JACQUES D.

11/08/22

A 10.5 kg board 6.00 m long is supported by two sawhorses, one at each end. A 4.45 kg saw sits on the board 1.80 m from the left end. Find the upward force that the LEFT sawhorse exerts on the board.

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11/08/22

Chemistry Question

The identity of an unknown monoprotic organic acid is determined by titration. A 0.448 g0.448 g sample of the acid is titrated with 0.176 M NaOH.0.176 M NaOH. What is the molar mass of the compound... more

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Math Algebra 1 Algebra 2

11/08/22

if y=3-x/2x find the expression equal to x+3

the answer is: 6y+6/2y+1 but im confused on how to set this up would i set it equal to x+3?

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Answers •2

Precalculus

11/08/22

Find a polynomial equation that satisfies the given conditions.

Degree 3; the coefficient of x^3 is 1; three roots are 2,-2, and 4

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Calculus

11/08/22

What is the approximation for f(-2.1)f(−2.1) found by using the line tangent to the graph of ff at x=-2?x=−2?

linear approximation

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Answers •1

Physics

11/07/22

General College Physics I

An IV bag containing medication is suspended some height above the injection point in the patient's hand. To make the medication get into the vein instead of blood flowing out of the vein, the... more

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Answers •1

Calculus

11/07/22

Compute the Jacobian of the following functions

Solve for x and y in terms of u and v, then compute the Jacobian partial (x,y) /partial(u,v). The correct answer is that this gives the number 0.5. I have calculated the determinant, which I... more

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Chemistry

11/06/22

Need Help With Question

What quantity in moles of precipitate will be formed when 100.0 mL of 2.00 M NaI is reacted with 80.0 mL of 0.900 M Pb(NO₃)₂ in the following chemical reaction? 2 NaI(aq) + Pb(NO₃)₂(aq) → PbI₂(s) +... more

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Chemistry

11/06/22

Calculate the concentration of tin(II) chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits.

One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. Any chloride anions in solution will combine... more

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Probability

11/05/22

Probability question

Assume that a procedure yields a binomial distribution with a trial repeated n=20n=20 times. Find the probability of exactly x=11x=11 successes given the probability p=p=19/60 of success on a... more

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Chemistry

11/03/22

Chemistry 161 Chapter 6

If 7.900 g C6H67.900 g C6⁢H6 is burned and the heat produced from the burning is added to 5691 g5691 g of water at 21 ∘21⁢ ∘C, what is the final temperature of the water?

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Calculus

11/03/22

Optimization Problem

A wire 5 meters long is cut into two pieces. One piece is bent into a equilateral triangle for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To... more

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Algebra 1 Algebra 2 Linear Algebra

11/03/22

Linda the trainer

Linda the trainer has two solo workout plans that she offers her clients: Plan A and Plan B. Each client does either one or the other (not both). On Friday there were 5 clients who did Plan A... more

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Chemistry

11/01/22

The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine. What rate law does this mechanism predict?

Cl2 ⇌ 2Cl (fast, reversible) Cl + CHCl3 → HCl + CCl3 (slow) Cl + CCl3 → CCl4 (fast) (Choose from the list below and enter your answers in alphabetical order, e.g. ABC ). A) kB) [CHCl3] C)... more

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Chemistry

11/01/22

The Haber reaction for the manufacture of ammonia is: N2 + 3H2 → 2NH3 Without doing any experiments, which of the following can you say MUST be true?

The activation energy is positive. Disappearance rate of N2 = 3 (Disappearance rate of H2). The reaction is first order in N2. Disappearance rate of H2 = 3 (Disappearance rate of N2). The... more

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Algebra 2

11/01/22

church building fund has invested money in two ways part of money at 3% interest and four times as much at 2.75%. find amount invested at each rate if the total annual income from interest is $2800

This is a question on a homework assignment that I can't figure out. I'm not sure how to set up the equation

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Science Chemistry

10/31/22

Calculate the pKa of lactic acid

Calculate the pKa of lactic acid (CH3CH(OH)COOH) given the following information.40.0 mL of 0.2 M KOH are added to 100. mL of a 0.500 M lactic acid solution producing a pH of 3.134.

