# Math

75 mg of salt is equivalent to how many grams of salt?

They got 0.075. How did they arrive at that answer?

A milogram (mg) is 1/1000 of a gram. In other words, each gram contains 1000 milograms.

To convert from mg to grams, divide the mg by 1000. In this problem, you move the decimal point three places to the left to multiply by 1000.

Sorry. I don't understand. You are going to have to break it down for me or is there a website you can direct me to to better help me out?

Please hold on a few minutes while I think of a better way of explaining it.

I didn't find a good website, even after I spelled milligram correctly.

Grams and milligrams are units of weight. For example, a granola bar weighs about 20 grams. Since there are 1,000 mg in a gram, each bar weighs about 20,000 mg -- and each mg is about the size of a tiny crumb that you probably couldn't even see.

To get back to your problem -- of 75 mg. Obviously that's a very small amount and is usually only used in scientific measurements. If you divide 75 by 1000 on a calculator, you'll get .075. (If this were money, .075 would be 7 1/2 cents compared with \$1.00.)

A faster way of dividing by 1000 is to move the decimal point three places to the right.

75 mg = .075 g.

1. 👍 0
2. 👎 0
3. 👁 119

## Similar Questions

1. ### IR chemistry - instrumental anaylsis

my last instrumental analysis lab was basically about becoming familiar with using an IR spectrometer. I used a salt solution with a sodium chloride salt plate although it was not stated in the procedure to do so. the IR spectra

asked by Instrumental on October 7, 2013
2. ### Chemistry

You are asked to prepare a pH = 4.00 buffer starting from 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and some added sodium benzoate salt (C6H5COONa). a) Find the pH of the benzoic acid solution BEFORE adding the salt.

asked by Lacy on February 13, 2013
3. ### Chemistry

You are asked to prepare a pH = 4.00 buffer starting from 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and some added sodium benzoate salt (C6H5COONa). a) Find the pH of the benzoic acid solution BEFORE adding the salt.

asked by Lacy on February 13, 2013
4. ### Chemistry

A compound is known to be a cesium halide, CsX. If 3.00 grams of the salt is dissolved in exactly 100.0 grams of water, the solution freezes at -0.735°C. What is the chemical formula for the salt?

5. ### CHEM

HOW MANY GRAMS OF SALT ARE REQUIRED TO PREPARE 300 G OF 15% SALT SOLUTION? HOW MANY GRAMS OF WATER ARE NEEDED?

asked by Anonymous on December 4, 2010
6. ### chemistry

You weigh an empty dish and find its mass to be 48.0 grams. After you add a volume of salt water to the dish the mass of the dish and salt water is now 74.0 grams. After 100% of the water has been evaporated, the mass of the dish

asked by Abdul on September 5, 2014
7. ### Science

Which of the following solutions would have the highest boiling point? (1) 5 liters of water (2) 5 grams of salt dissolved in 4 liters of water (3) 10 grams of salt dissolved in 3 liters of water (4) 15 grams of salt dissolved in

asked by Mydogbear on May 12, 2017
8. ### Chemistry

When 1.5 grams of salt are added to 12.0 grams of water and the salt dissolves, what is the mass of the system?

asked by Ben on September 11, 2016
9. ### CHEM LAB

Why must you weigh the beaker containing salt and water before dissolving the salt? Why would it be incorrect/inaccurate to obtain the total mass after dissolving the salt? Explain your answer. (We had to do to create different

asked by lo on June 15, 2016
10. ### Chemistry

Is dissolving salt in water an example of reversible? I don't think so because once salt is in water, the water is not clear anymore. Pls help. thanks. Yes, it is reversible. One ca physically separate the salt and water

asked by Linda on February 14, 2007

More Similar Questions