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Ira Lisetskai [31]
1 year ago
14

The energy output from a chemical reaction is dependent on the amount of chemicals used.The table shows this relationship.What i

s a reasonable amount of energy output from the reaction of 32 moles of the chemicals?
A) 77 joules
B) 92joules
C) 110joules
D) 128joules

Mathematics
1 answer:
telo118 [61]1 year ago
6 0

Answer:

D

Step-by-step explanation:

You can see from the table that  joules out = 4x moles in

for 32 moles       32 * 4 = 128 joules

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jason has 150 cents nickels and quarters. if the number of nickels he has is 5 less than the twice the number of quarters, how m
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Let's set up some simultaneous equations. Let the number of nickels be n, and the number of quarters be q. Now I'm from England so I had to look up the value of a nickel (I could guess the quarter though to be 25c), but apparently it's 5c

Okay we know that the total value of the coins is 150. This gives:

25q + 5n = 150

Rearranging to make n the subject:

n = 30 - 5q

Next, we use the second statement:

n = 2q - 5

Substituting this into the first equation:

2q - 5 = 30 - 5q
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Putting this value for q into the first equation:

n = 30 - 5(5) = 5

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Step-by-step explanation:

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Please have a look at the attached figure for \triangleABC and

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