What type of energy transformation occurs in a campfire?

1. light energy to mechanical energy

2. thermal energy to light energy

3. mechanical energy to chemical energy

4. chemical energy to light and thermal energy

Can you see a non living and living atoms with a magnifying glass?

Will no3 - ions affect the ph of a solution? will ions affect the ph of a solution? no3 - ions will not affect the ph. no3 - ions will decrease the ph. no3 - ions will increase the ph.

The atomic number of an atom will always identify the amount of protons in its nucleus. If the atom is neutral, what else is identified by the atomic number? A. the number of electrons in the atom B. the most common isotope of the atom C.

A sample of 4.59 L of CO2 gas has a pressure of 7.56 atm. What volume (in Liters) would the gas occupy if the pressure was reduced to 2.57 atm and the temperature raised from 25.0oC to 39.0oC?

A student takes a measured volume of 3.00 MHCl to prepare a 50.0 mL sample of 1.80 M HCl. What volume of 3.00 M HCl did the student use to make the sample?

Is pure orange juice a solution or a suspension

If a catalyst is used in a reaction: a. the energy of activation increases. b. the reaction rate does not change. c. the reaction rate increases. d. the equilibrium shifts.

Methanol (CH3OH) is produced commercially by the catalyzed reaction of carbon monoxide and hydrogen: CO (g) + 2H2 (g) ⇌CH3OH (g). An equilibrium mixture in a 1.50 L vessel is found to contain 0.0679 mol CH3OH, 0.160 mol CO, and 0.302 mol H2 at 500 K.

Explain why an object when thrown in the air or slid across the ground doesn't travel forever

The length of time required for half of the radioactive atoms in a sample to decay is its a. half-life. b. relative date. c. radioactive date. d. period