03/02/24

Using the Kf and Kb equations with electrolytes

A certain liquid X has a normal freezing point of 7.40°C and a freezing point depression constant Kf=2.41°C•kf•mol^-1.A solution is prepared by dissolving some ammonium sulfate((NH4)2SO4) in 700.g... more
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02/27/24

helpp!! :) Calculus
Find the equations of all lines that are tangent to the graph of the function f(x) = x ^ 2 + 1 and pass through the point P(1,0). Be careful: this point is not on the graph of f.
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02/26/24

AP Physics Ladder Problem
 A clerk is going up a ladder. The clerk's weight is 450N, and the ladder's weight is 200N. There is negligible friction between the ladder and the wall. The angle between the ladder and the floor... more
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02/21/24

gen chem 2 question
Using your measured [H+] in 0.100 M acetic acid, which is 0.01413 M, determine the fraction of acetic acid molecules that are ionized in the solution.
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02/16/24

Does the vibrations of molecules and atoms microscopically in a solid cause the solid object as a whole to vibrate?
We are told that atoms and molecules vibrate microscopically in a solid. Does that mean the solid object as a whole vibrates, for instance, a nightstand or table?
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02/16/24

Can some1 help me with chem😞
Given N2 + 3F2 —> 2NF3: how many miles of NF3 are produced from 0.15 mol of F2? How many grams of NF3 are produced
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02/15/24

A solution is made using 200.0 mL of methanol (density 0.7920 g/mL) and 789.1 mL of water (density 1.000 g/mL). What is the mass percent of the methanol?
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02/15/24

Please help- heat conduction and Newton's law of cooling
Criterion: The heat transfer coefficient is the same for the freezer and the refrigerator.Two bowls of the same size are filled with room-temperature coffee and then placed one in the freezer and... more
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02/15/24

physics towbar question
A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 23.9∘∘ with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the... more
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02/13/24

Chemical Kinetics using Integrated Rate Laws
Some reactions are so rapid that they are said to be diffusion-controlled; that is, the reactants react as quickly as they can collide. An example is the neutralization of H3O+ by OH−, which has a... more
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02/12/24

Consider 2.00 mol of an ideal gas with a constant-volume molar specific beat of 12.5 1/(mol-K), an initial

Consider 2.00 mol of an ideal gas with a constant-volume molar specific beat of 12.5 1/(mol-K), an initial temperature of 22 8 °C, and an initial pressure of 5 610 x 10 Pa. The state of the gas is... more
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02/11/24

Calculate the pressure
The rate constant for the low pressure decomposition of N₂O₄(g) is 3.60 × 10⁴ L･mol⁻¹･s⁻¹ at 250 K. If the initial pressure of N₂O₄(g) is 35.0 torr at 250 K, calculate the pressure of N₂O₄(g)... more
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02/11/24

Buffer Solution Calculation
A buffer solution was prepared by adding 0.345 mol of sodium fluoride to 1.35L of 0.0619M hydrofluoric acid solution. Determine [H3O+] at equilibrium in this buffer. Assume that the volume of the... more
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02/11/24

What is the silver ion concentration in a solution prepared by mixing 341 mL 0.388 M silver nitrate with 375 mL 0.506 M sodium chromate? The Ksp of silver chromate is 1.2*10^-12

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02/09/24

question is in the description

The decompostion of N2O5 can be described by the quation, 2N2O5(soln)->4NO2(soln) + O2(g)consider the data table for the reaction at 45 degrees celcius in carbon tetrachlorideData... more
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02/09/24

Could Someone Please Help Me Solve This Statistics Problem?

The Question: For this assignment, you will create and use a probability distribution that reflects rolling a pair of dice. First, construct a probability distribution for rolling 5's, displaying... more
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02/09/24

Activation Energy

Calculate the activation energy of a reaction if a temperature increase from 25.0 °C to 55.0 °C triples the rate constant. R = 8.3145 ×10⁻³ kJ/mol･K.
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02/09/24

Integration By Parts Calculus Question
Find the integral ∫(x^pi)(lnx) dx using integration by parts. Carefully explain all steps.
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02/07/24

Physics-Watt and Calorie problem (please help explain this to me-very lost)
In an average human, basic life processes require energy to be supplied at a steady rate of 100 W. What daily energy intake, in Calories, is required to maintain these basic processes?
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01/30/24

Gas Stoichiometry
Please consider the following UNBALANCED reaction for the decomposition of trinitroglycerin: C3H5N3O9 = N2 + CO2 + H20 + O2. What mass of trinitroglycerin would be required to produce 50 L o2 if... more
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01/30/24

Determine a region whose area is equal to the given limit. Do not evaluate the limit.
A). √(1+x) on [-3,3]B). 3√(1-x) on [0,3]C). √(1+x) on [0,3]D). 3√(1+x) on [-3,3]E). 3√(1+x) on [0,3]Please show the whole process step by step.
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01/30/24

Find the magnitude and direction of the gravitational field at point D in the diagram below. Assume that points A, B, and C have the same mass and that each square represents 1m.
Find the magnitude and direction of the gravitational field at point D in the diagram below. Assume that points A, B, and C have the same mass and that each square represents 1m.Point A... more
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01/30/24

Evaluate the integral
∫(from 0 to √(3)/4) dx/(1+16x2)
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01/27/24

Help with Exact Equation Problem

I need help solving this exact equation problem:x(xy+1)y' + y(xy+1) = 0I solved the problem up to the function with respect to y and got this:fy(x,y) = x^2/2 + x + h'(y)I am not sure how to go from... more
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01/26/24

Write an equation of the line that passes through the given point and is (a) parallel and (b) perpendicular to the given line.
Write an equation of the line that passes through the given point and is (a) parallel and (b) perpendicular to the given line.
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