Answer:
A
Explanation:
because chemical change is permanet.
Divide the grams by 25 to 195 then times it in decimal
Answer:
The periodic table is arranged by atomic weight and valence electrons. These variables allowed Mendeleev to place each element in a certain row (called a period) and column (called a group). The table comprises seven rows and 18 columns
Explanation:
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So we know from the balanced equation that in order for one entire reaction to occur, we need 2 moles of Al and 6 moles of HCl.
We are given 6.0 moles of Al, so let's divide by the amount we need for one reaction:
And we are given 13.0 moles of HCl. So let's divide this amount by how much we need for one reaction:
So we know that this amount of HCl will give us less reactions, and therefore it is our limiting reactant. Now we must find the number of moles of that are produced with 13 moles of HCl.
We know that the molar ratio of HCl to is 6:3 in the balanced equation, so we can set up a proportion in order to find this new amount of that is produced:
And now we solve for x:
So now we know that 6.5 moles of will be produced.
Therefore, our answer is B) HCl is the limiting reactant, 6.5 moles of can be formed.