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Lera25 [3.4K]
3 years ago
8

If an atom has six electrons how many protons does it have

Chemistry
1 answer:
Sergio039 [100]3 years ago
7 0
6 protons it have to be neutral 
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The gas carbon dioxide is a pure substance. Which of the following is true about carbon dioxide
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Why is pressure on Jupiter enormous?
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When a current is passed through a solution of salt water, sodium chloride decomposes according to the following reaction:
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Given the following reaction:
igor_vitrenko [27]

Answer : 21.12 g

explanation :

- A limiting reactant is the substance that is totally consumed when the chemical reaction is complete and the reaction cannot continue without it.

- This is a limiting reactant problem because the amount of product (CO2) formed is limited by this substance (either O2 or C3H8).

- We can predict the limiting reactant by calculating number of mole for all reactants;

      n (C3H8) = mass/ molar mass = 7/[(12 × 3)+(1 ×8)] = 0.16 mol

      n (O2) = mass/ molar mass = 98/(16 × 2) = 3 mol

But we know from this balanced equation that for the reaction to continue, for (n) of propane there must be (5n) of oxygen. Clearly we have more oxygen than required for the reaction to continue as

[ 3 O2 mol >  (0.16 propane mol × 5) . Hence, the limiting reactant is propane.

- Using cross multiplication,

                0.16 mol propane    →        1 mol propane

                            ?                    →        3 mol CO2

So (n) of CO2 produced = 0.16 × 3 / 1 = 0.48 mol  ,

And mass of CO2 produced = n × molar mass = 0.48 × [12 + (16 ×2)] = 21.12 g..


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3 years ago
How many moles of bromine are needed to produce 5 moles of aluminum bromide
Verdich [7]

Answer:

7.5 mol

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2Al + 3Br₂ ⟶ 2AlBr₃

You want to convert moles of AlBr₃ to moles of Br₂.

The molar ratio is 3 mol Br₂:2 mol AlBr₃.

Moles of Br₂ = 5 × 3/2

Moles of Br₂ = 7.5 mol Br₂

You need 7.5 mol of Br₂ to produce 5 mol of AlBr₃.

4 0
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