If an unknown element has a mass number of 14 and 7 neutrons how many protons are there

Is poh level a acid or base

The study of matter and energy is

What is a negatively charged subatomic particle?

Formulate the sequence of steps needed to prepare 250.0 mL of a 0.005 M aqueous solution from solid KMnO4 and pure water.

True or False. 1) _ Transparent objects have color. 2) _ Many shower curtains, wax paper, and tissue paper are translucent. 3) _ Transparent objects absorb most of the light the light that strikes them.

Which statement describes thermal energy? the energy that is associated with electric fields the energy that is stored in chemical bonds the energy that is associated with the pull of gravity the energy that is associated with temperature

Give the formula %error = theoretical value - experimental value / theoretical value * 100 calculate the percent error for the experiment.

A baker touches a pie right after taking it out that of me which statement best explains why the pie feels hot

A scientist discovers a new type of polymer. What must be true about this polymer? A. It contains carbon atoms arranged in a ring structure. B. It has double bonds between all the carbon atoms. C. It contains molecules of many different types. D.

A line in the lyman series of hydrogen has a wavelength of 122 nm. from what state did the electron originate?