3 years ago

How do alchemy and chemistry differ?

1 answer:

6 0

In very basic terms alchemy is magic and chemistry is scientific.

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Sholpan [36]

Answer:

25.907°C

Explanation:

In Exercise 102, heat capacity of bomb calorimeter is 6.660 kJ/°C

The heat of combustion of benzoic acid is equivalent to the total heat energy released to the bomb calorimeter and water in the calorimeter.

Thus:

$-q_{combust} = q_{water} + q_{calori}$

$q_{combust}$ = heat of combustion of benzoic acid

$q_{water}$ = heat energy released to water

$q_{calori}$ = heat energy released to the calorimeter

Therefore,

$-m_{combust}*H_{combust} = [m_{water}*c_{water} + C_{calori}]*(T_{f} - T_{i})$

1.056*26.42 = [0.987*4.18 + 6.66]( $T_{f}$ - 23.32)

27.8995 = [4.12566+6.660]( $T_{f}$ - 23.32)

( $T_{f}$ - 23.32) = 27.8995/10.7857 = 2.587

$T_{f}$ = 23.32 + 2.587 = 25.907°C

4 0

3 years ago

zmey [24]

It’s a or b i think it’s b

6 0

3 years ago

Luba_88 [7]

Qwesdfgudfdfdess de afefdfsfwrqdetgr

6 0

3 years ago

USPshnik [31]

$mass_{oxygen} = \%mass_{oxygen} \times mass_{compound} \\ m = 63\%(100) \\ m = 0.63(100) \\ m = 63 \: grams$

<h2>Option d</h2>

7 0

1 year ago

arlik [135]

Will be letter E cause all of them can combine molecule

7 0

3 years ago