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8. your expense account allows you to spend $80.00 a day when you are on a trip. If you have a week-long trip to tiny country of Kratvia, where the exchange rate is 3.50 kratvels per dollar, how many kratvels can you spend during the week? (7 days) 6. A bicycle has 56cm frame. What is this frame size equal to in inches? (1.00 in = 2.54cm. Note that this equivalence does not limit sig figs in the final answer) 7. The speed limit on a road in Mexico is 90 km/hr. What is this speed equivalent to in miles per hour, if 1.00 Km=0.0621 mile? For the following questions: Give correct significant figures in the answer, using scientific notation if necessary. 1. An empty flask has a mass of 93.625g. the same flask with a 10.00ml sample of water in it has a mass of 103.619 g. Find the mass of the water in the flask. 9. An architect designs a room that has an interior measurements of 50.00 feet by 30.0ft by 10.0 ft. What is the volume of the room in cubic ft? 10. A student measures the mass of a iece of aluminum, and finds it tone 8.945 g. she then finds that the volume of the aluminum sample is 3.3cm^3. If the formula for density is d=mass/volume,find the density of the aluminum sample. 11. A student finds that the mass of a flask is 95.451 g. Her lab partner paces a 10.00 ml sample of an unknown liquid into the flask and re weight it. The mass of the flask plus the liquid is 102.551 g. What is the mass of the liquid?
Nitrogen dioxide decomposes at 6.50 x 10-3 M s-1 during the reaction: 2NO2(g) --> 2NO(g) + O2(g) Answer the following questions:
Glacial acetic acid is mixed with liquid methanol (nonaqueous). What type of organic reaction can this be characterized as?
Of the two materials VO and NiO, which would be expected to exhibit more metallic properties?
the equivalence point occured at 4.67 mL of HCl. Calculate the pH at 0.00 mL of added HCl and at 2.00 mL of added HCL
A 10 mL aliquot of a 10 M solution diluted to 250 mL A 25 mL aliquot of a 10 M solution diluted to 250 mL A 57 gram beaker that weighs 82 grams after NaCl is added transfers all of the NaCl into a 100 mL volumetric flask and dilutes it to the mark..
When a metal was exposed to light at a frequency of 4.54× 10^15 s-1, electrons were emitted with a kinetic energy of 3.10 × 10^-19 J.
Liquid sodium can be used as a heat transfer fluid. It's vapor pressure is 40.0 torr at 633 Celsius and 400.0 Torr at 823 Celsius. Calculate its heat of vaporization.
what is the pOH of a solution prepared by adding 2.88 g of sodium nitrite, NaNo2, to 135mL of water? ka of HNO2 is 4.5x10^-4.
At high temperature, hydrogen and carbon dioxide will reversibly react to form carbon monoxide and water vapor. At 986oC there are 0.11mol of each product and 0.087mol of each reagent in a 1.00L flask. What is Kc under these conditions
Oxygen binds to the hemes in myoglobin and hemoglobin. However, when plotting oxygen's ability to bind to the protein vs. O2 concentration myoglobin and hemoglobin have dramatically different graphs. Explain this observation.
Determine the maximum number of electrons that can be found in each of the following subshells.
Cyclohexane has a freezing point of 6.50 C and a Kf of 20.0 C/m. What is the freezing point of a solution made by dissolving 0.771 g of biphenyl (C12H10) in 25.0 g of cyclohexane?
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