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Ka for HCN is 4.9 × 10-10. What is the pH of a 0.068 M aqueous solution of sodium cyanide?
Disulfur dichloride is produced by reacting chlorine gas with molten sulfur. What is the percent yield if 3.25 g S2Cl2 is isolated from the reaction of 5.0 g S8 and 3.75 g Cl2
Suppose that the microwave radiation has a wavelength of 10.8 . How many photons are required to heat 205 of coffee from 25.0 to 62.0 ? Assume that the coffee has the same density, 0.997 , and specific heat capacity, 4.184 , as water over this tem..
how much energy is liberated when 366 g of mercury c0.139jg degrees celsiuscools from 77.0 to 12.0 degrees
If 1.13 x 104J of heat is added to a water sample and the temperature rises from 88.0c to its boiling point, what mass of water is in the sample?
3 compounds xyz were found to contain the same empirical formula that is the same number of c ho. however compound x
Into what type of unit cell (i.e., simple cubic, face-centered cubic, or body-centered cubic) does this material crystallize? Be sure to fully support your answer. The apparent atomic mass is 120.5 amu. Remember that 1 amu = 1.660538783 × 10!24 g.
find the number of representative particles in each given substance 1 3.00 mol sn2 0.400 mol kcl3 7.50 mol so24 4.80 x
with wet beriberi, peripheral vessels dilate and cardiac muscle looses its contractility. also, alpha-ketoglutarate is found in high concentrations. this is thought to be caused by
a graduated cylinder contains 110. ml of water. a 10.0 g piece of iron density 7.86 gcm3 and a 18.9 g piece of lead
The most probable mechanism of reactivity for the solvoysis of 2-chloro-norbornane is: a. Sn1 b. Sn2 c. E1 d. E2 The reaction for this secondary compound was very slow going compared to solvolysis of benzyl chloride
Calculate ?H for the reaction 2C(s) + H2(g) ? C2H2(g) given the following reactions and their respective enthalpy changes
Write a balanced titration reaction. (b) Write two different half-reactions for the indicator electrode.
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