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Cyclopentanethiol has a markedly lower melting point than cyclopentanol even though, it has a




higher molecular weight. Explain

What is the equilibrium constant of 4HI(g)-2H(g)+2I2(g) if K has the value of 2.5 for the reaction . ASAP PLEASEE

2. Calculate the AH for the reaction:



CS2 (1) + 2 O2 (g) CO2 (g) + 2 SO2 (g)



Given:



AHCO2 (g) = -393.5 kJ/



mol;



AHSO2 = -296.8 kJ/mol;



AHCS2 (1) = 87.9kJ/mol

2. Calculate the AH for the reaction:




CS2 (1) + 2 O2 (g) CO2 (g) + 2 SO2 (g)




Given:




AHCO2 (g) = -393.5 kJ/




mol;




AHSO2 = -296.8 kJ/mol;




AHCS2 (1) = 87.9kJ/mol

A 250.0 mL of a 0.500 M HCl solution needs to be made from concentrated HCl. How much water would you add to make the final solution?


1. How many NaCI will dissolve in water in 400g of water at 100 degrees Celsius?


2. Approximately how many grams of NaNO3 will dissolve in 100g of water at 10 degrees Celsius?


3. How many grams of KCI will dissolve in 1 liter of H2O at 50 degrees Celsius?


4. What relationship exists between solubility and temperature for most of the substances shown?


169cm^3 of hydrogen were collected over water at 20°c and 755 mmHg. The saturated vapour pressure of water at 20°c is 17 .5 mmHg. What will be the volume of the hydrogen at s.t.p


An organic compound 0.246g by mass was burnt in oxygen and produced 0.198g carbon dioxide and 0.1014g water what is the empirical formula of this compound

A pure sample of S-phenyalanine has a specific rotation of [a] of 70degree If am mixture of two enantiomers of phenylalanine gives a specific rotation of -14.0 degree, what is the percentage of S enantiomer in this mixture?


Which of the following molecules are negatively charged nucleophiles? 1) KN3 (2) LiN(CH3)2 (3) HSCH3


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