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A gaseous mixture of O2 and Kr has a density of 1.114 g/L at 431 torr and 325 K.What is the mole percent O2 in the mixture?
61.0 mL of a solution(1.60 M) is diluted to a volume of 208 mL. A portion of that solution(104-mL) is diluted using 121 mL of H 2 O. determine the final concentration?
The mass of a cube of iron is 292 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions.
Find the reaction order using a Powell plot or the fractional-life method and also estimate the rate constant
Properties of subatomic particles - Fill in the missing relative masses and relative charges for each of the subatomic particles
Determine how many grams of copper sulphate are there in 219 grams of an aqeous solution that is 20.2% by weight of copper sulphate?
Find molarity, molality, percentage composition, boiling and freezing point of a solution - What are the boiling and freezing points of the solution?
Determine the numbers of oxygen molecules are required for each molecule of C 6 H 12 O 6 glucose that is oxidized if Glucose is oxidized by molecular O 2 to CO 2 and H 2 O?
The reported values for one compound (CaHbOc) were as follows: mass: 214.1360 g/mol; percent C and H: 84.07 and 8.47, respectively. Determine the molecular formula of the compound.
Explain the use of nuclear isotope in medical field and Write a paragraph expaining what nuclear isotope can be used for medical purpose
Zinc has two isotopes. Zn-64 has an atomic mass of 63.9292amu and Zn-72 has an atomic mass of 71.9278amu. Its average atomic mass is 65.38amu. Calculate the abundance, in percent, of Zn-64.
A nugget of pure gold of 4.80 grams absorbed heat of 283 Joules. if the temperature was 23.0°C initially then determine what was the final temperature of the Au gold it is given that the specific heat of Au= 0.129 J/(g·°C).
If vitamin A is 83.86% Carbon and 10.56% Hydrogen by mass then determine the the molecular formula this vitamin A.?
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