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Barium chloride (BaCl2) is an inexpensive, soluble salt of barium that has wide application in the laboratory, including in the gravimetric determination of the presence of sulfate ions. Solid barium chloride can be produced through the decomposition reaction of solid barium chlorate (Ba(ClO3)2) which also produces oxygen gas. When 7.25 g of barium chlorate decomposes completely, 4.96g of barium chloride is produced.

Write a balanced chemical equation for the decomposition of barium chlorate. (2 marks)

Using your understanding of the conservation of mass, determine how much oxygen is produced. (1 mark)

If 5.00g of barium chlorate was used instead, how much more barium chlorate would be required to produce the same amount of barium chloride? (2 marks)

If you tripled the amount of barium chlorate, what would be the effect on the total mass of products? (2 marks)

If the decomposition of 7.25g of barium chlorate produced only 3.72 g of barium chloride and 1.72 g of oxygen, how much barium chlorate did not decompose? (2 marks)

58750.08068 is the answer i think

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).