If an atom has 104 electrons, 157 neutrons, and 104 protons, what is its approximate atomic mass?

Verna decides that the smallest thing that makes up a rose is a petal. If she used a microscope to look at the rose, would she change her mind?

A scientist has a container filled with carbon dioxide gas. The particles of this gas are far apart, moving quickly, and bouncing off the container walls.

Which bond is most polar? A) N - H B) C - H C) O - H D) H - H Can anyone explain this one?

True or False Gravitational and electromagnetic forces are both too weak to be able to overcome the electrostatic force of proton - proton repulsion in the nuclei of atoms.

Is thermal energy transferred from the dry ice to the water or from the water to the dry ice?

Which is one way that in advance and biotechnology companies unintended consequence is that harm the environment? a. genetically modified plants require less water to grow b. patient using insulin pumps live longer than those without the pumps c.

A 27.3 g marble sliding to the right at 21.0 cm/s overtakes and collides with a 11.7 g marble moving in the same direction at 12.6 cm/s. After the collision, the 11.7 g marble moves to the right at 23.7 cm/s. Find the velocity of the 27.

Acids feel slick or soapy and usually have a bitter taste. True or False

What are two ways in which density has practical importance?

What happens to the density of a fluid when it is cooled?