Mole is taken in units of gram-mole. on this basis, how many atoms are there in a pound-mole of a substance?

As air molecules move over and under the wings of an airplane, the pressure increases below the wings to create which of the following? A. Lift B. Gravity C. Thrust D. Weight

True or false viruses are living and cannot reproduce on their own

Which gas found in the earths atmosphere greatly impacts the daily range of temperature on earth

Of the rock's original uranium-235 remains. how old is the rock

A water molecule consists of an oxygen atom and two hydrogen atoms covalently bonded in a bent shape. Oxygen however, attracts the shared electrons more strongly than the hydrogen atoms. This structure leads to which important property of water? a.

Facts about heat absorption and simple questions about heat absorption with answer

You measure a piece of wood with a meter stick and is it exactly one meter long. How many centimeters long is it?

When salt dissolved in water, what type of change occurs? A) physical only B) chemical only C) physical and chemical

Select all of the characteristics that define matter. A.) Matter has mass. B.) Matter has volume (takes up space). C.) Atoms and compounds are made out of matter. D.) All matter has the same density.

The science of observing and forecasting weather conditions is called