3 years ago

Help me please i really ain't got much time today

Mathematics

1 answer:

Korolek [52]3 years ago

5 0

Answer:

only if you give me v-bucks in fortnite sniper_fn23134

Step-by-step explanation:

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a quantity of ethanol is cooled from 47.9° C to 12.3°C and releases 3.12 KJ of heat. what is the mass of the ethanol sample?

victus00 [196]

Answer:

35.9 grams

Step-by-step explanation:

We use the formula:

$q=m*C_p*\Delta T$

Where

q is heat released

m is mass

C_p is the constant 2.44

ΔT is change in temperature

We put the info in the formula and solve for m (mass):

$q=m*C_p*\Delta T\\-3.12 = m*2.44(12.3-47.9)\\-3.12*10^3=m*(-86.864)\\m=35.9$

The mass of ethanol is 35.9 grams

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4 years ago

For the function y = 3x^2 - 12x + 4, what is the mirror point for the y-intercept? Give your answer in (x,y) point form.

saveliy_v [14]

Answer:

Your in Pacyber aren't you? Mr. Breux class? Anyway the answer is (0,-4)

Step-by-step explanation:

The y intercept is (0,-4)

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3 years ago

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Nataliya [291]

Step-by-step explanation:

y=7x-10

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jek_recluse [69]

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Step-by-step explanation:

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Taya2010 [7]

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Step-by-step explanation:

I hope this helps

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3 years ago