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Can an object be at rest if forces are being applied to it? Explain. If no forces are acting on an object, can the object be in motion? Explain. What is the unbalanced force acting on a moving car with a constant velocity of 25 m/s (56 mi/h)?
two allotropes of tin occur near room temp. the first form of tin is gray tin and is stable at temp. below 13.2
Use the free energies of formation given below to calculate the equilibrium constant (K) for the following reaction at 298 K. 2 HNO3(aq) + NO(g) ? 3 NO2(g) + H2O(l) K = ? Delta-G°f (kJ/mol) -110.9 87.6 51.3 -237.1
If a buffer solution is 0.230 M in a weak acid (ka= 3.4x10^-5) and 0.590 M in its conjugate base, what is the pH
I did three trials and my volumes for the sodium thiosulfate were 12.5 ml, 11.1 ml, and 10.2 ml. I am not sure how to get the molarity of the sodium thiosulfate secondary solution for each trial from this information.
Question- Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) = PCl3(g) + Cl2(g). Kc= 1.80 at 250degree Celsius. A 0.212 mol sample of PCl5(g) is injected into an empty 3.00 L reaction vessel held at 250 °C. Calculate t..
Calculate the pH of 0.40 M KNO2. What is the concentration of HNO2 in the solution
Aniline () is an organic base used in the manufacture of dyes. Calculate the in a 0.12 solution of aniline ().
at the beginning of a titration to standardize the naohsolution student a adjusted very carefully the initial
Using the solubility product of AgCl at 25'C (1.6 X 10^-10) calculate ?G' for the process: AgCl Ag+(aq) + Cl- (aq)
Question- Using the recessed bond and protruding bonds, as well as two regular straight-line bonds, draw both mirror images of fluorochlorobromomethane.
compute the molar mass of the noble gas kryptonkr in a natural sample which is 2.2 80 kr molar mass 79.91 gmol 0.84 78
Question- What is the pH after 500 mL of water is added. You will need a calculator with a logarithm function to answer this question.
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