Sunday

March 1, 2015

March 1, 2015

Posted by **Bryan** on Thursday, January 25, 2007 at 3:41pm.

1)How would you calculate the number of nanometers in 8.1 cm?

2)What is the equivalent of 0.35 lb in grams?

You need to learn to do deimensional analysis. It's easy.

0.35 lb to grams

We know there are 453.6 g in a lb. We take the given (0.35 lb) and multiply by a conversion factor. The factor is either 453.6 g/1 lb or 1 lb/453.6 g.

0.35 lb x factor = ??

Now all we need to do is determine which of the two factors to use? That's easy, too. We arrange the factor so the unit we don't want to keep (lbs in this case) cancels and grams is what is left.

0.35 lb x (453.6 g/lb) = ?? grams.

Note that we place lb of the factor in the denominator so that it will cancel with the given (lb in this case) and it leave g from the factor to go with the numerical value of the answer.

There are 1 x 10^7 nm in 1 cm.

given (8.1 cm) x factor.

8.1 cm x (1 x 10^7 nm/cm) = ??

Again, the cm unit cancels (that's the one we don't want to keep) but we leave the nm of the factor, so the answer is 8.1 x 10^7 nm.

This is a simple process and we need not make it complicated.

- Chemistry -
**angel**, Thursday, September 24, 2009 at 6:00pma scientist has 0.46 mL of a solution. how would she convert this volume to microliters?

- Chemistry -
**What's it to yah**, Thursday, December 12, 2013 at 5:56pmNuts on yo head

**Answer this Question**

**Related Questions**

Chemistry - Posted by Angeline on Monday, April 20, 2009 at 5:35pm. A few ...

Chemistry/stoichiometry - For the reaction shown, calculate how many moles of ...

Chemistry - (1.00 x 10^5)NM - (3.96 x 10^3) NM = ? I think that since they're ...

chemistry - Calculate the theoretical yield in moles of Fe(C5H7O2)3 for this ...

Chemistry - Calculate the theoretical yield in moles of Fe(C5H7O2)3 for this ...

Chemistry - Calculate the number of grams of water produced from 30 g of oxygen ...

chemistry - How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq...

Math - I'm having trouble understanding equivalent fractions. I'm getting ...

Chemistry(Please help, thank you!) - For a chemistry lab the experiment was to ...

chemistry - Atomic hydrogen produces well-known series of spectral lines in ...