1 According to the modern model of the atom, the nucleus of an atom is surrounded by one or more (1) electrons (3) positrons

(2) neutrons (4) protons

Which option identifies the field of science that supports the interests of the person in the following scenario? Tina's family is from South America.

Copper exists in two naturally occurring isotopes. The average atomic weight of copper is 63.546 amu. If 69.15% exists as 63cu with an atomic mass of 62.92, then what is the atomic mass of the second isotope?

The force against a solid object moving through a gas or a liquid

How many total protons neutrons and electrons are in an atom of iodine with a mass number of 127

A pressure of 725 mmhg is equal to how many atms

A penny has a mass of 2.50g and the moon has a mass of 7.35 X 10^22 Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.

If a car tire has a diameter of 3232 inches, what is the approximate circumference of the tire?

9) Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak.

Explain what happens to the average kinetic energy thermal energy and temperature of a substance when the particles in the substance slows down

Which of the following could be used to describe the rate of a reaction? change in time/change in concentration change in mass/change in concentration change in concentration/change in time change in concentration/change in mass