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At a dosage of 18 micrograms/kilograms body weight, how many milligrams of digitalis should a 180 lb. patient receive
A chemistry graduate student is designing a pressure vessel for an experiment. The vessel will contain gases at pressures up to 210.0 MPa.
How much heat does your body lose when 1.8 of sweat evaporates from your skin at 25 ? (Assume that the sweat is only water.) The heat of vaporization of water at 25 is 44.0 .
A block of alumium with a volume of 91.1cm^3 absorbs 64.6 j of heat. If its initial temperature was 33.7C, what is its final temperature
Draw the VSEPR diagram and classify the shape of the molecule for F2O
The pK value of the system is 6.1. If the [CO2] is expressed in terms of partial pressure and equals 1.3kPa and the bicarbonate concentration is 2.2 x 10^-3 M, what is the pH of the solution.
Calculate the frequency of the light emitted when an electron in a hydrogen atom makes each of the following transitions.
51.1 g of a substance X dissolves in enough water to make 0.754 L of a 0.579 M solution. Calculate the molar mass of X in g/mol
how much of the CaCl2 can be prepared from 385g of an ore containing Ca(OH)2 if the ore is 78.4% Ca(OH)2 by mass? Use the equation: 2 NH4Cl + 1 Ca(OH)2 --> 2 HN3 + 1 CaCl2 + 2 H20
t 50°C the value of KW is 5.5 x 10-14. What are the molarities of hydronium ion and hydroxide ions in a neutral solution at this temperature.
what would its speed be just before striking the ground? Ignore the effects of air resistance
Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water. MnO4-(aq) + H2C2O4(aq) ? Mn2+(aq) + CO2(g)
The student is supposed to observe the bacterium and make a drawing. However, the student, having just learned about the Heisenberg uncertainty principle in physics class, complains that she cannot make the drawing.
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