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If the mass of a material is 48 grams and the volume of the material is 6 cm^3, what would the density of the material be?
What mass of solid sodium fluoride (molar mass = 41.99 g/mol) should be added to 1.0 L of 0.23M hydrofluoric acid to make a buffer with a pH of 2.94? (Ka of HF = 1.36 x 10-3)
When 0.0200 mol gaseous NH3 and 0.0180 mol gaseous O2 are placed in a 1.00 L container at a certain temperature, the N2 concentration at equilibrium is 2.20Ã-10-3 M. Calculate Keq for the reaction at this temperature.
The save drinking water act sest the limit of mercury at 1*10^-8. Suppose water becomes contaminated at twice the legal level. How much water would you have to drink to ingest 50mg Mercury
A 2.2g sample of a small protein having a molecular weight of 42,000 g/mol is dissolved in 45.6 mL of water at 23 degrees C. What is the osmotic pressure of the solution
An unknown compound X is one of the four compounds listed in the Table below. A mixture of X with benzoic acid melts at 89 degrees Celsius, a mixture of X with phenyl succinate melts at 90 degrees Celsisus, and a mixture of X with m-aminophenol me..
how many moles of hydrogen gas (H2) can be liberated from 104 mol of magnesium hydride if the process operates on 77% efficency?
Why do you think the enthalpy of activation, (REFER TO THE PICTURE), for a syn-periplanar elimination is higher than that for an anti-periplanar elimination
Compute the final temperature of a mixture of 200.0 g of ice initially at -15 degrees celsius and 369.0 g of water initially at 98.5 degrees celsius.
State the full ground-state electron configuration for the following. State answer using the format 1s2 2s2 2p6 for 1s22s22p6.)
Compute the pH of a solution containing 0.15 M acetic acid as well as 0.25M sodium acetate. For aceitc acid, Ka= 1.8x10-5. (either as a buffer system or use ICE table. NaOAC is strong electrolyte)
A sample of arabinose, C5H10O5, contains 0.6000 moles of the substance. How many carbon atoms are in the sample?
After that the student diluted each of the four solutions to 100.00mL with deionized water. The pH of each solution was 4.615, 5.072, 5.488, and 6.114, respectively. For all of the four solutions how many moles of base were added
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