Just took the test
It's B = original battery, thinner wire
The substance that can be broken down by chemical means from the choices given is CO (Carbon monoxide). Carbon monoxide is a compound made up of carbon and oxygen and can therefore be broken by chemical means.
Answer:
0.3 mol A is combined with 0.8 mol B.
Explanation:
Limiting reagent in a chemical reaction is defined as the reagent that is totally consumed when the chemical reaction is complete.
In the reaction:
A + 2B → 2C+D
For a reaction of 1 mole of A, you need two moles of B. That means for any quantity of A you need twice this quantity in B.
Thus, <em>A is limiting reagent when moles of B are higher than twice moles of A.</em>
* 0.5 mol A is combined with 0.3 mol B. Twice moles of A are 1.0 moles that are higher than 0.3 moles. <em>A is not limitng reagent.</em>
* 0.5 mol A is combined with 0.6 mol B. Twice moles of A are 1.0 moles that are higher than 0.6 moles. <em>A is not limitng reagent.</em>
* 0.2 mol A is combined with 0.3 mol B. Twice moles of A are 0.4 moles that are higher than 0.3 moles. <em>A is not limitng reagent.</em>
* 0.3 mol A is combined with 0.8 mol B. Twice moles of A are 0.6 moles that are lower than 0.8 moles. <em>A IS limitng reagent.</em>
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I hope it helps!
Answer:
Moles= 10.55*10^29ǜ.02*10^23
=1.75*10^6 moles
Moles= mass/molar mass
1.75*10^6=mass/ 183
Mass= 320*10^6 g
The answer is a the same group or families because when they are in the same family there characteristics are very alike