Question

Which values have exactly three significant figures? Check all that apply.

Answer 1

Can I have the values to check?

Answer 2

Answer:

0.0230 grams

0.804 inches

140 feet

509 kilometers

Step-by-step explanation:

The given choices are

• 0.0230 grams
• 0.035 ounces
• 0.804 inches
• 3.150 liters
• 140 feet
• 509 kilometers

Significant figures refer to digit numbers that actually mean something to the measure. For examaple, 0.0230 grams has three significant figures, because there are three digits that give information of the measure. But, 0.035 ounces doesn't have three significant figures, because only two digits give information.

Having said that, all numbers with three significant figures are

• 0.0230 grams

• 0.804 inches

• 140 feet

• 509 kilometers

All these number have three significant figures because they have three digits that offer information about the measure.

The number 3.150 liters has 4 significant figures, that's why it's not part of the answer.