# Chemistry

Determinne the amount of Dextrose and NaCl in 500ml of 5% DNS. (The solution is 5% in regards to dextrose and 0.9% in regards to NACl.)

1. 👍 0
2. 👎 0
3. 👁 197
1. This is where those crazy solution concentrations in medicine come in, you just can not say percent, you have to state the basis. Commonly, (in medical terms), these are w/v. So I assume you are using w/v

.05 w/v or with 500ml, then you have 25g sugar, and 4.5g salt

I have never understood why w/v is used, I guess since it eliminates density, it is easier, afterall, who wants to worry with density?

1. 👍 0
2. 👎 0
👨‍🏫
bobpursley

## Similar Questions

1. ### biology

A red blood cell is placed into each of the following solutions. Indicate whether crenation, hemolysis, or neither will occur. Solution A: 3.21% (m/v) NaCl Solution B: 1.65% (m/v) glucose Solution C: distilled H2O Solution D:

2. ### Chemistry

A saline solution used in intravenous drips for patients who cannot take oral fluids contains 0.92% (w/v) NaCl in water. How many grams of NaCl are contained in 250 mL of this solution? So wouldn't it just be .92%= .92 grams x

3. ### Chem

Plese tell me if these are right. A 15.0-mL sample of NaCl solution has a mass of 15.78g. After the NaCl is evaporated to dryness, the dry salt residue has a mass of 3.26g. Calculate the following concentrations for the NaCl

4. ### medicine

50 ml of a solution of 50% dextrose is added to a liter of 0.45% NaCl with 2.5% dextrose to yield a solution with a final dextrose concentration of what percent

1. ### chemistry

calculate the mass, in grams, of NaCl present in each of the following solutions. 6.25 g of 11.5% NaCl solution 452 g of 12.3% NaCl solution please show me how to do these. Thanks.

2. ### pharmacy calculations

If 500gm of dextrose are dissolved in 600ml of water, with the final volume being 1000ml, what is the percentage strength of the dextrose in the solution?

3. ### more math needed

You have a 70% dextrose solution. How many grams of dextrose are in 400ml?

4. ### medicine

How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?

1. ### Math

How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?

2. ### Chemistry

A solution is made by dissolving 0.100 mol of NaCl in 5.35 mol of water. What is the mass % of NaCl? So far, I have determined molecular weight of NaCl (58.44 g/mol) multiplied by 0.100 mol = 5.844g NaCl, and mw of H2O (18 g/mol)

3. ### Math

A nutritional formula calls for 500 g of dextrose in a total volume of 2000 ml. how many milliliters of a 70% w/v dextrose injection are needed to provide the required amount of dextrose? This seems to be a dimensional analysis

4. ### Chemistry

Information beforehand: mass of weighing vial + NaCl / g 16.2597 mass of “empty” weighing vial / g 14.8136 mass of NaCl used / g Final volume of solution / L 0.2500 Questions: 1) Calculate the concentration of the NaCl