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An aqueous solution of methylamine (CH3NH2) has a pH of 10.68. How many grams of methylamine are there in 100mL of the solution
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; What are the fractions of muscle and fat in the leg
What are the formal charges on the sulfur (\rm S), carbon (\rm C), and nitrogen (\rm N) atoms, respectively, in the resonance structure that contributes most to the stability of the thiocyanate ion,
A rock is shot vertically upward from the edge of the top of a tall building. with what upward velocity is the rock shot
Determine the following characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) (1a) The initial pH
When a hammer strikes a nail, it is compressed along its length. What average force was exerted on the nail by the hammer
The following objects are released simultaneously from rest at the top of a 1.50m long ramp inclined at 3.50? to the horizontal: Which wins the race
Calculate the pH of 0.525 L of a 0.190 M NH4Cl - 0.190 M NH3 buffer before and after the addition of the following substances. Assume that the volume remains constant
3-methylbut-1-ene ---->3-methyl-2-butanone. For the reagents I put, HBr, Tert butoxide, O3 and dms. I was wondering about the O3 and dms, im not sure if that part is right.
A ball is suspended by a string and moves in a horizontal circle. One such pendulum has a 100g ball at the end of a 1.5 meter long string and has an orbit of radius 30.0cm. Determine the net force a
A gas container with a fixed volume has a pressure of p atm. Gas is then added to the container so that the number of gas particles is the container doubles. What happens inside the container
A turtle ambles lesisurely- as turtles tend to do- when it moves from a location with position vector r1x = 1.07 m, find the magnitude of the turtle's average velocity
Draw the structure of the product(s) of the reaction between (R)-3-methylhexan-2-one and phenylmagnesium bromide, followed by acidification. Use wedge and dash bonds to indicate stereochemistry. If
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. What is the work done on the jet by the catapult
write ground-state electron configurations for these ions, which play important roles in biochemical processes in our bodies. (Use a noble gas core abbreviation)
A person pulls a toboggan for a distance of 39.7 m along the snow with a rope directed 33.0 ° above the snow. How much work is done on the toboggan by the tension force
Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. [silver nitrate and cobalt(II) iodide]
A person pushes a 13.6-kg shopping cart at a constant velocity for a distance of 33.1 m on a flat horizontal surface. find the magnitude of the force that the shopper exerts
What is the molar solubility of Fe(OH)3(s) in a solution that is buffered at pH 2.50 at 25 degrees C? The Ksp of Fe(OH)3 is 6.3 x 10^-38 at 25 degrees C.
Compound A, C12H22O, undergoes reaction with dilute H2SO4 at 25 °C to give a mixture of two alkenes, C12H20. The major alkene product, B, gives only cyclohexanone after ozone treatment followed
A 17-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 32 N. Find the coefficient of kinetic friction between the runners of the sled and the snow
The solubility of PbI2 in water is 0.62 g in 1.0 L of water at 25 degrees C. What is the value for Ksp for PbI2
The 4.83- kg weight that drives the time mechanism of a grandfather clock descends 27 cm in exactly 24 hours.
Draw the structure of the product(s) of the reaction between (R)-3-phenylbutan-2-one and ethylmagnesium bromide, followed by acidification. Use wedge and dash bonds to indicate stereochemistry.
(a) In the electrolysis of aqueous Na2C2O4, how many liters of CO2(g) (at STP) are generated by a current of 89.9 A for a period of 53.0 min? The unbalanced chemical reaction representing this elect