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quester [9]
3 years ago
12

What is a substances heat capacity?

Chemistry
1 answer:
Phantasy [73]3 years ago
6 0

Also called thermal capacity, is when the amount of heat required to raise the temp. of one mole or one gram of a substance by one degree Celsius without change of phase.


Hope this helps :)

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The ph of a solution containing 0.818 M acetic acid<br> (ka1.76*10-5) ans 0.172 M sodium acetate is?
kvasek [131]

Explanation:

It is known that the relation between pH and pK_{a} is as follows.

              pH = pK_{a} + log \frac{[salt]}{[acid]}

and,     pK_{a} = -log K_{a}

Hence, first we will calculate the value of pK_{a} as follows.

                   pK_{a} = -log K_{a}

                               = -log (1.76 \times 10^{-5}

                               = 4.75

Now, we will calculate the value of pH as follows.

              pH = pK_{a} + log \frac{[\text{sodium acetate}]}{\text{acetic acid}}

                    = 4.75 + log \frac{0.172}{0.818}      

                    = 4.75 + (-0.677)

                    = 4.07

Therefore, we can conclude that the pH of given solution is 4.07.

5 0
3 years ago
PLEASE HELP THIS IS DUE TODAY
stepan [7]

Answer:

94.99%

Explanation:

4 0
2 years ago
Which kingdom contains both unicellular and multicellular eukaryotic organisms?
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The answer is B). Fungi

I’m sorry if this is wrong but I’m pretty sure it’s not
4 0
2 years ago
Which of the following is a quantitative observation of the frog?
Nataliya [291]
Quantitative means to count how many of something. The correct answer is B, It has two eyes. Hope this helps
6 0
3 years ago
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When you breathe the first step is that your lungs expand. why is this step needed
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Answer:

When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.

Explanation:

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3 years ago
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