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A 9.357g piece of iron with Cs of .449J/g*c is placed in a hot water bath with temperature of 98.3C. The metal is placed in a calorimeter that contains 50.0mL of h20(dh20 is 1.00g/mL) at 24.0C. Explain what the final temperature of the water is.
Explain which element is the central atom, define how many bonds does the central atom form, is it polar or non-polar, explain what the direction of negativity is
A copper,(Cu(s) , electrode is immersed in a solution that is 1.00 M in ammonia,NH3 , and 1.00M in tetraamminecopper(II),[Cu(NH3)4]^2+ . If a standard hydrogen electrode is used as the cathode,
What concentrations of acetic acid (pKa = 4.76) and acetate would be required to prepare a 0.10 M buffer solution at pH 5.0. Enter your answer to two significant figures.
C2H5OH(aq)+2Cr2O7^2-(aq)+16H+(aq)---> 2CO2(g)+4Cr^3+(aq)+11H2O(l) What is the blood alcohol level in mass percent if 8.26mL of 0.04988 M K2Cr2O7 is required for titration of a 10.005g sample of blood?
a mixture of 0.10 mol of no 0.2 mol of h2 and 0.10 mol of n2 is placed in a 1.0-l vessel at 300 k. the following
How many grams of glucose are in 100. rm mL of the final solution?
A certain sample of gas has a volume of 20.00 dm3 at 0°C and 1.000 atm. A plot of the experimental data of its volume against the Celsius temperature, ?, at constant p, gives a straight line of slope 0.0741 dm3 (°C)?1.
A container with a removable partition contains gas A and gas B. Gas A is at 400K and 10.0 atm and gas B is at 400K and 4.00 atm. The partition is removed and the gases mix
an infant ibuprofen suspension contains 100 mg5.0 ml suspension. the recommended dose is 10 mgkg body weight. how many
what is the equilibrium concentration of the hydroxide ion (OH-) in the water? Please show formulas used, your answer with units and calculations as text below or an attached file.
Write the ground state electron configuration , both full notation and noble gas abbreviation and indicate the number of valence electrons for Al, I, Rb, Ar, Mg
calculate the theorretical yield of aspirin if 1.05 g of salicyclic acid is combined with 2.0 mil of acetic anhydride.
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