3 years ago

HELP IM BEING TIMED: btw its science im just putting some thing random

Chemistry

1 answer:

neonofarm [45]3 years ago

4 0

Answer:

I thinks something bad will happen but science can change so im not sure

Explanation:

Science changes because of diffrent thing like enviorment

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Cloud [144]

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What is the pH of a solution with a H+ ion of 2×10-¹²?

kap26 [50]

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3 years ago

1. (8pt) Using dimensional analysis convert 600.0 calories into kilojoules

Ivanshal [37]

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1. 2.510kJ

2. Q = 1.5 kJ

Explanation:

Hello there!

In this case, according to the given information for this calorimetry problem, we can proceed as follows:

1. Here, we consider the following equivalence statement for converting from calories to joules and from joules to kilojoules:

$1cal=4.184J\\\\1kJ=1000J$

Then, we perform the conversion as follows:

$600.0cal*\frac{4.184J}{1cal}*\frac{1kJ}{1000J}=2.510kJ$

2. Here, we use the general heat equation:

$Q=mC(T_2-T_1)$

And we plug in the given mass, specific heat and initial and final temperature to obtain:

$Q=236g*0.24\frac{J}{g\°C} (34.9\°C-8.5\°C)\\\\Q=1495.3J*\frac{1kJ}{1000J} \\\\Q=1.5kJ$

Regards!

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2 years ago

4 Infer is the reaction below possible?

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