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The weight of an object is the product of its mass, m, and the acceleration of gravity, g (where g=9.8 ~\rm m/s^2). If an object's mass is m=10.~\rm kg, what is its weight
For a hypothetical gas-phase reaction that is second order in A and third order in B, by what factor does the rate change if pA is decreased by 4 times and pB is doubled
A particular first-order reaction has a rate constant of 1.35 × 10^2 s-1 at 25°C. What is the magnitude of k at 75°C if Ea = 85.6 kJ/mol?
How much heat energy, in kilojoules, is required to convert 73.0 g of ice at -18.0 0C to water at 25.0 0C ?
Tuning proton affinity. The pKa of an acid depends part,y on its environment. Predict the effect of each of the following environmental changes on the pKa of a glutamic acid side change.
Cesium ions are added to flood the flame with electrons. It needs to be in a large concentration, larger than what is being measured.
Assuming that the smallest measurable wavelength in an experiment is 0.410 fm (femtometers), what is the maximum mass of an object traveling
Established in a container of 1.0 Litre at a temperature of 1,000 K, where K c = 4.0 ⋅ 10NH 3 (g) are present. Calculate What is the equilibrium concentration of H 2 (g).?
Determine the theoretical yield and percent yield if 21.8g of K2CO3 is produced by reacting 27.9g KO2 with 29.0L of CO2 (one mole of CO2 occupies 22.4L). The GFW (KO2)= 71.10 , GFW (K2CO3)= 138.21 , GMW (CO2)= 44.01
Organic Reactions - Cyclopentadiene, Why is cyclopentadiene monomer more stable at higher temperatures although dicyclopentadiene (dimer) is more stable at lower temperatures?
sodium chloride dissolved in 225 g of water has a density of 1.98g/ml. Calculate the molarity of sodium chloride.
Calculate the resulting pH if 150 mL of 1.50 M HClO4 is mixed with 500 mL of 0.125 M Ba(OH)2.
Identify the charged groups in the peptide shown below at pH=1 and at pH=7. What is the net charge of this peptide at these two pH values? val-met-ser-Ile-phe-arg-cys-tyr-leu
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