A penny is 0.061 inches thick. What is the value of the 6 in the thickness of a penny? Mathematics not chemistry

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree