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A gas misture containing oxygen, nitrogen, and helium is trapped inside a vessel and exerts a total pressure of 925 torr. If the partial pressures of oxygen is 425 torr and helium is 75 torr, what is the partial pressure of nitrogen?
a. 400 atm
b. 415 atm
c. 400 torr
d. 425 torr
e. 435 torr
A certain weak base has a Kb of 7.80 × 10-7. What concentration of this base will produce a pH of 10.16
why is it an important concept that atoms generally appear in whole number molar ratios to each other in chemical
Provide me with your exact logic used to get the answer. A mysterious material was purified from safflower oil (hint: full of fatty acids). Upon ozonolysis it gave the following compounds in their respective molar ratios.
How many milliliters of a 330 mL solution of 1.5 M Na3PO4 must be used to make 53 mL of a solution that has a concentration of .5 M PO43-?
A student mixes four reagents together, thinking that the solution will neutralize each other. The solutions mixed together are 53.6 mL of 0.129 M hydrochloric acid, 104.1 mL of 0.215 M of nitric acid, 501.5 mL of 0.0126 M calcium hydroxide
1. What are the shapes of the NMe4+, [I3]- and [I5]- ions? The hybridization of the atoms?
The solution contains twice as many moles of dissolved NaCl as dissolved mgso4, and three times as many moles of LiCl as NaCl. These are the only solutes. what masses of NaCl, MgSO4, and LiCl are contained in 7500 kg of this solution
an equilibrium mixture of pcl5g pcl3g and cl2g has partial pressures of 217.0 torr 13.2 torr and 13.2 torr
Use Hess's law and measure the mean enthalpy changes for the NaOH-HCL and NH3-HCL reactions to calculate the enthalpy change for this reaction
suppose a dna duplex is not self-complementary in the sense that the two polynucleotide strands composing the double
What mass of hydrogen can be produced from 2.90 g of aluminum and 14.0 g of HCl in the above unbalanced reaction?
express the velocity of the electron in the Bohr model for fundamental constants, the nuclear charge Z, and the quantum number n. Evaluate the velocity of an electron in the ground states of He+ ion and U91+.
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