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In the presence of excess thiocyanate ion, SCN-, the following reaction is first order in chromiumi (III) ion, Cr3+; the rate constant is 2.0 x 10-6/s.
If 85.00% reaction is required to obtain a noticeable color from the formation of the Cr(SCN)2+ ion, how many hours are required?
When 40 mL of 0.500 M HCl is titrated with 0.600 M NaOH, the pH increases. What is the pH of the solution after 33 mL of 0.600 M NaOH has been added. (assume volumes are additive)
The original amounts for the reagents with 0.5g of starting material (4-cyclohexene...) was 5mL water, 0.2g decolorizing carbon. 1.5mL of 1M sodium borohydride, 0.5mL of 5%chloroplatinic acid, and 2mL concentrated HCl.
A solution is prepared by dissolving 3.00 g of an unknown nonelectrolyte in 20.00 g of cylcohexane (tf = 6.6 oC and kf = 20.0 oC/m). What is the molar mass of the unknown compound if the solution has a freezing point of -6.4 oC
A sample of argon gas collected at a pressure of 761 mm Hg and a temperature of 283 K has a mass of 32.2 grams. The volume of the sample is. answer in L please.
Determine the new volume of a 1.3 L balloon if it is taken from room temperature that is twenty five degree celsius and placed into a freezer at the temperature of -11.5 degree celsius.?
when metabolized an orange provides 445 kj of energy. what mass of water could this amount of energy raise from 25.0
we learned that an acyl chloride and amine can react to form an amide. however im wondering if another amine can then
How do you determine which methyl group gets the equatorial position in an 1-4 disubstituted isomer? (Assuming the methyl groups are different. For example, one is ethyl and the other is methyl).
Assign an oxidation state to each element in each compound. Express all answers as a signed integer. 1. Na3PO4 2. Hg2S 3. Fe(CN)3 4. NH4Cl
write balanced molecular ionic and net ionic equations for the reactions of chromium gives cr3 with solution of dilute
a liquor of 20.00 ml a of 0.120 m cu solution is titrated with a 0.100 m solution of ce4 according to the given
when 31g of phosphorus reacts with oxygen, 71g of an oxide phosphorus is the product. What mass of oxygen is needed to produce 13g of this product?
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