You mix solution A with solution B in a beaker. Which of the following observation does not help you to prove that a chemical reaction has occurred A- Yellow precipitate is formed

B- Bubbles are seen

C- None of the above, all of them are signs of chemical reactions

D- The beaker becomes warm

Under what conditions will a gas be most likely to exhibit the ideal gas properties predicted by the ideal gas law? 1)high pressures and high temperature, because particles are forced closer together with higher kinetic energy, so intermolecular forces of attraction are weaker 2)high pressure and low temperature, because particles are forced closer together and moving slower, so the volume of the particles is less significant 3) low pressure and high temperature, because particles are spread farther apart and moving faster, so the intermolecular forces of attraction are weaker 4)low pressure and low temperature, because particles are spread farther apart with lower kinetic energy, so the volume of the particles is less significant