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1.00 W electric heater operates for 10 minutes to hear the gas in a cylinder. At the same time, the gas expands from 2.00L to 10.00L against a constant atmospheric pressure of 1.0 atm. What is the change in internal energy in Joules of the gas?
the phospholipids in the outer leaflet of the plasma membrane of a human cell are fluorescently labeled. this cell is
A container of water is heated from 23.5C to 85.0C. This process requires 21,900 Joules of heat. Calculate the mass of the water. (c=4.184 J/g-C)
Tums is an example of an antacid that contains calcium carbonate , caco3. consider the reaction between this basic material and HCI. how many moles of HCI do you need to neutralize
What is the PH of .0750L of hypochlorous acid/hypochlorite buffer solution, originally .300M in HCLO and .400M in CLO-. after 7.5E-3 moles of NAOH have been added to the buffer
Calculate the number of grams of glucose must be dissolved in water in order to produce 100.0 ml of a 3.700 M glucose solution (C6H12O6). Density = 2.601
What is the molarity of a HCl solution if the reaction of 200mL of the solution with excess CaCO3 produces 10.5L of Co2 gas at 725mmHg and 18C?
If the partial pressure of oxygen drops below 100.0 mmHg, passengers become drowsy. If this happens, oxygen masks are released. What is the total cabin pressure at which oxygen masks are dropped
Write the complete mechanism for the reaction of the above molecule with HCl. Used curved arrows to indicate the formation or breakage of covalent bonds, label all charges, and show each step separately.
What mass of carbon dioxide is produced from the complete combustion of 5.80×10^3 g of methane. Express your answer with the appropriate units.
How much rations must the hiker consume to avoid a reduction in body temperature of 4.0 K as a result of heat loss? Assume the heat capacity of the body equals that of water and that the hiker weighs 55 kg. State any additional assumptions.
What is the pressure in the tank in atmpshere at a temp. of 33 degrees celcius after the CO2 (r) has been coverted to gas?
a student placed 10.5 of glucose in a volumetric flask added enough water to dissolve the glucose by swirling then
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