Please Help! Biology Lab Homework!?
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can someone please help me convert theses????
240,000 ng = ______mg = ______g
50 cm = ______m = _______m
240,000 ng = ______mg = ______g
50 cm = ______m = _______m
Best AnswerAsker's Choice
1. A nanogram is one billionth of a gram or 1x 10 ^(9) and milligrams are one millionth (10^(3)) so here goes:
0 10^(1) 10^(2) 10^(3) 10^(4) 10^(5) 10^(6) 10^(7) 10^(8) 10^(9)
g dg cm mg   microgram   ng
Each space is a decimal point. Let's count: from ng to mg, 1, 2, 3, 4, 5, 6. Or 9  3 = 6. So move your decimal 6 spaces. Now move another 3 spaces for grams.
240,000 ng = 0.24mg = 0.00024g
2. I'm assuming you want micro(a "u" with a tail) meters for the middle one. Four spaces between cm to micrometer. 9 spaces from micro to kilo, or more easily 3 from cm.
km hm Dm m dm cm mm   micrometer
50 cm = 500,000 micrometers = 0.05km
0 10^(1) 10^(2) 10^(3) 10^(4) 10^(5) 10^(6) 10^(7) 10^(8) 10^(9)
g dg cm mg   microgram   ng
Each space is a decimal point. Let's count: from ng to mg, 1, 2, 3, 4, 5, 6. Or 9  3 = 6. So move your decimal 6 spaces. Now move another 3 spaces for grams.
240,000 ng = 0.24mg = 0.00024g
2. I'm assuming you want micro(a "u" with a tail) meters for the middle one. Four spaces between cm to micrometer. 9 spaces from micro to kilo, or more easily 3 from cm.
km hm Dm m dm cm mm   micrometer
50 cm = 500,000 micrometers = 0.05km
Source:
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And paying attention in science class.
And paying attention in science class.
Other Answers (2)
Rated Highest
10 to the 9 power is nano and 10 to the 3 is milli (mg). There is 6 powers difference between these two so you will move your decimal over 6 times. Since 9 is smaller than 3, you will move your decimal over to the right. Remember...10 to the 9 power is .000000001 and 10 to the 3 power is .001.

There are (one million) 1,000,000ng in 1mg...1 milligram = 0.001 grams...1 centimeter = 0.01 meters...u do the math...or go on google
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