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Scorpion4ik [409]
3 years ago
14

platinum is used as a catalyst to break down harmful gases in car exhaust into less harmful gases. Which statement best describe

s platinum in this use
Chemistry
1 answer:
kicyunya [14]3 years ago
7 0
The platinum catalyst is intended for decrease the toxicity of combustion gases.
2CO + O₂ = CO₂
2NO = N₂ + O₂
2NO₂ = N₂ + 2O₂
But at the same time the carbon dioxide - greenhouse gas is formed.
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What properties do atoms of the same element share? Select all that apply.
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It is necessary to have a 40% antifreeze solution in the radiator of a certain car. the radiator now has 70 liters of 20% soluti
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The answer is : 17.5 liters drained and replaced by 17.5 liters of 100% solution. 
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3 years ago
Find the empirical formula of the compound ribose, a simple sugar often used as a nutritional supplement. A 14.229 g sample of r
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Firstly, we need to convert the masses of the elements to percentage compositions. This can be done by placing the mass of each element over the total mass multiplied by 100% . We can start with carbon.

C = 5.692/14.229 * 100 = 40%

O = 7.582/14.229 * 100 = 53.29%

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We then proceed to divide each percentage composition by their atomic mass of 12, 16 and 1 respectively.

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Dividing by the smaller value which is 3.33

C = 3.33/3.33 = 1

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The empirical formula of the compound ribose is CH2O

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