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A solution contains 0.063g of oxalic acid, H2C2O4*2H2O, in 250 mL. What is the molarity of this solution?
One method of determining the refractive index of a transparent solid is to measure the critical angle when the solid is in air. what is the index of refraction of the solid
Two concentric current loops lie in the same plane. The smaller loop has a radius of 3.0 and a current of 12. What is the radius of the bigger loop
Calculate the price elasticity of demand for the following demand function
A student determined the Ca^2+ ion content of a 100 mL sample of calcium-fortified orange juice. After adding 2.0 M HCl solution to the sample, the student filtered the juice to remove the pulp and other particulate matter.
The accepted value for the suns intensity at the earth is measured on an area with its normal along the suns "ray". Calculate the temperature of the sun
A car with mass 1000kg traveling east at 25 (m/s) runs straight into a truck with mass 1500kg traveling west at 10 (m/s). How far do the vehicles slide
What are the firm's maximum profits?
The equilibrium constant for a certain reaction decreases from 8.51 to 3.3e-2 when the temperature increases from 24°C to 73°C. Estimate the temperature where K = 1.00 for this reaction. T in Kelvin.
To determine the location of her center of mass, a physics student lies on a lightweight plank supported by two scales 2.50M apart, Find the students mass
A 14.1- resistor, a 11.8-?F capacitor, and a 18.8-mH inductor are connected in series with a 121-V generator. At what frequency is the current a maximum
Calculate the equilibrium partial pressures of all species when CO and Cl2, each at an intitial partial pressure of 1.53 atm, are introduced into an evacuated vessel at 600 K.
How many mL of 0.525M calcium chloride are needed to obtain 5.00x10 22 chloride ions.
Describe the effect of this on [CH3COOH] and [CH3COO-] (their concentrations). Account for your answer in terms of number of moles of protons transferred. Also, has the capacity of the buffer been exceeded? Explain.
Identity the species with the larger radius in each of the following pairs. Use the concept of effective nuclear charge to explain the difference in radius for each pair. a) Cl or S b) Cl- or S2- c) Na or Mg d) Mg2+ or Al3+
What molarity of aqueous magnesium chloride solution can be expected to show the same conductivity
caffeine is about 10 times as soluble in hot water as in cold water, a chemist puts hot water extract of caffeine in to an ice bath and some crystallizes. is the remaining solution saturated unsaturated or supersaturated and why?
What is the percent ionization of a 0.177 M solution of this acid?
If 0.384 moles of Zinc reacts with excess Lead(IV) sulfate, how many grams of zinc sulfate would be produced in the following equation?
What would the appropriate substrate concentration be? b) At what substrate concentration would you expect 30% of the enzyme molecules to have substrate bound?
Calculate the final temperature of the solution, assuming the delta H reaction for HCl + NaOH = -56.2 kJ/mole and that the solution's specific heat is the same as water: 4.184 J/g Celsius.
If a chemistry student collected 834 mL of gas at 25 degrees C and 8.00 x 10^2 torr, how many moles did she collect?
A solution of I2 was standardized with ascorbic acid. Using a .1000 g sample of pure ascorbic acid, 25.32 mL of I2 were required to reach the starch end point. A. What is the molarity of the iodine solution? B. What is the titer of the iodine solu..
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