02/07/23

Redox chemistry

Calculate the Eo cell for the redox reaction shown below in volts:3K(s)+Cr+3(aq)→3K+1(aq)+Cr(s)3Eocell=Eocathode+Eoanod
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02/07/23

Conversion of Energy

Amy, who has a mass of 68 kg, is riding her bicycle in the country. She is traveling at 11m / s when she begins to coast down a hill. She then coasts up another hill that is 15 m high and comes to... more
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02/06/23

Gibbs Free Energy and Partial Pressure

1. The following reaction is at equilibrium  H2(g) + CO2(g) ⇔ H2O(g) + CO(g)a. Determine the free energy change, ΔG°, at T = 298... more
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02/06/23

How many grams of water are produced by the combustion of 4.00 kg of propane
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02/06/23

need help please
About 9% of the population has a particular genetic mutation. 300 people are randomly selected.Find the standard deviation for the number of people with the genetic mutation in such groups of 300.... more
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02/06/23

An observer in a lighthouse 350 feet above sea level observes two ships directly offshore. The angles of depression to the ships are 𝛽 = 7° and 𝜃 = 9.5°.

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02/06/23

The 𝐾sp of zinc hydroxide, Zn(OH)2, is 3.00×10−17 . Calculate the molar solubility, 𝑠 , of this compound.
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02/05/23

Chemistry HW help
Consider the equilibrium system described by the chemical reaction below. For this reaction, Kc = 2.19 × 10^-10 at a particular temperature. Calculate the value of Qc for the initial set reaction... more
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02/04/23

Calculate values
Calculate the values of dy and ∆y for the function y=e5x+3x given x=0 and ∆x =0.05 round to the nearest 4 decimal places
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02/04/23

Differential Equations problem help needed

Classify the values of β for which the characteristic equation has: distinct real roots, repeated real roots, and complex roots.y"-4y'+(4-β)y=0y(0)=1, y'(0)=1
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02/03/23

Related Rates Softball Diamond
A softball diamond has the shape of a square with sides of 60 feet. If a player is running from 2nd to 3rd base at 24ft./sec., at what rate is the distance between the runner and home plate... more
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02/03/23

if f(1)= and f(n+1)=f(n)^2+4 then find the value of f(4)
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02/03/23

Calculus Parametic

A particle moves at a constant speed along a line through P=(−1,−1,1) to point Q=(−2,−7,8). Find the parametric equations for its potions at time t if the particle passes through P at time t=2 and... more
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02/03/23

Chemistry SCH4U
Instant hot packs work by crystallizing sodium acetate. the molar enthalpy of crystallization of sodium acetate is -56.7 kj/mol. How many grams of sodium acetate are needed to warm 125.0ml of water... more
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02/03/23

need help with this problem
What is the acceleration for a system compromised of two objects attached to one another: one with mass m1=45kg and the other with mass m2=55kg? The force that s acting on this system is equal to... more
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02/03/23

Chances of exam question coming up
I’m sitting an exam with 69 study units. I only have time to study 25. The exam consists of 5 questions relating to different study units. I only have to answer 1. What are the chances one of the... more
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02/03/23

Statistics class
Of the people who fished at Clearwater Park today, 40  had a fishing license, and 10 did not. Of the people who fished at Mountain View Park today, 28 had a license, and 12 did not. (No one fished... more
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02/02/23

In how many ways can the officers be chosen while still conforming to University rules?

Assume that you have a total of 13 people on the board: 3 out-of-state seniors, 4 in-state seniors, 1 out-of-state non-senior, and 5 in-state non-seniors. University rules require that at least one... more
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02/01/23

Can you clear my misconception?
In Doppler Effect, I have a misconception regarding one thing which I have mentioned below:Suppose there are two balls of unequal sizes placed touching each other, the bigger one on the left and... more
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02/01/23

The electric charge of some dust particle is q = 4.5 nC. What is the net electric flux from this particle?
The electric charge of some dust particle is q = 4.5 nC. What is the net electric flux from this particle?𝜑E = q enc / Eo= (4.5e-06C)/(8.85e-12 Nm^2/C^2)= 5.084e5 Nm^2/C which is incorrect. I am... more
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01/31/23

Help with precalculus equation.
Can someone please help me with solving this equation?The function f(x)=2x^2+16x+3 has a minimum of ______?
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01/31/23

Finding resultant direction
An airplane is traveling 583 m/s at 68.1° degrees north of west when a wind starts to blow. The velocity of the wind is 110 m/s and it is blowing toward 19.0° east of north. What is the resultant... more
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01/30/23

Find the volume of the solid obtained by rotating the region underneath the graph of the function over the given interval about the 𝑦- axis.
f(x) = √x^2 + 4 , [0,1]the square root is over the entire equation not just the x^2
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01/30/23

A dust particle of mass 4.1 mg and charge +2.5 pC is released form rest 12 cm

A dust particle of mass 4.1 mg and charge +2.5 pC is released form rest 12 cm from a fixed charge of 4.2 mC. What will the dust particle's initial acceleration be when released?
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01/30/23

Can someone please help with this chem question?

"Using the solubility table, identify the following anions from the information given. Write the net ionic equtions that produce a precipitate.(a) Its barium salt is insoluble in water but its... more
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