Which are different forms of an element that have different numbers of neutrons? ions isotopes compounds molecules

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Naoki's bicycle has a mass of 10 kg. if naoki sits on her bicycle and starts pedaling with a force of 168 n, causing an acceleration of 2.8 m/s2, what is naoki's mass?

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?