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Problem- Which of the following represents a 100 ppm solution of quinine sulfate?
100 mg of quinine sulfate in 1 liter of water
100 g of quinine sulfate in 1 liter of water
100 g of quinine sulfate in 100 mL of water
100 mg of quinine sulfate in 100 mL of water
Not confident which formulas/units I require to solve something like this
potassium hydrohen phthalate khc8h4o4 functions as monoprotic acid. if a 1.46 g sample of impure khc8h4o4 requires 34.3
The ionization energies of rubidium and silver are 4.18 and 7.57 eV, respectively. Calculate the ionization energies of an H atom with its electron in the same orbitals as in these two atoms and account for the difference in values
A bird is flying around the world at a rate of 8.85 ft/sec. How many days will it take to complete its journey? (circumference of earth = 24,900 miles.
How many grams of oxygen are combined with 75 g of iron to make the iron (II) oxide compound
Rank the following aqueous solutions in order of increasing boiling point: 0.10 mNa2SO4, 0.10 m SrSO4, 0.25 m sucrose, 0.20 m glucose, 0.15 m NaCl
Find out the heat capacity of a calorimeter 105mL of .25 NaCl solution is formed in the reaction HCl + NaOH; H2O + NaCl. Change in enthalpy is -57.86 kJ/mol as well as change in temperature is 3.8 C.
Molten AlCl3 is electrolyzed for 5 hours with a current of 0.40 ampere. Metallic aluminum is produced at one electrode and chlorine gas, Cl2, is produced at the other.
a solid block of exactky 100.0 cm 3 has a mass of 153.6g. determine its density. will the block sink or float on
Use the periodic table to write electron configurations for each of the following elements. Represent core electrons with the symbol of the previous noble gas in brackets. S Ge Zr Sb
It depends on the order of the diffraction (n), the distance between grooves (d) as well as the angle of the emerging light (?). Compute the dispersion at 21° of the first order diffraction for a grating with 1.20 × 103 grooves per centimeter.
Data: C(graphite) + O2(g) => CO2(g) ?H = -393.5 kJ H2(g) + 1/2O2(g) => H2O(l) ?H = -285.8 kJ CH3OH(l) + 3/2O2(g) ? CO2(g) + 2H2O(l) ?H?? = -726.4 kJ Using the data above, calculate the enthalpy change for the reaction below. Reaction: C(graphite) ..
How many grams of potassium chlorate decompose to form potassium chloride and 460. mL O2 at 128°C and 684 torr
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