2 years ago

How much energy does it take to melt 2 kg of ice? (Refer to table of constants for water.)

2 answers:

ioda2 years ago

5 0

It would be C

2 kg x 1000 g/kg x 1mol/18.02 x 6.03 kj/mol = 669kj

4 0

Your answer should be C :)

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sdas [7]

Answer:

Alkali metals are soft and have low melting points.

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nexus9112 [7]

Answer:

V₂ = 50.93 L

Explanation:

Initial volume, $V_1=43.1\ L$

Initial temperature, $T_1=24^{\circ} C=24+273=297\ K$

Final temperature, $T_2=78^{\circ} C=78+273=351\ K$

We need to find the final volume of the gas. The relation between the volume and the temperature is given by :

$\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}\\\\V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{43.1\times 351}{297}\\\\V_2=50.93\ L$

So, the final volume of the gas is 50.93 L.

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2 years ago

dolphi86 [110]

Answer:

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2 years ago

lianna [129]

Explanation:

solution has a pH of 2 is a strong acid.

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2 years ago