1 sulfur dioxide 2 monosulfur dinitride 10 nitrogen dioxide

3 0
3 years ago
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