How many liters of a 0.400 M HBr dilute solution can be made from a stock solution of 5.00 L of 8.00 M HBr solution? Edit
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answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.