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Wittaler [7]
3 years ago
12

A. Metal ion can be pushed out of position B. Metal form covalent bond C. Metals are brittle

Chemistry
1 answer:
guapka [62]3 years ago
4 0
The answer is A.  Good Luck!
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The process in which the nucleus of an atom splits into two lighter atoms, releasing a large amount of energy, is nuclear .
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It's nuclear fission

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What is the molar mass of CaCl2?
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Answer: The molar mass of the given compound is 1.11\times 10^2 g/mol

Explanation:

In molecular formula of CaCl_2 there are two chlorine atoms and one calcium atom.

The atomic mass of the calcium = 40.07 g/mol

The atomic mass of chlorine = 35.5 g/mol

Molar mass of the guven compound is :

40.07 g/mol + 2\times 35.5 g/mol=111.07 g/mol\approx 1.11\times 10^2 g/mol

The molar mass of the given compound is 1.11\times 10^2 g/mol

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Prepare 15 mg/dl working standard solution from a stock solution of 20 mg/dl. State the volume of diluent and dilution.
Anastasy [175]

Preparing 15 mg/gl working standard solution from a 20 mg/dl stock solution will require the application of the dilution principle.

Recalling the principle:

initial volume x initial molarity = final volume x final molarity

Since we were not given any volume to work with, we can as well just take an arbitrary volume to be prepared. Let's assume that the stock solution is 10 mL and we want to prepare 15 mg/gl from it:

Applying the dilution principle:

10 x 20 = final volume x 15

final volume = 200/15

                       = 13.33 mL

This means that in order to prepare 13.33 mL, 15 mg/l working standard solution from 10 ml, 20 mg/dl stock solution, 3.33 mL of the diluent must be added to the stock solution.

More on dilution principle can be found here: brainly.com/question/11493179

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How does one's lifestyle contribute to the increase in atmospheric CO2 concentration? ​
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It contributes by breathing. CO2 is carbon dioxide we breath it out and plants convert it into oxygen.

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