## unit conersations

josmit_1D
Posts: 92
Joined: Fri Aug 09, 2019 12:17 am

### unit conersations

how do you know when you have to convert from a smaller unit picometers to a larger unit like meters?

Althea Zhao 1B
Posts: 85
Joined: Mon Jun 17, 2019 7:24 am

### Re: unit conersations

For the problem you're referencing, Dr. Lavelle said either unit is fine. I think you don't need to convert unless explicitly asked.

Clarice Chui 2C
Posts: 86
Joined: Fri Aug 30, 2019 12:16 am

### Re: unit conersations

As long as you remain consistent with units throughout your work and the problem doesn't explicitly ask for a specific unit of measure, it shouldn't matter.

chemboi
Posts: 83
Joined: Sat Jul 20, 2019 12:16 am

### Re: unit conersations

Some calculations, such as those regarding wavelength, operate with units of meters, so watch out for those. In that case, if you are given some measure in centimeters, convert that value to meters to then use in your calculation.

lilymayek_1E
Posts: 84
Joined: Sat Aug 17, 2019 12:16 am

### Re: unit conersations

typically in problems they give compounds/etc in the standard units, they expect to be calculated in those respective units. Unless you know that those units are not standard for the certain object, then you may have to convert. they should be given most of the time though.

805291863
Posts: 85
Joined: Sat Sep 14, 2019 12:16 am

### Re: unit conersations

If the units of a given value don't match with the units of a conversion factor (e.g. molar mass) or are different from the units of the answer you are looking for, definitely convert your units

Anna Chen 1K
Posts: 84
Joined: Thu Jul 25, 2019 12:18 am

### Re: unit conersations

You should convert from a smaller unit to a larger unit when the value you are looking for in your answer requires a larger unit but the given value in the question came in the smaller unit. For example, when looking for mass, you should write your answer in grams, which means you would need to convert a given value in milligrams.

705379941
Posts: 52
Joined: Fri Aug 30, 2019 12:16 am

### Re: unit conersations

i believe only if the problem asks for meters