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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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3. A 4.00 gram sample of solid gold was heated from 274K to 314K. How much energy was involved?
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Which statement is true about the atomic mass?
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Can someone tell me how to do this steps by step<br>How many grams is there in 3.65 moles of CuSO4
Bad White [126]
1. you need a periodic table and find the atomic mass of Cu (copper), S (sulfur) and O (oxygen). The atomic mass is the number in the box that corresponds to the element and have several decimal places.

2. atomic mass of 
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S = 32.065
O = 15.9994

3. Then according to the formula of the compound, you add as many time the atomic mass of each element as subindex in the formula and add all the values together to calculate the molecular mass of the compound in grams.

4. 63.546 g + 32.065 g + ( 4 x <span>15.9994) = 159.609 g

5.  this value </span><span>159.609 g is the mass in grams of one mol of CuSO4

6 the problem is asking not for the mass of one mole but the mass of 3.65 moles of CuSO4

7 then you have the multiply the value of one mol by the number of moles that the problem is asking you

8. </span><span>159.609 g x 3.65 = 582.571 g
</span>
9 the answer to the problem will be
"there are 582.571 g of CuSO4 in 3.65 moles of CuSO4"
 
6 0
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