Which of the following equations are balanced correctly?

A: Cu + H2O → CuO + H2

B: Zn + HCl → ZnCl2 + H2

C: 2C4H10 + 13O2 → 8CO2 + 10H2O

D: 2Ag2O → 4Ag + O2

Ultraviolet radiation increases the likelihood of a cell becoming malignant primarily because UV radiation a. breaks DNA into fragments. b. causes DNA damage that leads to mutations. c. makes RNA polymerase more error-prone. d.

What color dose red cabbage jusice turn into when its mixed with white vinegar

The leaning tower of Pisa is about 56 meters tall. A ball released from the top takes 3.4 seconds to reach the ground. The final velocity of the ball before it hits the ground is 33 meters/second.

How does the nervous system allow you to run

Which of the following is an example of a decomposition reaction? a. photosynthesis b. digestion c. polymerization d. exchange of ions between two compounds

If the mass of a material is 49 grams and the volume of the material is 10 cm^3, what would the density of the material be?

What did you notice about crossing two heterozygous genotype?

A toll booth on a turnpike is open from 8:00 AM until midnight. Vehicles start arriving at 7:45 AM at a uniform rate of 6 veh/min. At 8:15 AM the rate drops to 2 veh/min.

A tornado lifts a truck 252 m above the ground. As the storm continues, the tornado throws the truck horizontally. It lands 560 m away from where it was picked up.

The force of attraction between 2 objects is called gravity. Why do you think that an object, like your notebook, pulled towards you? Explain your reasoning. I don't need the answer I just don't understand what this question is asking.