Answer:
a)decrease
b)increase
c)smaller
d)smaller
Explanation:
Ionization energy decreases down the group due to increase in the atomic radius. The distance between the outermost electron and the nucleus increases hence the nuclear attraction for the outermost electrons become smaller and the ionization energy also become smaller as electrons are now easily removed from the outermost shell.
Hence the group of answer choices provided above.
Now, i might be wrong but, you have to make a hypotosis of possible theories as to what the truck is doing. Then observe what changes were made after the salt was added then the question should be why was the salt added and how it changed the area. I hope this helps!
Answer:
<u>1 mole of Fe and 1.5 moles of CO2</u>
Explanation:
<u>Fe2O3 + CO → Fe + CO2</u>
This is a trick question. The equation is not balanced properly. To start, note that one molecule of Fe2O3 contain 2 Fe atoms, while there is only 1 Fe atom on the product side. And the oxygens are also missing (from 4 to 2). We cannot use this equation, as written.
Here's one that is balanced:
<h2><u>
Fe2CO3 + 3CO = 2Fe + 3CO2</u></h2>
<u>I'll use this one to answer the question.</u>
1. <u>If 3 moles of Fe2O3 react with 1.5 moles of CO, how many moles of each product are formed?</u>
The balanced equation tells us that 1 mole of Fe2O3 will react with 3 moles CO to produce 2 moles of Fe and 3 moles of CO2. <u><em>If we had enough CO</em></u>, 3 moles Fe2O3 will produce 6 moles of Fe and 9 moles of CO2. But note that we'd also need 9 moles of CO for a complete reaction. We only have 1.5 moles, probably due to Stanley, our new manager. So we're limited by the CO, and we'll have to delete our first analysis and work from 1.5 moles of CO.
<h2>
If we have 1.5 moles CO, we'll produce:</h2><h2>
<u>
1 mole of Fe and 1.5 moles CO2.</u></h2>
