A 10 gram sample of material, A, was placed in water. Four grams of it B, did no
ID: 494184 • Letter: A
Question
A 10 gram sample of material, A, was placed in water. Four grams of it B, did not dissolve, even after being separated and placed in a second volume of water. B could not be decomposed into any simpler substances Evaporation of the water from the soluble portion of A yielded 6 grams of solid, C. Heating Bin air yielded 8 grams of gas, D, leaving no solid residue. Melting a electrolysis of C yielded 2.4 grams of metal, 3.6 grams of gas, F. each material described above by placing the corresponding letter in the appropriate place in the table below. An oilrig pumps 30 barrels of oil/day, exactly. Each barrel holds 55.0 2.35 g/mL, how long will it take the rig to produce 5.00 times 10^5 kg of oil? A new lab technician, on his first day on the job, drops his lab key into a large bottle of concentrated nitric acid density of 6.347 g/cm^3. The acid dissolve, of the key AT A RATE OF 0.00235 G/S By the time the lab tech gets the key out of the acid, 10.0 minutes have passed. What is the volume of the key remaining? A snail escapes from a French restaurant on foot The snail can crawl exactly one inch in exactly 5 seconds it has to crawl 12.03 km to get to the open countryside. After exactly 12 days, how far is the snail from countryside? 58.752 of aluminum pellets were added to 24.52 mL water in a graduated cylinder The water level rises to 46, 28 mL Calculate the density of the aluminum pellets.Explanation / Answer
B is compound.
Compound is composed of atoms of two or more elements chemically combined in fixed proportion.
Because on heating 4grams of B in air yields 8grams of gas D.
B might be diatomic compound since 4 grams yields 8 grams of D.
D is element.
C is water soluble compound.
Melting and electrolysis of C yields 2.4 grams of metal E and 3.6 grams of gas F
Metal E is element.
Gas F may be compound
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