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Anna35 [415]
2 years ago
9

Sphalerite contains about 30% zinc. Calculate the maximum amount of zinc that could be obtained from 1000kg sphalerite.

Chemistry
1 answer:
melisa1 [442]2 years ago
3 0

Answer:

300kg

Explanation: The question says about 30%, so I think it is 300kg

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2 years ago
The elements silicon (atomic number 14) and chlorine (atomic number 17) are both in Period 3. Which is the more reactive element
Svetlanka [38]

Answer;

-Chlorine is more reactive than silicon

Explanation;

-As you move across a period, the nuclear charge will increase; the number of energy levels will stay the same, so there is a stronger and stronger attraction for the electrons.

-The electrons are being held more tightly as you move across a period. It becomes more and more difficult to lose electrons and consequently the reactivity of non metals increases as you go from left to right across the periodic table; Therefore; chlorine is more reactive than silicon.

5 0
3 years ago
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How many atoms are in the 3.5 moles of arsenic atoms?
Dmitry_Shevchenko [17]
Number of atom in one mole = 6.022 × 10²³
So, in 3.5 moles, it would be: = 6.022 × 10²³ * 3.5 = 2.1 × 10²⁴

In short, Your Answer would be 2.1 × 10²⁴ atoms

Hope this helps!
6 0
2 years ago
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The purpose of an incline plane is to reduce which of the following?
MA_775_DIABLO [31]
The purpose of an inclined plane is to reduce force.
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