A 1.555 g sample of baking soda decomposes with heat to produce 0.991 g Na2CO3. What is the percent yield of sodium carbonate, Na2CO3?

Explanation:

Baking soda decomposes to produce sodium carbonate .

2NaHCO₃  = Na₂CO₃ + CO₂ + H₂O.

2 x 84 g          106 + 10 x 18  g

Molecular mass of Na₂CO₃ .10H₂O = 286

168 g baking soda  produces 286  g sodium carbonate

1.555g baking soda will produce 286 x 1.555 / 168

= 2.647 g

Percentage yield = actual yield / theoretical yield x 100

= ( .991 /2.647 ) x 100

= 37.43 %.

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  

pv=nrt

explanation: