CL0639 Lesson 1 - Intro and Evaluation of Data

Which of the following is NOT a reason to do food analysis from the government point of view?

• To maintain general quality of food supply

• To inform consumers about the nutritional composition of food

• For new product development

• To enable fair competition among food companies

How many significant figures are there in 89,300?

• 1

• 2

• 3

• 4

• 5

How many significant figures are there in 0.00500?

• 1

• 3

• 5

• 6

• 1

• 2

• 3

• 4

Rosemary prepared a stock solution using 3g of dye and dissolved it in a 300ml volumetric flask. What is the concentration of the stock solution in mg/L (ppm)?

• 100 mg/L

• 1,000 mg/L

• 10,000 mg/L

• 100,000 mg/L

To prepare TEN (10) times dilution from a stock solution 10mg/mL, ___ml of solution will be taken from the stock solution and make up with water in a 100ml volumetric flask.

To prepare TWENTY (20) times dilution from a stock solution 10,000mg/mL, ___ml of solution will be taken from the stock solution and make up with water in a 50ml volumetric flask.

Calculate the mean and standard deviation of percent moisture in milk powder samples as shown in the table.