Carry out the following conversions. Enter your answers in scientific notation.
(a) 238 amu to grams
(b) 123 amu to kilograms
(c) 3.07 A to meters
(d) 1.67 A to nanometers

- anonymous

- chestercat

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- anonymous

a) amu is in grams
b)1000g=1kg
c) 1A= is 1.0x10^-10m
d) 1A=0.1nm

- anonymous

How exactly would you convert these? Can you show me?

- anonymous

amu=atomic mass.
atomic mass is in grams
therefore amu=grams

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## More answers

- anonymous

What about the math portion? That is what I am confused about.

- anonymous

Example: if p=4n
and you want to figure out how many n are in 5p, then you would multiply 5*4n=20n

- anonymous

|dw:1441070485841:dw|
When multiply conversion makes the sure the denominator is equal to the numerator.
You would cancel the units you are given to find the new amount of the new unit.

- anonymous

So what numbers would you put where? Would the 123 amu go first as 5p

- anonymous

No, this just an example.
5p is not involved.

- anonymous

Read what I wrote above to convert amu to grams.

- anonymous

I get that 123 amu * (?/1 amu)

- anonymous

1amu=1g

- anonymous

Read what I wrote above please.
If you do not understand what i wrote above, ask me.

- anonymous

Okay I read what you said again and I think I got it? I put 123 amu x (1g/ 1 amu) x ( 1000kg/ 1g) =123000

- anonymous

1000g=1kg
so 1g does not equal 1000 kg

- anonymous

How much kg is in 1g then?

- anonymous

.001kg

- anonymous

You do this with a calculator and conversion.
|dw:1441072287713:dw|

- anonymous

Now solve it!

- anonymous

Sorry. I'm still not doing it right. I got .123 somehow.

- anonymous

Got to go in like 5min.
I will do the third example for you.
|dw:1441072497536:dw|

- anonymous

3.0 x 10^-10m

- anonymous

Dont forget units
0.123 kg is correct!

- anonymous

Oh. Okay. Maybe I'm doing the scientific notation wrong on it then. I thought the math was wrong.

- anonymous

Because I put 1.23 x 10^-1

- anonymous

I skipped to d since b is giving me such a hard time and got 1.67 x 10^-1 as my answer.

- anonymous

Thanks for the help. I got the answer for the b.

- anonymous

b is 0.123 kg is correct!
You got it correct.

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