Converting ppb and Percent Mass

This video tutorial by ChemTutor explains how to convert between percent mass per volume and parts per billion (PPB). It starts with a brief introduction and prerequisites, followed by a detailed explanation of the concepts. The video includes two examples: one converting percent mass per volume to PPB and another converting PPB to percent mass per volume. Each example is broken down step-by-step to aid understanding.

What is the main topic discussed in the video?

• The history of chemistry

• Converting percent mass per volume to ppb and vice versa

• How to balance chemical equations

• The periodic table

What is the formula for percent mass per volume?

• Grams of solute divided by liters of solution times 100

• Grams of solute divided by ml of solution times 100

• Grams of solute divided by ml of solution times 10^9

• Grams of solute divided by liters of solution times 1000

How is the formula for parts per billion (ppb) different from percent mass per volume?

• It multiplies by 10^9 instead of 100

• It divides by 10 instead of multiplying

• It uses liters instead of milliliters

• It uses kilograms instead of grams

Which of the following is a correct expression for parts per billion (ppb)?

• Grams of solute divided by ml of solution times 100

• Grams of solute divided by ml of solution times 10^9

• Grams of solute divided by liters of solution times 10^9

• Grams of solute divided by liters of solution times 100

In Example 1, what is the initial concentration of NaCl given in percent mass per volume?

• 21%

• 0.21%

• 0.212%

• 2.12%

What is the final concentration of NaCl in ppb after conversion in Example 1?

• 2,120,000 ppb

• 212,000 ppb

• 21,200 ppb

• 2,120 ppb

What is the first step in converting percent mass per volume to ppb?

• Multiply by 10^9

• Divide by 100

• Multiply by 100

• Divide by 10^9

In Example 2, what is the initial concentration of NaCl given in ppb?

• 8,000 ppb

• 80,000 ppb

• 800,000 ppb

• 8,000,000 ppb

What is the final concentration of NaCl in percent mass per volume after conversion in Example 2?

• 0.08%

• 0.0008%

• 0.008%

• 0.8%

What is the first step in converting ppb to percent mass per volume?

• Multiply by 10^9

• Divide by 10^9

• Divide by 100

• Multiply by 100