09/27/23

Derivatives as a function

Find the derivative of f(x)= 8/x2 using the limit definition of the derivative.
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09/27/23

Which of the four reactions below will occur (select all that apply)?
Pt(s) + 2H+(aq) → Pt2+(aq) + H2(g)Ni(s) + 2H+(aq) → Ni2+(aq) + H2(g)Sn2+(aq) + H2(g) → Sn(s) + 2H+(aq)2NaF(aq) + I2(g) → 2NaI(aq) + F2(g)3Ni2+(aq) + 2Au(s) → 3Ni(s) + 2Au3+(aq)
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09/26/23

Kinetics chemistry
A substance decays with zero order kinetics. What is the half-life given a rate constant that is 0.737 M^-1s^-1 and an initial concentration of 1.75 M? How much of the substance remains after 22.5... more
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09/26/23

Kinetics order chemistry
A first order reaction has a half-life of 26.41 seconds. How long does it take for the concentration of the reactant in the reaction to fall to 63.25% of its initial value? How long does it take... more
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09/26/23

Complete and balance the precipitation reactions. Include physical states. Refer to the solubility rules as necessary.
Complete and balance the precipitation reactions. Include physical states. Refer to the solubility rules as necessary.precipitation reaction:K3PO4(aq)+MgCl2(aq)⟶
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09/25/23

Horizontal tangent problem
Find a cubic polynomial that has horizontal tangents at the points (-3,5) and (3,-2).
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09/25/23

Vertex: Find b and c
Find b and c so that y=−19x^2+bx+c has vertex (8,2).
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09/25/23

Trigonometric substitution
My daughter is having problems with this question. Any help is appreciated.a. Calculate the integral ((SR9x^2-4)/x^3)dx by using trigonometric substitution.b. Determine the Integrand obtained... more
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09/25/23

Indefinite Integrals
My daughter is having a hard time understanding this and it's above my head. Any help to show her/me how to work this is greatly appreciated.Consider the indefinite integral... more
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09/25/23

Helpppp.. Algebraa.. Urgent
Find the exact value of each x∈[0,2π) for which cos^2 (x)= (1/2) sin(2x). If g(x)=5+3x/ x−3 What is the domain of g(x)? Verify (with sketch and/or short argument) that g is a one-to-one... more
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09/25/23

ALGEBRA HELPP!!!.

I am confused about this question because of ln, can someone explain these in steps? G(x) = ln (1−x^2) and f(x) =√(x+3), what is the subset of the domain of g at the composition of f(g(x))? Domain... more
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09/24/23

This exercise involves the formula for the area of a circular sector.
This exercise involves the formula for the area of a circular sector.The area of a sector of a circle with a central angle of 5𝜋/12 rad is 19 m2. Find the radius of the circle. (Round your answer... more
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09/24/23

Formation of products from the Reaction of KMnO4 with Alkenes
Please help draw or explain what will be the products that from the reaction of KMnO4 with the following alkenes at an elevated temperature under acidic conditions:a) propeneb) cis-2-butenec)... more
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09/24/23

A mixture of 0.5540 M CO and 0.3810 M Cl, is enclosed in a vessel and heated to 1000 K.
A mixture of 0.5540 M CO and 0.3810 M Cl, is enclosed in a vessel and heated to 1000 K.CO(g) + Cl2 (g) - COCI2 (g)K. = 255.0 at 1000 KCalculate the equilibrium concentration of each gas at 1000... more
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09/23/23

Arc length of a sector
On a circle of radius 5m, what is the arc length of a sector whose central angle is 7 Pi / 6?
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09/23/23

Determine if functions are odd, even or and their symmetries, if any
a. f(x)=x^3+xb. g(x)=Pic. h(x)= sin x / x^2 +5d. k(x) = cos x / e^x
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09/23/23

Switching bounds of an integral doesn't change sign?
I know that when switching the upper and lower bounds of an integral, you also switch signs. But what about this: Integral (-2 to -1) ((16-x^3) / x^3) = Integral (-1 to -2) ((16-x^3) / x^3)-8x^-2 -... more
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09/23/23

Unit Circle: Quadrant
The point P is on the unit circle. If the y-coordinate of P is 1/2, and P is in quadrant II, then:x=Can I have an explanation? It's a bit confusing to me.
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09/23/23

What is the mass of the water vapor in kg
An apartment has the dimensions 11 m by 6 m by 4 m. The temperature is 20°C, and the relative humidity is 50 percent. What is the total mass (in kg) of water vapor in the air in the apartment?
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09/22/23

Pre-Calculus question
You have 764 feet of fencing to enclose a rectangular plot of land with one side along a river. No fencing is to be used on the side of the plot along the river. Find the dimensions of the plot... more
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09/22/23

Chapter 14 Question

Question 2: Describe the addition and the condensation polymers. Explain the difference between the reactions by which those two groups of polymers are obtained. Provide the examples of both... more
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09/22/23

If a balloon filled with air has a volume of 15.0 L at 25.0°C, what is its volume (in L) at -100.0°C?

 If a balloon filled with air has a volume of 15.0 L at 25.0°C, what is its volume (in L) at -100.0°C? 
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09/22/23

Multiplying/Dividing Rational Expressions
Simplify:(2x^9/15y^4)/(22x^8/35y^2)=
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09/22/23

Solve a Triangle

Suppose that triangle ABC is a right triangle with a right angle at C and hypotenuse c. Also note that a is the length of the side opposite angle A and b is the length of the side opposite... more
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09/22/23

Domain and range
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