Which of the following mixtures would result in a buffered solution when 1.0 L of each of the two solutions are mixed? Select one: a. 0.2 M NaF and 0.1 M HNO3 b. 0.2 M NaNO3 and 0.1 M HNO3 c. None of these d. 0.2 M HF and 0.1 M HNO3 e. 0.2 M NaOH and 0.1 M HNO

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?