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Given the concentration of either hydrogen ion or hydroxide ion, use the ion product constant of water to calculate the concentration of the other ion at 298KA. [H+]= 1.0*10^-4B. [OH-]=1.3*10^-2for A do you subtract 1.0*10^-14? and for B do you divide 1.0*10^-14 and 1.3*10^-2
Microwave radiation of wavelength 4.00 mm is used to heat 250.0 grams of water from 10.6 degrees C to 100.0 degrees C. How many photons are needed?
Does purified aspirin appear to be purer than crude aspirin? What is your evidence?
Express the molar concentration numerically using two significant figures. What is the final concentration of D at equilibrium if the initial concentrations of A = 1.00M and B= 2.00M
Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point constant is 5.03°C · kg/mol, and the boiling point of pure carbon tetrachloride is 76.50°C.
Compute the changes in the degree of polymerisation and the rate of the polymerisation caused by raising the temperature of polymerisation of styrene in C6H6, initiated by azobisisobutyronitrile from 60 0C to 70 0C.
A zero-order reaction has a constant rate of 1.70×10-4 . If after 65.0 seconds the concentration has dropped to 7.00×10-2 , what was the initial concentration?
Give the shape of each molecule in problem and describe whether each molecule is polar or non polar and tell whether each is soluble or insoluble in water
If a 220 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.3*1.0 ft. , what is the average thickness of the sheet in meters?
what is the freezing point(Degrees C) of a solution prepared by dissolving 11.3g of Ca(NO3)2 ( formula weight= 164g/mol) in 115g of water?
Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 100.0 mL of 0.20 M NH3. The Kb for NH3 is 1.8 x 10-5.
The pH of a bicarbonate-carbonic acid buffer is 8.00. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
Sodium peroxide (Na2O2) reacts with water to form sodium hydroxide and oxygen gas. Write a balanced equation for the reaction and determine how much oxygen in grams
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