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vladimir1956 [14]
3 years ago
8

a brick measures 25cm by 12cm by 13cm. What is the volume of the brick in cm cubed? how many milliliters of water would this bri

ck displace?
Chemistry
1 answer:
julia-pushkina [17]3 years ago
5 0
The volume is 3900cm^3 and the bricks density is 3900 ml
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If the natural abundance of Ag-107 is 51.84% what is the abundance of Ag-109?
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Answer:

Explanation:

48.16%

Well, both abundances have to total 100% so is Ag-107 is 51.84%, then Ag-109 must be 100 – 51.84 = 48.16%.

Hope This Helps :)

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Which of the following elements is a transition metal?
GenaCL600 [577]

Answer:

Scandium

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Manganese

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Yttrium

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Explanation:

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5 0
3 years ago
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a strip of impure copper is given to you. how will you purify it by using chemical effects of electric current ?
Oksi-84 [34.3K]

This can be done through electrolysis. Electrolysis is the separation of a substance  into two or more substances that may differ from each other and from the original substance by passing an electric current through a solution that contains ions.

In the case of copper,  we use a  copper (II) sulphate  solution which we put in a large beaker. The impure copper will be used as the positive electrode (anode) and for the negative electrode (cathode)  will be a bar of pure copper.

When the electric current is switched on, the bar of pure copper which is the cathode  increases greatly in size as copper ions leave the anode of impure copper and attach to  the cathode.  The anode becomes smaller and smaller as it loses copper ions until all that is left of it is impurities in form of a sludge beneath it.


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3 years ago
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tino4ka555 [31]

I can describe one prop. of energy: it can not be created or destroyed. It can be transferred, or converted, though.

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What season is represented in the northern hemisphere? *
luda_lava [24]

Answer:

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