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3 years ago

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

Chemistry

2 answers:

Phantasy [73]3 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]3 years ago

5 0

Answer: 6,000 m . (or, write as: 6,000 meters).
_______________________________________________________
Explanation:
_________________________________________________
Note the exact conversion: 1 km = 1000 m .
______________________________________________________
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 ;
_______________________________________________
→ = 6,000 m ; or write as: 6,000 meters .
___________________________________________________

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3 years ago

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Harman [31]

Option D

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3 years ago

Why is the classification species not considered a group? (1 point)

vitfil [10]

Each species is a separate type of organism.

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In a group, many types of an organism can be included even if they do not share the same traits. But species is a group of organisms that share similar traits.
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6 0

1 year ago

A solution is prepared by adding 0.0231moles of H3O+ ions to 3.33L of water. What is the pH of this solution

MrMuchimi

Answer:

2.15

Explanation:

For this question, we have to remember the pH formula:

$pH~=~-Log[H_3O^+]$

By definition, the pH value is calculated when we do the -Log of the concentration of the hydronium ions ( $H_3O^+$ ). So, the next step is the calculation of the concentration of the hydronium ions. For this, we have to use the molarity formula:

$M=\frac{mol}{L}$

We already know the number of moles (0.0231 moles) and the volume (3.33 L). So, we can plug the values into the molarity formula:

$M=\frac{0.0231~moles}{3.33~L}=0.00693~M$

With this value, now we can calculate the pH value:

$pH~=~-Log[0.00693~M]~=~2.15$

The pH would be 2.15

I hope it helps!

8 0

3 years ago