PLZZZ HELP! A 3.24 gram sample of NaHCO3 was completely decomposed in an experiment.

2NaHCO3 -> Na2CO3 + H2CO3

In this experiment, carbon dioxide and water vapors combine to form H2CO3. After decomposition, the Na2CO3 had a mass of 2.19 grams.

Determine the mass of the H2CO3 produced. Calculate the percentage yield of H2CO3 for the reaction. Show your work or describe the process in detail

Mass of H2CO3 produced = 1.05 g

Percentage yield of H2CO3 = 87.5%

Explanation:

Equation of the reaction is given below:

2NaHCO3 -> Na2CO3 + H2CO3

From the equation of reaction , 2 moles of NaHCO3 decomposes to produce 1 mole of H2CO3

Molar mass of NaHCO3 = 23 + 1 + 12 + 16 × 3 =  84 g

Molar mass of H2CO3 = 1 × 2 + 12 + 16 × 3 = 62 g

2 moles of NaHCO3 = 2 × 84 g = 168 g

Therefore,  168 g of NaHCO3 will produce 62 g of H2CO3

3.24 g of NaHCO3 will produce 62/168 × 3.24 g of H2CO3  = 1.20 g of H2CO3

From the value given in the question, 3.24 g of NaHCO3 decomposes completely to give Na2CO3 and H2CO3.

2.19 g of Na2CO3 are produced.

From the law of conservation of mass, mass of H2CO3 produced = 3.24 g - 2.19 g

Mass of H2CO3 produced = 1.05 g

Percentage yield = actual yield/theoretical yield × 100%

Actual yield = 1.05 g; Theoretical yield = 1.20 g

Percentage yield  = 1.05/1.20 × 100%

Percentage yield  = 87.5%

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).