01/07/25

Calculate the pressure of 1.33 mol of argon gas in a 6.33 L container at 200°C using the van der waals equation
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03/27/24

What is the distance between the walls?
A source of laser light sends rays AB and AC toward two opposite walls of a hall. The light rays strike the walls at points B and C, as shown below:What is the distance between the walls? (1... more
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03/10/24

tan (45+x) = tan (45-x). when using compound formula x=90 disappears
When solving by simply making 45+x=45-x you also get x=90. My maths teacher has gone over and checked on the actual graph and this is definetly a valid answer, we can't figure out why it doesnt... more
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03/09/24

2. Use Hess’s law and the following reactions to calculate the enthalpy change for AC A  B H=+34 kJ C  B H=+82 kJ
1.      Use Hess’s law and the following reactions to calculate the enthalpy change for    AàCA à B  DH=+34 kJC à B   DH=+82 kJ
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03/06/24

Using linear approximation and tangent
1.Let y=4x^2+2x+3. If Δx=0.3 at x=4, use linear approximation to estimate ΔyΔy≈2.Let y=sin(3x). If Δx=0.3 at x=0, use linear approximation to estimate ΔyΔy≈ =   Find the percentage errorerror... more
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08/11/23

Which molecule(s) has(ve) resonance structures?
H2CO HON0cOzС6Н6
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06/04/23

physics homework question
A small mailbag is released from a helicopter that is descending steadily at 1.10 m/s.(a) After 5.00 s, what is the speed of the mailbag?v = ___m/s(b) How far is it below the helicopter?d=... more
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03/05/23

Precalculus question
An object with initial temperature 120 F is submerged in large tank of water whose temperature is 60 F. Find a formula for F(t), the temperature of the object after t minutes, if the cooling... more
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03/05/23

Let a=(-2,-5,0) and b=(-4,3,-1). Find the angle between the vector (in radius)
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03/05/23

Let a=(0,2,3) and b=(-5,5,-1). Find the projection of b onto a.
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03/04/23

Find the critical numbers of the function. (Enter your answers as a comma-separated list.)
h(x) = sin2 x + cos x  ,  0 < x < 2𝜋
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03/04/23

What is the mass of 3.01x 1022 molecules of phosphorus, P4 ? {R.AM for phosphorus is 31} *​
⁶What is the mass of 3.01x 1022 molecules of phosphorus, P4 ? {R.AM for phosphorus is 31} *​
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03/04/23

The pH of a solution is 3.45. What is the OH⁻ concentration in the solution?
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02/12/23

Gradient Ascent Problem Calculus
Suppose we apply gradient ascent algorithm to find a local maximum of the function f(x,y) = 3x cos^3 *y + 1/x. If we start from the point (x0,y0) = (−1, π/3 ) and use learning rate α = 0.1 to go... more
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02/12/23

i need help on math
A college offers tutoring in Math, English, Chemistry, and Biology. The number of students enrolled in each subject is listed below. If the college can only afford to hire 14 tutors, determine how... more
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02/12/23

Algebra with math
he stress in the material of a pipe subject to internal pressure varies jointly with the internal pressure and the internal diameter of the pipe and inversely with the thickness of the pipe. The... more
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02/08/23

Help me please!!!!
A spring has a natural length of 10 cm. If a 22-N force is required to keep it stretched to a length of 20 cm, how much work W is required to stretch it from 10 cm to 15 cm? (Round your answer to... more
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02/08/23

Help Me please!! Can't figure this out!
According to Hooke's Law, the force required to hold the spring stretched x m beyond its natural length is given by f(x) = kx, where k is the spring constant.Suppose that 4 J of work is needed to... more
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11/28/22

PLS HELP! Which of the following graphs could depict the function f(x)=m(x+d)^1/5, if both m and d are positive numbers?
Accurately sketch a graph that could depict the function f(x)=m(x+d)^1/5, if both m and d are positive numbers?
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11/15/22

I AM SOOOOOOOOOOO STUCK!
A scientist began a study with a sample of 1,500 bacteria. He noticed that the number of bacteria in the sample after t days can be modeled by the equation P=1500 x 3^t In this equation what does... more
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05/10/22

Find the probability that a number less than 4 on a 12 sided dice turns up on exactly 3 out of 6 tosses
"Suppose that a die is made by marking the faces of a dodecahedron with the numbers 1-12. What is the probability that on exactly 3 out of 6 tosses a number less than 4 shows up?
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05/10/22

What is the answer?
At a local college, 51 of the male students are smokers and 459 are non-smokers. Of the female students, 60are smokers and 540 are non-smokers. A male student and a female student from the college... more
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05/09/22

How To Find The Function of A Third Degree Polynomial When Given The Zeros of x=-3, x=2, and x=3?
I was given a problem where the question asked me to find which of the answers provided could not be a potential factor in the equation. The information given to figure this out was that the... more
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04/03/22

Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom.

Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom. The four quantum numbers , the principal quantum number (n), the angular... more
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03/28/22

Chem Enthalpy for reaction problem
Hello! Struggling a little with this problem and not sure if i am doing it right. The experiment was performed at a constant pressure at 298K using 0.300 mol of A (g) and 0.350 mol of B (g) in a... more
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