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rewona [7]
3 years ago
15

Formula unit of Magnesium oxide and Calcium bicarbonate and aluminum carbonate plzzzz​

Chemistry
1 answer:
Fudgin [204]3 years ago
5 0

Magnesium oxide : MgO

Calcium bicarbonate:  Ca(HCO3)2

aluminum carbonate: Al2(CO3)3 or C3Al2O9

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kondaur [170]
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4 0
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Hi can someone help me quickly please its for chemistry
lara [203]

Answer:

Explanation:

The atom X has 1 1 protons (atomic number) and thus would have 11 electrons. This means the atom X would have 1 valence electron in it's outermost shell. While the atom Y has 17 protons (atomic number) and thus would have 17 electrons. This means the atom Y would have 7 electrons in it's outermost shell.

The type of bond this atoms (X and Y) would form is an Ionic (or electrovalent) bond. <u>This bond/combination involves the transfer of electron(s) and a molecule is not formed</u> as seen in the image below.

3 0
3 years ago
Convert 7.2 x 10^-5 from scientific notation into standard notation
Ghella [55]

Answer:

720 000

Explanation:

7.2

×

10

5

is already expressed in

standard form

I believe you mean express as

original number

To do this consider

10

5

or more generally

10

n

where n is an integer.

• If n > 0

move decimal point n places to the right

• If n < 0

move decimal point n places to the left

here n = 5 > 0, hence move decimal point 5 places to the right.

⇒

7

∙

2

→

720000

∙

⇒

7.2

×

10

5

=

720

000

Explanation:

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4 years ago
Does the boiling point of a liquid depend of the amount of liquid
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A liquid boils at a temperature at which its vapor pressure is equal to the pressure of the gas above it. The lower the pressure of a gas above a liquid, the lower the temperature at which the liquid will boil. Boiling point represents a phase change of matter. So no, the boiling poibt of a liquid does not depend on the amount of liquid
5 0
4 years ago
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