Which of the following chemical equations demonstrates that atoms are conserved during a chemical reaction?

What must Lauren do to make her sugar cube dissolve quicker than Matt and Erin?

Why does a plastic comb attract small bits of paper after rubbing with wool?

The ph balance is maintained by which organ?

Planck's constant, h, is 6.626 x 10-34 js. the speed of light in a vacuum, c, is 3.00 x 108 m/s. calculate the frequency of a green laser with a wavelength of 510 nm

A child whose weight is 228 N slides down a 4.10 m playground slide that makes an angle of 44.0° with the horizontal. The coefficient of kinetic friction between slide and child is 0.0720.

The current through two identical light bulbs connected in a series is 0.25 amps. The voltage across both bulbs is 100 volts. Find the resistance of a single light bulb.

The Sun transfers light energy that is transformed into what kind of energy in plants?

The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s.

If an atom has 34 protons and 40 neutrons, what is the mass number?

The atomic mass of an atom (in amu) is equal to Question 11 options: A. the total number of its protons, neutrons, and electrons B. the total number of electrons C. the total number of protons D. the total number of its protons and neutrons E.