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Question 6-10,300,000 J7,590,000 J8,950,000 J-7,590,000 J10,300,000 J Question 7Salt waterThe Earth's oceans

A 55.0 kg object with a heat capacity of 730. J/(kg·oC) has an initial temperature of 223 oC, calculate the heat when its final temperature reaches 34.0 oC.

Which of the following is a pure substance?

Deionized water


Tap water


Carbonated water

 

Question 8


Classify the type of matter for urine.


A homogeneous solution.


A pure liquid.


A pure solution.


A liquid made of a pure compound.


A heterogeneous solution.

 

Question 9


A method for separating a mixture of alcohol and water would be:


Alcohol and water cannot be separated


An initial physical process followed by a chemical reaction


An initial chemical reaction followed by a physical process


Chemical reaction


Physical process


Question 10


Define matter ?


Anything with mass, volume and charge.


Anything with mass and volume.


Anything that is physically tangible.


Anything with mass.


Anything with volume.

Step-by-step answer

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Subject: Chemistry, Science

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