3 years ago

What are the chemical reactions of a burning candle?

Chemistry

1 answer:

Degger [83]3 years ago

4 0

The wax heats up and evaporates

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Your mommy buys you a helium balloon at the circus. It has a volume of 2.95 liters. What is the mass

GrogVix [38]

Answer:

if my calculation are correct, it's 295 grams

Explanation:

because liters converted to grams is .1=100 so if you take 2.95 times 100, it equals 295

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2 years ago

A 275 g sample of a metal requires 10.75 kJ to change its temperature from 21.2 oC to its melting temperature, 327.5 oC. What is

Vlada [557]

Answer:

$c=0.127\ J/g^{\circ} C$

Explanation:

Given that,

Mass of the sample, m = 275 g

It required 10.75 kJ of heat to change its temperature from 21.2 °C to its melting temperature, 327.5 °C.

We need to find the specific heat of the metal. The heat required by a metal sample is given by :

$Q=mc\Delta T$

c is specific heat of the metal

$c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{10.75\times 10^3\ J}{275\times (327.5 -21.2)}\\\\=0.127\ J/g^{\circ} C$

So, the specific heat of metal is $0.127\ J/g^{\circ} C$ .

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2 years ago

Which if the following sentences is not true about nitrogen gas at room temperature

Ivan

Answer:

Bud your answer would be D.

Hope that helps.

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2 years ago

The elements from which group would be most likely to react

timofeeve [1]

Answer:

Group 15

That is answer c

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2 years ago

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What is the name of this hydrocarbon? 2-butane 2-butene 2-butyne 4-butyne 4-propyne

monitta

2-butane is the correct answer

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3 years ago

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