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olga2289 [7]
3 years ago
8

What three major chemical reactions drove the reduction of co2 in the atmosphere?

Chemistry
1 answer:
satela [25.4K]3 years ago
5 0
No...............................................
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Why is potassium placed in the periodic table where it is?
Virty [35]
Potassium is placed where it is based on its properties and it's reactivity. It's also placed there based on it's atomic number. 
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3 years ago
What is the percent concentration of a 250 ml solution with 0.120 g nacl?
Effectus [21]
0.048 percent is the answer
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3 years ago
A compound is 44.82% Potassium, 18.39% Sulfur, and 36.79% Oxygen. Write the empirical formula and name the compound.
sleet_krkn [62]

Answer:

Empirical formula = K₂SO₄

The name of the compound is Potassium tetraoxosulfate (vi)

Explanation:

Percentage composition of the elements:

Potassium = 44.82%

Sulfur = 18.39%

Oxygen = 36.79%

Mole ratio of the elements:

Potassium = 44.82/39 =1.15

Sulfur = 18.39/32 = 0.57

Oxygen = 36.79/16 = 2.29

Dividing by the smallest ratio in order to obtain the simplest ratio

Potassium = 1.15/0.57 =2

Sulfur = 0.57/0.57 = 1

Oxygen = 2.29/0.57 = 4

Therefore, the mole ratio of Potassium : Sulfur : Oxygen = 2:1:4

Empirical formula = K₂SO₄

The name of the compound is Potassium tetraoxosulfate (vi)

5 0
2 years ago
If an object that stands 3 centimeters high is placed 12 centimeters in front of a plane mirror, how far from the mirror is the
ryzh [129]

Answer:

the mirror is 12 cm away from the image

Explanation:

; the image will be virtual and it will form at 12 cm distance behind the mirror.

7 0
3 years ago
A fixed mass of gass occupies a volume of 200cm at 21°c calculate it's volume at standard temperature
elena55 [62]
The answer is in the attachment below:

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