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Town A and Town B lie approximately on the same meridian. Town A has latitude 55° N and Town B,50° N. Find the distance between these two cities. (The radius of the Earth is 3960 miles.) (R
For the decomposition of solid ammonium chloride into ammonia gas and hydrogen chloride gas Kp = 1.1 x 10-16. Calculate the change in standard free energy for this decomposition reaction.
Why is it necessary to wear clean, protective clothing when caring for a patient? Why should hair be kept clean and out of the way when caring for patients?
Expansion of any term is not necessary; proper recognition of the form of the expression leads to the proper result.
In what areas of the hospital must the numbers of microorganisms in the environment be strictly reduced to the minimum?
What is the molar concentration of a solution prepared by dissolving 0.100 moles of potassium nitrate in enough water to prepare 400 mL of the solution?
Explain what is meant by "indicator" organisms when testing a water sample. What are the media used to determine the presence of the indicator organisms?
If 0.0100 mol of HCl gas is bubbled into 500 mL of the buffer, what is the new pH of the solution?
Complete combustion of 4.80 g of a hydrocarbon produced 14.7 g of CO2 and 7.02 g of H2O. What is the empirical formula for the hydrocarbon?
Suppose sin(θ) = 8/17 for θ in Quadrant II. Find the values of the other trigonometric functions of θ.
How many moles of sodium hypobromite (NaBrO) should be added to 1.00 L of 0.055 M hypobromous acid (HBrO) to form a buffer solution of pH 8.95? Assume that no volume change occurs when the NaBrO is
Find the values of the trigonometric functions of θ if tan(θ)= 88/105.
(a) How many grams of Na2SO4 are there in 15 mL of 0.50 M Na2SO4? (b) How many milliliters of 0.50 M Na2SO4 solution are needed to provide 0.038 mol of this salt?
Suppose cot(x) = -6.5 and sin(x)<0. Find the following quantities (you can use .5 instead of a square root in a numerical answer.
The molar heat of neutralization from hydrochloric acid and sodium hydroxide is -57.3 kJ/mol. use this accepted value to predict the heat evolved during the neutralization of 655 ml of 1.00 M hydro
At 400 K, the rate of decomposition of a gaseous compound initially at a pressure of 12.6 kPa, was 9.71 Pa/s when 10.0 % had reacted and 7.67 Pa/s when 20.0 % had reacted. Determine the order of rea
Write the function in terms of the cofunction of a complementary angle. Csc(5pi/12)
Find all solutions to the following equation on the interval [0,2pi)
Is anyone willing to write out the steps and explain them to me? My test is on Thursday and I'm still having trouble with these problems.
The terminal side of ? lies on a given line in the specified quadrant. Find the values of the six trigonometric functions of ? by finding a point on the line.
A 1.71 mol sample of Ar gas is confined in a 41.9 liter container at 25.7 C. If the volume of the gas sample is decreased to 15.3 L holding the temp constant, the average molecular speed will increa
Question: Xenon gas is released during a certain chemical reaction and pushes back the atmosphere with a change in volume of the vessel (it has a movable piston) from 2 to 20 Liters. Calculate the w
Use the funamental identities and simplify each expression to get a numerical value. Please show all steps that you use to solve.
Find the vertex of the parabola defined by the function y=4x^2+2x-3 by completing the square.
You have worked with various functions now. How can you tell if a function is even or odd? Graphically, what does an even function do? Graphically, what does an odd function do?