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Problem- A 45 mL sample of 0.015M calcium chloride is added to 55mL of 0.010 M sodium sulfate. Is a precipitate expected? Explain.
Should reply all parts for five stars
A blend of polyethylene and PVC contains 10 wt °/. PVC. What is the molecular percentage of PVC
The stable allotropic form of phosphorus is P4, in which each P atom is bonded to three other P atoms. Draw a Lewis structure of this molecule and describe its geometry.
Calculate K for 2NO(g)+O2(g)=2NO2(g) from the observation that when equilibrium is established at 500K, there are 0.190 moles NO2, 2.65x10^-4 moles NO, and 0.606 moles O2 in a volume of 0.759 liters.
a 40-year-old manager at a prominent legalfirm in l.a. experiences abdominal pain post lunch. he goes to therestroom a
At 25°C and 765Torr carbon dioxide has a solubility of 0.0342 M in water. Explain what is its solubility at 25°C and 1470Torr
Calculate E for the cell. Assume all the H+ ions come from the first dissociation of H2SO4, which is complete.
An electron in the ground-state He+ ion undergoes a transition to a state described by the wavefunction R4,1(r)Y1,1(?,). (a) Describe the transition using term symbols. (b) Compute the wavelength, frequency, and wavenumber of the transition.
what are the names of the products in this equation?
A 0.0623g sample of cobalt sulfate was dissolved in dilute HCl and treated with 10% BaCl2 solution. The BaSO4 precipitate weighed 0.1075g. Determine the formula of this sulfate of cobalt.
provide the chemical reaction of an oxidation-reduction reaction that was observed to be spontaneous. provide a value
a 3 ft3 adiabatic rigid container is divided into two equal volumes by a thin membrane. initially one of these chambers
gold can be hammered into extremely thin sheets called gold leaf. if a 1.00-g piece of gold density 19.32 gcm3 is
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