Four beakers containing potassium nitrate dissolved in water are allowed to evaporate to dryness. beakers 1 through 4 contain 2.3, 1.91, 5.985, and 0.52 g of dry potassium nitrate respectively. how many moles of potassium nitrate were recovered after the water evaporated?

Explanation:

Molar mass of potassium nitrate will be calculated as follows.

   Molar mass = molar mass of K + molar mass of N + 3 × molar mass of O

                             = 39.098 g/mol + 14.006 g/mol + 3 × 15.999 g/mol

                             = 102.102 g/mol

Now, adding the given amount of potassium nitrate present in each beaker as follows.

               (2.3 + 1.91 + 5.985 + 0.52) g

               = 10.715 g

Therefore, calculate number of moles as follows.

                   No. of moles =

                                         =

                                         = 0.105 mol

Thus, we can conclude that 0.105 moles of potassium nitrate were recovered after the water evaporated.

i do not know

explanation:

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them