Answer:
For a:
![612g=6.12* 10^5mg](https://img.qammunity.org/2020/formulas/chemistry/college/np76nsxx2de4ocvakflrt44e0ugrcxyq2k.png)
For b: 8.160 m = 816.0 cm
For c:
![3779\mu g=3.779* 10^(-3)g](https://img.qammunity.org/2020/formulas/chemistry/college/hchw8lb0ftjk9jvohs3kcts2o6ym0lfx9y.png)
For d: 781 mL = 0.781 L
For e: 4.18 kg = 4180 g
For f: 27.8 m = 0.0278 km
For g:
![0.13mL=1.3* 10^(-4)L](https://img.qammunity.org/2020/formulas/chemistry/college/smcxfh945fglurusqf6n7jata2o3ri9olv.png)
For h:
![1738km=1.738* 10^6m](https://img.qammunity.org/2020/formulas/chemistry/college/cqyiofeulqfbngr2j4po83zb5kjk5q7wt3.png)
For i:
![1.9Gg=1.9* 10^9g](https://img.qammunity.org/2020/formulas/chemistry/college/dz6a6mw16psya29ipso3hdo9pxgq3a35ai.png)
Step-by-step explanation:
Units is defined as the standard which is used to make comparisons between the measurements.
For the given options:
The conversion factor used is:
![1g=1* 10^(3)mg](https://img.qammunity.org/2020/formulas/chemistry/college/4eudd04olacsd1botgzvcd68mm4t0evcvv.png)
So,
![612g* (10^3mg)/(1g)=6.12* 10^5mg](https://img.qammunity.org/2020/formulas/chemistry/college/4enlf1ubvjhvcwazcqw1wr5d036hwxk0o4.png)
The conversion factor used is:
![1m=100cm](https://img.qammunity.org/2020/formulas/mathematics/middle-school/faw99sk23culiq4lmthf3xnwyxeyzzzwnf.png)
So,
![8.160m* (100cm)/(1m)=816.0cm](https://img.qammunity.org/2020/formulas/chemistry/college/tjp8ztdutg30f8milahrufjrjmzb8jvefo.png)
The conversion factor used is:
![1g=1* 10^(6)\mu g](https://img.qammunity.org/2020/formulas/chemistry/college/sro65s01xxyrx6i3kzoejvsvphof3ejmb7.png)
So,
![3779\mu g* (1g)/(10^6\mu g)=3.779* 10^(-3)g](https://img.qammunity.org/2020/formulas/chemistry/college/i2kt2b9wn19y9zz9oti70ra4h8l88gcwc1.png)
The conversion factor used is:
![1L=1000mL](https://img.qammunity.org/2020/formulas/chemistry/college/ryyiv5jbk9hepo8gj8j66z5uep5dn2ijyh.png)
So,
![781mL* (1L)/(1000mL)=0.781L](https://img.qammunity.org/2020/formulas/chemistry/college/ak943qgymmdgxwj7brino2r7ps3sj8llhi.png)
The conversion factor used is:
![1kg=1000g](https://img.qammunity.org/2020/formulas/physics/high-school/fmrpzzk604j9p4gmsk94euv4e5qohc9a8k.png)
So,
![4.18kg* (1000g)/(1kg)=4180g](https://img.qammunity.org/2020/formulas/chemistry/college/36abr6lazodg90v982tyzz5dt50faul3gf.png)
The conversion factor used is:
![1km=1000m](https://img.qammunity.org/2020/formulas/chemistry/college/axjaz5y28it5j2bh9hinyyg9fmvtpd0bx2.png)
So,
![27.8m* (1km)/(1000m)=0.0278km](https://img.qammunity.org/2020/formulas/chemistry/college/uuwugb1zt7xepnleclamu0b00scvwi3vf7.png)
The conversion factor used is:
![1L=1000mL](https://img.qammunity.org/2020/formulas/chemistry/college/ryyiv5jbk9hepo8gj8j66z5uep5dn2ijyh.png)
So,
![0.13mL* (1L)/(1000mL)=1.3* 10^(-4)L](https://img.qammunity.org/2020/formulas/chemistry/college/90ny4nex6f4lcflplfj5fqpmxq8enfnwcm.png)
The conversion factor used is:
![1km=1000m](https://img.qammunity.org/2020/formulas/chemistry/college/axjaz5y28it5j2bh9hinyyg9fmvtpd0bx2.png)
So,
![1738km* (1000m)/(1km)=1.738* 10^6m](https://img.qammunity.org/2020/formulas/chemistry/college/b3buo9kxtjc49l208g86r0im3ga3u9gq3v.png)
The conversion factor used is:
![1Gg=10^9g](https://img.qammunity.org/2020/formulas/chemistry/college/x0b2gw60ttrlerl7jysgesb5b1n6ac24xg.png)
So,
![1.9Gg* (10^9g)/(1Gg)=1.9* 10^9g](https://img.qammunity.org/2020/formulas/chemistry/college/q7lzs03f01476wokwi21sti2hrrt3ycyzz.png)