Chemistry Answers

e) A diatomic gas has a density of 1.25 g/L at STP. Calculate its molar mass and identify the gas.

What is the molality of para-dichlorobenzene in a solution prepared by dissolving 2.65g C6H4Cl2 in 50.0 mL of benzene (d=0.897g/mL)?

Search for one organic compound/product that is useful in our everyday life.Identify the following: functional group,structureand properties,and its applications or use.Use image and less text.Use A4 or letter-size bond paper.

Heat always flows from a body at a higher temperature to a body at a lower temperature, according to the law. This law applies to all sorts of heat engine cycles, including Otto, Diesel, and others, as well as all types of working fluids. This law has aided the advancement of modern cars Refrigerators and heat pumps based on the Reversed Carnot Cycle are another implementation of this concept. You must give external effort if you wish to transmit heat from a lower temperature body to a higher temperature body. Heat creates work in the original Carnot Cycle, whereas work is given to transport heat from a lower temperature reservoir to a higher temperature reservoir in the Reversed Carnot Cycle. According to these examples give another application of the second law of thermodynamics to real life situation.

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Balance the following redox reactions.

KCO3 + Br ⟶ KBr + KBrO3 + CO2

Dilute nitric acid reacts with copper to form copper (II) nitrate, nitrogen monoxide and water Zinc reacts with sodium chromate in a sodium hydroxide solution to form NaZnO2, NaCrO2, and H2O 

What are lactams? Write the structures of  -butyrolactam and  -valerolactam and give their

IUPAC names.

How many moles of HCl will react with 18.13g of SrO?

SrO + 2HCl ------> + H2O

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