Agaseous sample of pure methane, ch4, is found to occupy a volume of 20.0 l at 25℃ and 1 atm pressure. what volume of o2, at the same temperature and pressure, should be just sufficient to permit complete combustion of the methane?

10.0 l
20.0 l
30.0 l
40.0 l
none of the above is correct.

Janel’s class studied properties of matter and how matter can change. janel decided she would do an experiment mixing baking soda and vinegar.question: describe the properties of baking soda and vinegar, and explain the changes that janel should see when she mixes the two types of matter. •first, identify the physical state of matter of baking soda. describe another property of baking soda. •next, identify the physical state of matter of vinegar. describe another property of vinegar. •then, explain what janel should see when she mixes the baking soda and vinegar. •describe the states of matter of the new materials that are formed. •explain how janel can be certain a change has occurred. me

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?