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Question: What is the difference between an Antenna and ideal Antenna.
explain how many grams of sodium hydroxide should be added to the solution to produce a concentration as close as possible the desired 0.1000 M? Presume that the sodium hydroxide is carbonate-free.
Four wavelengths of light are each quantized to excite electrons of a given atom to a particular higher energy shell. Assign wavelengths of 496nm, 356nm, 701nm, and 591nm
we have a solution andnbsp 26.38 g sodium chloride in this solutionnbsp has a total volume of 1780 ml amp density
which element has the greatest density at STP? and why?
Consider the following system which has been shown to be spontaneous at 298K and select the true statement below. the ?S for the system is predicted to be negative, so therefore the ?S for the surroundings must be positive to a greater extent so tha..
Classify as to what type of chemical reaction each one belongs:
the hydrogen atom relaxes to a lower energy level, emitting light of 397nm. What is the value of n for the level to which the electron relaxed
Problem- Suppose sodium hydroxide was added to a 0.0057 M solution of zinc nitrate wuch that the pH of the solution is 12.89. What is the equilibrium concentration of Zn^2+
Problem- Draw two or three resonance forms for each of the following species. Indicate the major contributor or contributors to the hybrid in each case.
How many grams of solid calcium hydroxide Ca(OH)2 are required to prepare 200 mL of a 0.05 M solution. Molar mass (formula weight) of Ca = 40.1 g/mol, O = 16.0 g/mol, and H = 1.01 g/mol.
What is the molar composition of the dense gas and it's chemical formula? What is the element name and identity and atomic mass of the grey substance
calculate the number of excess reagent units remaining when 84 C2H4 molecules and 270 O2 molecules react?
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