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Answers •2

Calculus

10/31/22

How would I answer this Taylor polynomials question?? Help!

Let c0+c1(x-a)+c2(x-a)2+….+cn(x-a)n be the Taylor series of the function f(x)=x2sin(x). For a=0 determine the value of c3.c3=?

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Differential Equations

10/31/22

a rectangular picture measures 10 inches by 15 inches. it is put in a frame with a uniform width. if the area of ths picture is equal to the area of the frame what is the width of the frame?

I need a solution please.

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Calculus

10/31/22

could someone explain how you would use 'ln' to solve this? lim x--> 0+ for (4x)^(5x)

and since it's 0 from the right side, would I still plug in 0? or a small number like 0.001?

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Chemistry

10/30/22

molality of aqueous solutions using boiling point?

what is the molality of an aqueous solution of glucose if its boiling point is 104.9 degrees C?

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Physics

10/30/22

Find the gradients of the following functions: (a) f (x, y, z) = x2 + y3 + z4. (b)

Find the gradients of the following functions:(a) f (x, y, z) = x2 + y3 + z4.(b)

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Chemistry

10/29/22

For a particular gaseous reaction, ΔH° = 32.0 kJ/mol and ΔS° = 98.0 J/K*mol. Assume that ΔH and ΔS do not vary with temperature.

a. What is the maximum work that can be done by this reaction at 298.15 K?b. What is the equilibrium constant Kp for this reaction at 350.0 K?

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Math Calculus

10/29/22

Find h'(-3) if h= (f)(g), f'(x)= -10x^2-9, and the equation of the tangent line of g at -3 is y= -8x - 1

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Calculus

10/28/22

largest value of A

Find the largest value of A such that the function 𝑓(𝑥)=𝑥3+1𝑥2−6𝑥+6 is decreasing for all x in the interval (0,𝐴)

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Answers •2

A 10.5 kg board 6.00 m long is supported by two sawhorses, one at each end. A 4.45 kg saw sits on the board 1.80 m from the left end. Find the upward force that the LEFT sawhorse exerts on the board.

Chemistry Question

if y=3-x/2x find the expression equal to x+3

Find a polynomial equation that satisfies the given conditions.

What is the approximation for f(-2.1)f(−2.1) found by using the line tangent to the graph of ff at x=-2?x=−2?

General College Physics I

Compute the Jacobian of the following functions

Need Help With Question

Calculate the concentration of tin(II) chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits.

Probability question

Chemistry 161 Chapter 6

Optimization Problem

Linda the trainer

The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine. What rate law does this mechanism predict?

The Haber reaction for the manufacture of ammonia is: N2 + 3H2 → 2NH3 Without doing any experiments, which of the following can you say MUST be true?

church building fund has invested money in two ways part of money at 3% interest and four times as much at 2.75%. find amount invested at each rate if the total annual income from interest is $2800

Calculate the pKa of lactic acid

How would I answer this Taylor polynomials question?? Help!

a rectangular picture measures 10 inches by 15 inches. it is put in a frame with a uniform width. if the area of ths picture is equal to the area of the frame what is the width of the frame?

could someone explain how you would use 'ln' to solve this? lim x--> 0+ for (4x)^(5x)

molality of aqueous solutions using boiling point?

Find the gradients of the following functions: (a) f (x, y, z) = x2 + y3 + z4. (b)

For a particular gaseous reaction, ΔH° = 32.0 kJ/mol and ΔS° = 98.0 J/K*mol. Assume that ΔH and ΔS do not vary with temperature.

Find h'(-3) if h= (f)(g), f'(x)= -10x^2-9, and the equation of the tangent line of g at -3 is y= -8x - 1

largest value of A

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