## anonymous one year ago 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

1. anonymous

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

2. anonymous

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

3. anonymous

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

4. anonymous

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

5. anonymous

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

6. 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.

7. anonymous

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

8. anonymous

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

9. anonymous

Read what I wrote above to convert amu to grams.

10. anonymous

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

11. anonymous

1amu=1g

12. anonymous

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

13. 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

14. anonymous

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

15. anonymous

How much kg is in 1g then?

16. anonymous

.001kg

17. anonymous

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

18. anonymous

Now solve it!

19. anonymous

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

20. anonymous

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

21. anonymous

3.0 x 10^-10m

22. anonymous

Dont forget units 0.123 kg is correct!

23. anonymous

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

24. anonymous

Because I put 1.23 x 10^-1

25. anonymous

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

26. anonymous

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

27. anonymous

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