A compound contains 36.5% sodium, 25.4% sulfur, and 38.1% oxygen. The number of moles of sodium in this compound is moles Na.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

Which of the following is true about the speed of light? it depends on the wavelength.

The appropriate concentration for an iodine sanitizer is