3 years ago

One hexagonal base and the other faces in the shape of triangles

Mathematics

1 answer:

frozen [14]3 years ago

6 0

What ? more info is needed please

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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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Aloiza [94]

Answer:

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Step-by-step explanation:

x + 2 > 6

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x > 4

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Ilia_Sergeevich [38]

Answer:

$x,y\ could\ be\ any\ real\ numbers$

Step-by-step explanation:

$As\ a\ linear\ equation\ in\ two\ variable\ has\ infinite\ solutions,\\5x-2y=18, will\ also\ have\ infinite\ solutions\ and\ x\ and\ y\ can\ take\ any\ real\ values.$

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56% of ___ is 84.<br> Explain your method.

AnnyKZ [126]

150% of 84 i believe lol .

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Which of the following numbers is irrational?

Nastasia [14]

The believe the answer would be D.

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