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Q.1 A sample of an unknown compound was analyzed and was found to contain 0.0894 moles of silver and 0.0447 moles of sulfur. What is the formula of the compound? What is the name of the compound?
Q.2 A sample of an unknown compound was analyzed and was found to contain 1.49 grams of iron and 6.37 grams of bromine. What is the formula of the compound? What is the name of the compound?
Q.3 A sample of an unknown compound was analyzed and was found to contain 0.351 grams of water and 1.27 grams of CoCl2. What is the formula of the compound (written as a hydrate)?
Q.4 Convert 0.1825 moles of strontium nitride to masses in grams.
A polypeptide is completely hydrolyzed, then reacted with PITC, followed by amino acid chromatography. What information is obtained
chlorobutenedioic acids dehydrochlorinate to give acetylene dicarboxylic acid. The Z reacts about 50 times faster
Two beakers, one containing 0.010 m NaCl(aq) and the other containing 0.010 m AlCl3(aq), are placed inside a bell jar and sealed. The beakers are left until the water vapor has come to equilibrium with any liquid in the container.
A hot water bottle contains 960. g of water at 59 degree C. If the water cools to body temp (37 degree C), how many kilocalories of heat could be transferred to sore muscles
Calculate the resulting pH if 365 mL of 2.88 M HNO3 is mixed with 335 mL of 1.10 M Ca(OH)2 solution.
A compound containing nitrogen and oxygen is decomposed in the laboratory and produces 1.78 g of nitrogen and 4.05 g of oxygen. Calculate the empirical formula of the compound.
What is the maximum amount of CO2 (44.0095 g/mol) which could be formed from 16.42 g of CO (28.0101 g/mol) and 0.24 mol of O2 (31.9988 g/mol)? Answer in units of mol
Differences in boiling points, Rationalize the difference in boiling point between the members of the following pairs of substances:
Post a common conflict scenario that you have encountered in dealing with an organization, whether it be a private business, a government agency
a solution is prepared by dissolving 20.2 ml of methanol in 100 ml of water. the final volume of the solution is 118
Sodium has a greater first ionization energy than sulfur, and the reason for this is because Na has a greater effective nuclear charge (Zeff) than S.
What two properties of gold make it possible to find gold, but not metals like copper, silver, lead, and aluminum, by panning
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