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Dominik [7]
3 years ago
12

How many atoms of group one would react with one atom of group five?

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
7 0
Group 1 elements are comprised of: (1) hydrogen, sodium, lithium, potassium, rubidium, caesium, and francium. The tendency of these atoms is to lose one of their electrons such that they become charge +1. 

Group 5 elements contains the vanadium, niobium, tantalum, and dubnium. It is quite hard to predict the oxidation number of these elements such that it will be hard to determine the number of atoms needed to react with them. Their valence electron is 5, and they react by losing them. Hence, in order to reach the octet rule, 3 group 1 elements should be reacted. 
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C) 10 - 13 = \fbox {-3}

D) -18 - (-5) = \fbox {-13}

You were correct, the exact answer is A. The others do not equal 23 besides that one. Good job!
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ladessa [460]
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2 years ago
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Define a variable write an equation and solve the problem. the width of a rectangle is 3 meters more than one-fourth its length.
sweet [91]

Let's assume

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width of rectangle is W

the width of a rectangle is 3 meters more than one-fourth its length

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W=3+\frac{1}{4} L

the perimeter is 10 meters more than twice its length

we know that

perimeter =2(L+W)

so, we get

2(L+W)=10+2L

now, we can simplify it

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subtract both sides by 2L

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2W=10

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now, we can find L

5=3+\frac{1}{4} L

subtract both sides 3

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multiply both sides by 4

4*2=4*\frac{1}{4} L

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so,

length of rectangle is 8 meter

width of rectangle is 5 meter ............Answer

4 0
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ehidna [41]

Answer:

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Step-by-step explanation:

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