How many molecules of oxygen is used when 15 grams of CH4 is burned in open air? Balanced equation: CH4 + O2 -> CO2 + 2 H20
O 4.51x1023
O 5.63x1 choy
O 6.11x1023
O 8.72x1023

What are transitions between a liquid and gas called? identify which way they are transitioning

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

What best discribes the relationship between wavelength and frequency in a electromagnetic wave