How would different ratios of fuel and oxygen affect the altitude the rocket reaches

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.

If a particle has z = 25 and 23 electrons, what is its charge?