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1. When H2 gas was released by the reaction of HCl with Zn, the volume of H2 collected was 66.0 mL at 26 °C and 750 mmHg .
A. What is the volume of the H2 at 0 °C and 1.00 atm pressure (STP)?
2. Express the temperature numerically in degrees Celsius.
A. A sample of gas in a balloon has an initial temperature of 41 °C and a volume of 1800 L . If the temperature changes to 81 °C , and there is no change of pressure or amount of gas, what is the new volume, V2, of the gas?
B. What Celsius temperature, T2, is required to change the volume of the gas sample in Part A (T1 = 41 °C , V1= 1800 L ) to a volume of 3600 L? Assume no change in pressure or the amount of gas in the balloon.
Match the detector or detectors that can be used in gas chromatography for the detection of the following list of analytes by dragging the detector into the box to the left of the analyte.
A certain weak base has a Kb of 7.30 × 10-7. What concentration of this base will produce a pH of 10.07
Write the balanced complete ionic equations and net ionic equations for the reactions that occur when each of the following solutions are mixed. (NH4)3PO4(aq) and CaCl2(aq)
What is the frequency of vibration?
at constant volume the temperature of a sample of sulfur dioxide gas is decreased from 97 oc to 27 oc.nbsp what was the
CaCl2 is used to lower the freezing point of water on streets and sidewalks. Assuming it forms an ideal ionic solution, how many grams of CaCl2 must be added to 1.50 kg of water to lower the freezing point of the mixture to -2.00* C? Kf for water ..
Explain a sample of methane (CH4) gas contains a small amount of helium. Compute the volume percentage of helium if the density of the sample is 0.70902 g/l at 0.0 C and 1.000 atm
Problem- After 55.0 min, 35.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics
a 3.46 liter sample of a gas was collected over water on a day when the temperature was 21 degrees celsiusand the
When 17 mL of a solution containing .29 M Ca(OH)2 is diluted to 30 mL, a dilute solution is formed. What is the OH- concentration in 5 mL of the dilute solution?
The molar enthalpy of vaporization of carbon disulfide is 26.74 kJ/mol, and its normal boiling point is 46°C. What is the vapor pressure of CS2 at 0°C
Question- Consider the titration of 37.2mL of 0.270M HF with 0.200M NaOH. Calculate the pH at each of the following points A. How many milliliters of base are required to reach the equivalence point
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