What is the volume of the sample
A 250.0 mL sample of chlorine gas is collected when the barometric pressure is 798 mmHg. What is the volume of the sample after the barometric pressure dropped to 745 mmHg?
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Calculate the wavelength in picometer of gamma ray radiation whose frequency is 9.74 × 1019 Hz. Express answer in scientific notation.
A certain second-order reaction () has a rate constant of 1.65×10-3 at 27 and an initial half-life of 286 . What is the concentration of the reactant after one half-life?
Palladium crystallizes with a face-centered cubic structure. It has a density of 12.0 g/cm^3, a radius of 138 pm, and a molar mass of 106.42 g/mol. Use these data to estimate Avogadro's number in atom/mol.
The solubility product constant, Ksp, for calcium carbonate at room temperature is approximately 3.0 *10-9. Calculate the solubility of CaCO3 in grams per liter under those conditions.
Avogadro's number is big. If you had 6.02 x 1023 dollars, and could spend it at 1 billion (109) per second for your entire life ( 75 years), what approximate percentage of your original money would you have left?
Calculate the concentration of SO2 that must be reached in polluted air if the dissolved gas is to produce a pH of 4.0 in raindrops without any oxidation of the sulfur.
If 3.25 L of ammonia react with an excess of oxygen to form nitrogen monoxide and water steam, what volume of water steam will be produced? The pressure and temperature stay constant.
A student reported the follow ing percentages for his unknown mixture: 25%NH4Cl, 30% NaCl, and 50% SiO2. Assuming that the calculations were done correctly, explain the students error?
what is the minimum number of KiloJoules needed to change 40 grams of water 100 C to stem at the same temperature and pressure?
A balloon filled with 27.3 mol helium has a volume of 612. L at 0.0°C and 1.00 atm pressure. The temperature of the balloon is increased to 33.0°C as it expands to a volume of 686. L, the pressure remaining constant.
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Suggest the best communication channels for the following messages. Assume that all channels are available. Be prepared to explain your choice.
Was the traffic stop lawful? Or did it violate the Fourth Amendment's prohibition on unreasonable searches and seizures?
Provide a rationale why you would use those media forms and how they will contribute to your audience's understanding.
How are attitudes toward women culturally different? In what countries are women and men treated equally in the workplace?
What was the action you are most proud of, or that is the most meaningful to you? What was the civic issue that was involved in your action?
For this reflective assignment, answer the following questions: How has digital media affected your relationships?
Explain why in this reappraisal the new emotion you would have experienced would have been rational by justifying how it was not rooted in any of the 7 Fallacy