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How many grams of potassium bromide can be formed if 12.3 g of bromine react with an excess amount of potassium iodide? Br2(l) + 2 KI (aq) --> 2 KBr(aq) + I2(s)? I just need some help setting the problem up.
Given that mass was lost from the copper carbonate hydrate during heating, in this decomposition reaction, how many moles of solid product were produced? The molecular weight of the solid product is 79.545 g/mol (moles = mass / molecular weight).
When NEM is added to a solution of creatine kinase, Cys 278 is alkylated, but no other Cys residues in the protein are modified. What can you infer about the role of the Cys 278 residue based on this information
a 25- sample of an alloy at 98 is placed in 50. water at 19.if the final temperature reached by the alloy sample and
a 120-pound person uses 3 calories per minute walking at a 20 minmile pace. approximately how many miles would a person
If 2.50 g CuSO4 are dissolved in 8.0 x 10^2 mL of 0.25 M NH3, what are the concentrations of Cu2+, Cu(NH3)4^2+, and NH3 at equilibrium
The initial rate of the following reaction when [A]=[B]=0.200M is 5.00X10^-3 M/s, What wil the rate be after 0.040M of A reacts with B?
The following data were obtained for the determination of iron in serum by a spectrophotometeic method. Assuming the validity of Beer's Law for the experiment calcualte the concentration of iron in serum
What is the velocity of an electron that has a de Broglie wavelength approximately the length of a chemical bond? Assume this length to be 2.9×10?10m
predict if the following conditions would result in the formation of a preecipitatea. 0.0025 m fe3 at ph 6.00b. 0.0025
In a titration experiment, 50.0 mL of 0.375 M HI solution is required to neutralize 35.0 mL of Ca(OH)2 solution. What is the concentration of the Ca(OH)2 solution?
The combustion of 45.0 g of methane (natural gas) releases 2498 kJ of heat energy. How much energy in kilocalories kcal would combustion of 0.670oz of methane release.
Question- Strong base is dissolved in 525 ml of 0.200 M weak acid (Ka = 3.94*10^-5) to make a buffer with a ph of 4.20. Assume that the volume remains constant when the base is added. How many moles of strong base were initially added
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