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A teacher interested in determining the effect of a new computer program on learning to read conducted a study. One hundred students were randomly assigned to one of two groups. The first group used the computer program while the second group did not. Both groups were tested to determine how much their reading levels improved. The results for the two groups were compared. What kind of study is this?
If the initial concentration of A=2.5 mol/L, the initial [B]=1.4 mol/L, and the rate =0.29 moles of product per liter per minute (M/min). Calculate the rate constant K to 2 decimal places.
A material contains a high concentration of BaO and Al2O3. If its composition were changed to reduce the BaO concentration, and increase the SiO2 concentration. Would viscosity at some given temperature be higher or lower with the new concentratio..
assuming the unknown acid has one acidic proton per molecule, what is the molecular formula of the unknown acid?
Liquid nitrogen trichloride is heated in a 2.88-L closed reaction vessel until it decomposed completely to gaseous elements. The resulting mixture exerts a pressure of 766 mmHg at 75°C.
In the reaction below, 6.76 atm each of Cl2 and I2 were placed into a 1.00 L flask and allowed to react: Cl2(g) + I2(g) 2 ICl(g) Given that Kc = 45.9, calculate the equilibrium pressure of Cl2.
Define what is the product for Benzene + (benzene ring attached to a carbon which is single bonded to another carbon which is double bonded to an oxygen and single bonded to a Cl) all in the presence of a ALCL3 catalyst
Why is the injector/detector temperature set at 180 C while the column temperature is only at 90 C and why is it possible to inject the sample directly with a syringe onto the top of the column in GC but not HPLC
calculate the total amount of heat energy that must be removed to convert 34.0g of steam to water at 25 Celsius
a compound contains 78.14 boron and 21.86 oxygen. determine the empirical formula for this compound. need help
(a) The volume of this balloon will (increase/decrease) (slightly/dramatically). In thisexperiment (pressure/temperature/amount of gas) (is/are) constant. (b) Calculate the new volume using the ideal gas law.
A mixture of butene and butane burn in the air to give CO2 and H2O.suppose u burn 2.86g of the mixture and obtain 8.80g of CO2 and 4.14g of H2O.
a) A particular chip snack food is composed of 11% protein, 10.% fat, and the rest carbohydrate. What percentage of the calorie content of this food is fat in%? b) How many grams of protein provide the same fuel value as 40. g of fat in g?
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