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Olin [163]
3 years ago
10

10 To become positively charged, an atom must: A Galn a proton B Lose a proton C С. Galn an electron D Lose an electron } ​

Chemistry
1 answer:
Studentka2010 [4]3 years ago
6 0

Answer:

D: lose an electron

Explanation:

when an atom loses an electron it's positively charged and when it gain an electron it is negatively charged

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How many grams do 3.6 x10^20 atoms of silicon weigh?
creativ13 [48]
First, we divide the number of atoms of silicon given in the problem above by Avogadro's number 6.6022 x10^23. This will give us the number of moles of silicon. Then, we multiply the number of moles by the molar mass of silicon. 
number of moles = (3.6 x 10^20 atoms/6.022x10^23 atoms) = 5.97x10^-4 moles
Then, multiplying by the molar mass
                  (5.97x10^-4 moles)(28.0855 g/mol) = 0.017 grams
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2 years ago
How many unshared electron pairs are present in KrF2
marin [14]
<span>Kr has 8 valence electrons plus 1 for each Kr-F single bond. Total = 10 elcetrons
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5 0
3 years ago
Describe the difference between intensive and extensive propoerties. Which of the following propoerties are intensive: (a) mass;
STatiana [176]

Answer:

The properties <u>that </u><u>do not vary</u><u> with the variation in the quantity of the material are called as </u><u>intensive property</u>.

While the <u>extensive properties</u><u> are those which </u><u>vary with the variation in the quantity of the material</u>.

Intensive properties:

Mass and volume

Extensive properties:

Density and melting point

Explanation:

The properties <u>that </u><u>do not vary</u><u> with the variation in the quantity of the material are called as </u><u>intensive property</u>.

While the <u>extensive properties</u><u> are those which </u><u>vary with the variation in the quantity of the material</u>.

Intensive properties:

Mass and volume, as with increase in quantity of the material mass and volume increases.

Extensive properties:

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4 0
3 years ago
Draw the Lewis structure for sulfur tetrafluoride, SF4
Vlad [161]

Notes:-

  • S has Z=16

Electronic configuration

  • 1s²2s²2p⁶3s²3p⁴

So

  • Valency is 4 and 6

  • Three fluorine atoms take 3 electrons and one lone pair present over S
  • As one electron remains unshared so we use + sign .

6 0
2 years ago
A thermometer is placed in water in order to measure the water’s temperature. What would cause the liquid in the thermometer to
dalvyx [7]

Answer : Option B) The molecules in the thermometer’s liquid spread apart.


Explanation : When a thermometer was placed in water to measure the water’s temperature. the molecules in the thermometer liquid which is often mercury spreads apart and rises, this shows a temperature increase in the thermometer.

3 0
3 years ago
Read 2 more answers
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