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marusya05 [52]
3 years ago
13

A pure substance that cannot be broken down into any other substance by a physical or chemical means is a (n) ______

Chemistry
2 answers:
natita [175]3 years ago
7 0
The answer is an Element
evablogger [386]3 years ago
3 0
An element cannot be broken down into any other substance by physical or chemical means.
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Using the following equation for the combustion of octane calculate the heat associated with the formation of 100.0 g of carbon
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Answer:

The right solution is "-602.69 KJ heat".

Explanation:

According to the question,

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We know that 16 moles of CO_2 formation associates with -11018 kJ of heat, then

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3 years ago
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2 years ago
Which of the following is a testable hypothesis?
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6 0
3 years ago
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​If 250.0 mL of a 0.96 M solution of acetic acid (C 2H 4O 2) are diluted to 800.0 mL, what will be the approximate molarity of t
adoni [48]

Answer:

0.30M HOAc

Explanation:

Given 250.0ml (0.96M HOAc) => 800ml(??M HOAc)

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(0.96M)(250.0ml) = (Molarity diluted soln)(800ml)

Molarity diluted soln = (0.96M)(250.0ml)/(800ml) = 0.30M HOAc

7 0
3 years ago
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