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Karo-lina-s [1.5K]
2 years ago
14

The coefficients in a chemical equation??

Chemistry
1 answer:
cricket20 [7]2 years ago
3 0
D is the answer I believe.
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What is carbon sink and how it effects our environment?
Ronch [10]

Answer:

Explanation:

Carbon sink is basically anything that absorbs carbon from the atmosphere.   Particularly, the soil, trees, plants and the ocean absorb the most carbon, which helps with greenhouse emission.

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2 years ago
Why foodstuff with acid components should not be stored in aluminium containers why?​
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Hey dear, foodstuff with acid components should not be stored in aluminum utensils because Aluminum is one of the most reactive metal which can easily react with acid to form toxic substances which can effect our health .

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3 years ago
Which is larger CA or CA2+ and why?
Vika [28.1K]
Ca because it has a larger atomic radius.
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3 years ago
The most reactive metals are located in which area of the periodic table?
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8 0
3 years ago
7. How many formula units are equal to a 0.25 g sample of Chromium (III) sulfate,
ryzh [129]

Answer:

38.541 × 10¹⁹ formula units

Explanation:

Given data:

Mass of chromium sulfate = 0.25 g

Formula units in 0.25 g = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ formula units of water

Number of moles of chromium sulfate =  Mass / molar mass

Number of moles of chromium sulfate = 0.25 g/ 392.16 g/ mol

Number of moles of chromium sulfate = 6.4 × 10⁻⁴ moles

Number of formula units:

1 mole = 6.022 × 10²³ formula units

6.4 × 10⁻⁴ moles × 6.022 × 10²³ formula units / 1 mol

38.541 × 10¹⁹ formula units

7 0
3 years ago
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