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How much ice (in grams) would have to melt to lower the temperature of 351 mL of water from 26 C to 6 C? (Assume the density of water is 1.0 g/mL.)
Part A. At 25°C, another student has the following data for the aluminum cylinder. The uncertainty in mA, mB, and mcyl is 0.001 g.
How many joules of heat are required to heat 143 g of aluminum from 55.0 oC to 66.5oC?
The stock solution is 500 ?g/mL and you want to obtain a final concentration of 1?M. What volume of the stock solution do you need to make 10 milliliters of the 1 ?M solution? Also: What is the molar mass of PMA?
What is the half-life of this reaction assuming first-order kinetics?
What error will this cause in their determination of the amount of iron in the table?
Using a solution containing 0.302 grams of an antibiotic has an osmotic pressure of 8.34 mmHg At 23.6°C, 0.500 L. calculate its molecular mass.
Write a mechanism for the conversion of 1-butanol to 1-butyl bisulfate, indicating the flow of electrons.
an optically pure compound was diluted to 400.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was -2.87° at 25 °C. Calculate the specific rotation of the compound.
Describe the preparation of 1L solution of 0.02M Tris buffer, PH 7.8. Please don't just write numbers.. explain it.
write the Nernst equation for the reduction of Fe2O3 (s) according to the reaction listed below, write the equation in terms of pH.
Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if the can were heated to 1155 °C?
Draw and label the galvanic cell, then write and identify he two half-life reactions and write the overall cell reaction. Calculate E. Write the cell diagram for the galvanic cell and calculate the expected cell potential
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