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2 years ago

You live 6 kilometers from your school. How many meters do you live from school?

Chemistry

2 answers:

Phantasy [73]2 years ago

7 0

1000 m = 1 km
so if you have 6 km you have 1000×6= 6000m
So you live 6000m from school

Snezhnost [94]2 years ago

5 0

Answer: 6,000 m . (or, write as: 6,000 meters).
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Explanation:
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Note the exact conversion: 1 km = 1000 m .
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Note: "km" is an abbreviated form of "kilometer(s)".
"m" is an abbreviated form of "meter(s)".
______________________________________________________
Here is one way to solve, using a method called "dimensional analysis":
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Given: 6 km ; convert to "m" ;
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→ 6 km = ? m ;
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 → 6 km * $\frac{1000 m}{1 km}$ = ? m ;
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→ On the "left-hand side" of the equation, the units of "km" "cancel out" to "1" ; and we are left with:
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→ 6 * $\frac{1000 m}{1$ = ? m ;
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.→ 6 * 1000 m = ? m ;
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→ = 6,000 m ; or write as: 6,000 meters .
___________________________________________________

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We can use the following relation:

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Read 2 more answers

The combustion of gasoline produces carbon dioxide and water. Assume gasoline to be pure octane (C8H18) and calculate the mass (

Mariulka [41]

Answer:

3.09kg

Explanation:

First, let us write a balanced equation for the reaction. This is illustrated below:

2C8H18 + 25O2 —> 16CO2 + 18H2O

Molar Mass of C8H18 = (12x8) + (18x1) = 96 + 18 = 114g/mol

Mass of C8H18 from the balanced equation = 2 x 114 = 228g

Converting 228g of C8H18 to kg, we obtained:

228/1000 = 0.228kg

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Mass of CO2 from the balanced equation = 16 x 44 = 704g

Converting 704g of CO2 to kg, we obtained:

704/1000 = 0.704kg

From the equation,

0.228kg of C8H18 produced 0.704kg of CO2.

Therefore, 1kg of C8H18 will produce = 0.704/0.228 = 3.09kg of CO2

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