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Below are five statements about the temperature dependence of a reaction rate constant K. Which one statement holds true for most chemical reactions?
1) increases with temperature, mainly because there are fewer collisions per second.2) increases with temperature, mainly because a higher proportion of the collisions are energetic enough to produce reaction.3) decreases with temperature, mainly because of the decrease in effectiveness of the attractive long-range intermolecular forces.4) does not change with temperature.5) increases or decreases with temperature, depending on whether the reaction is endothermic or exothermic.
Use probability-proportional-to-size method
An object has an equation of motion given by x = -2t^2 + 2t - 5. What is the displacement of the particle from t = 1s to t = 3s? What is the average velocity over that time range
An alkaline D-cell has a voltage of 1.4V and is rated as 11,000mAh. Find the total charge available from the battery
A rock is dropped from a bridge to the water below. It takes 2.4 s to hit the water. Find the final speed of the rock when it hits the water. How high is the bridge above the water
Carlos Arruza Company exchanged equipment used in its manufacturing operations plus $10,164 in cash for similar equipment used in the operations of Tony LoBianco Company. The following information pertains to the exchange.
Can someone please explain the chemistry of lidocaine synthesis to me. We made lidocaine in the lab and used 2,6 dimethylaniline, glacial acetic acid, chloracetyl chloride, sodium acetate, toluene, diethtylamine, hexane, HCL, potassium hydroxide a..
water has a mass per mole of 18.0 g/mol, and each water molecule (H20) has 10 electrons. what is the net charge of all these electrons
The annual production of zinc sulfide (ZnS) is 5.5e4 tons. Estimate the number of tons of SO2 produced by roasting it to extract zinc metal.
Daisy takes out an insurance policy on her own life. Daisy designated her eldest child as the beneficiary. Daisy has come to you for advice with respect to two issues relating to this policy. First she wants to know if she died today, would the..
The Ksp for AgBr is 4.1 X 10-13. Will a precipitate form if 25 ml of 3.45 X 10-8 M AgNO3 solution is mixed with 25 ml of 4.65 X 10-5 M NaBr solution
Calculate the aqueous solution with the highest freezing point. These are all solutions of nonvolatile solutes and you should assume ideal Van't Hoff factors where applicable
Medical technicians use deoxyglucose labeled with fluorine-18 to locate tumors using a pet scan. A medical technician injects a patient with a therapeutic dose of fluorine-18.
it says that isothiocyanatech3ncss carbon atom actively responses to material that has nonbonding electronsuch as oh-.
Cv and Cp denote the molar specific heat capacities of a gas at constant volume and constant pressure, respectively. Then (A) Cp âˆ' Cv is larger for a diatomic ideal gas than for a monoatomic ideal gas.
How many calories of heat are necessary to raise the temperature of 350 ml of water from 1.00oC to 5.00oC.
if 836.8 Joules are added to 25 grams ammonia at 37 degrees Celsius, what will the final temperature be?
consider the following reaction; 3 NO2 + H2O-2HNO3 + NO. what volume of water is needed to produce 2.00 kg of HNO3? (the density of water= 1.00 g/ml). the number of hydrogen atoms in 25 g of C6H1206 is
Calculate the density of a block.
What mass (in grams) of solid sucrose (C12H22O11) would need to be added to 2000 grams of water to make an ideal solution with a boiling point of 102.9°C? (Kb for water is 0.512°C/m)
What is the molality of a solution in which 15g of I2 is dissolved in 500g of alcohol?
For each of the following species, draw its Lewis-dot structure. If the species exhibits resonance, draw all the resonance hybrids. For each species, tell its shape, bond angles, hybridization of the central atom, and whether it is polar or nonpola..
The first ionization energy of bismuth is Ei1=+703 KJ/mole. What is the longest possible wavelenghth of light that could ionize an atom of bismuth?
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