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Using your knowledge of metric units, English units, and the information on the back inside cover, write down the conversion factors needed to convert
Calculate the molarity and the molality of an NH3 solution made up of 37.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
Solid aluminum reacts with chlorine gas to produce solid aluminum chloride. If 2.70 grams of aluminum and 4.05 grams of chlorine gas were mixed, what maximum mass of aluminum chloride could be produced?
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of Pb(OH)42-(aq) will be- BrO3-(aq) + Pb(OH)42-(aq) --> Br-(aq) + PbO2(s)
The specific heat of an unknown metal is 0.230 j /gc. A 45.0 g sample of the metal is heated from 25.0 c to 58.0 c. Explain how much heat is needed to accomplish this
Problem- A buffer is prepared from 0.25 mol benzoic acid and 0.15 mol sodium benzoate in 500 mL solution. a. What is the pH of the buffer? b. If 6.2 g of KOH are added to the buffer will the capacity be exceeded? c. Calculate the pH after KOH addi..
The mole fraction of substance A is 0.35. At 32 degrees C the vapor pressure of pure A is 87mmHg as well as the vapor pressure of pure B is 122 mmHg. Explain what is the total vapor pressure of the solution at this temperature
Depict the chair conformations for cis -1, 4-dimethylcyclohexane, predicts strains, and identifies the more stable conformers.
Electrolysis of a solution of CuSO4(aq) to give copper metal is carried using a current of 0.66 A. How long should electrolysis continue to produce 0.50 g of copper
Natural selection occurs and doesn't result in evolution when a phenotypic trait is variable but it is not heritable therefore it won't result in a chnage in the trait's value over time. What are some examples of this? And are there any other ways na..
assume you are performing the calibration step of experiment 8 and you begin with 70 g of water at 20 ocand 70 g of
what is the expected boiling point of a solution that contains 25.0g of glucose c6h12o6 in 250.0 g of h2o? kbp 0.51
A 2 mL sample was taken of a solution of barium iodate at 10 degree C. the sample was mixed with 2 mL of 0.5 M KI and 2 mL of 1M HCl. The transmittance of the mixture was read and compared to a calibration curve which indicated a concentration of ..
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