07/10/22

I need help with solving this problem?
Old bottle of phosphoric acid that is labelled “0.6829M”.a. A standardized bottle of sodium hydroxide with a known concentration of 0.8573M. How many milliliters of this NaOH solution should be... more
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07/10/22

Use cylindrical shells to find the volume

Use cylindrical shells to find the volume of the solid generated by rotating the curve y=1ln(x) about the x-axis for 1≤x≤e.V=
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07/10/22

Finding the inverse of a logarithmic equation
Find the inverse of the function A(t)=500(1/2)↑ t/272. I can't use natural log to find the answer and I don't know how to solve for the inverse without using natural log
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07/10/22

math help needed
In the video, the water level was 15 milliliters before adding the chain, and 20 milliliters after adding the chain. When I weighed the chain, its mass was 73.5 grams.I believe the chain is solid... more
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07/09/22

Chemistry 102: Acids: Concentration
Calculate the concentration of H3O+ ions present in a solution of HCl that has a measured pH of 4.310 .
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07/09/22

Physics problem: connected inclined planes
There are two inclined planes with the same curvature and the same mass M put on a horizontal surface. A small body of mass m is set to slide off (without friction) from height h on one plane.... more
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07/08/22

Calculate the activation energy, 𝐸a , in kilojoules per mole for a reaction at 52.0 ∘C that has a rate constant of 0.236 s−1 and a frequency factor of 2.01×1011 s−1 . 𝐸a= kJ/mol
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07/08/22

Evaluate the definite integral
Evaluate the definite integral:∫ Lower Limit is 0; upper limit is 2 and the function is 1/(2x-3)^2 dxI've been doing an assignment where I am evaluating definite integrals and I've been finding the... more
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07/06/22

how do you solve this??
Keq = 3.143x10-5 for the reaction below:NH2CH2COOH(aq) + C2H5OH(aq) <--> NH2CH2COOC2H5(aq) + H2O(l)So if you were to combine 5.171g of NH2CH2COOH and 8.167g of C2H5OH in enough water to make... more
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07/05/22

Help me solve this!!
The following are experiments performed at 28.36°C:Exp’t # [feldomite]initial [anicium]initial [dolomide]initial Rate initial (M/second)1 0.963 ... more
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07/05/22

What is the concentration of M^(2+) ions at equilibrium?
The formation constant of [M(CN)4]2+ is 7.70 * 1016, where M is a generic metal. A .140 mole quantity of M(NO3)2 is added to a liter of .950 M NaCN solution. What is the concentration of M2+ ions... more
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07/04/22

Chemistry 102: Equilibrium: Find Equilibrium constant based off images/time.
The progress with time of a reaction system is depicted in the figure here. Red spheres represent the molar concentration of substance A, and blue spheres represent the molar concentration of... more
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07/04/22

Word problem algebra
An arrow is launched upward with a velocity of 192 feet per second from the top of a 35 foot building. What is the maximum height attained by the arrow?
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07/04/22

Statistics normal dispution probality z table

Problem 4. What is the probability that the shopper will be in the supermarket between 31 and 58 minutes? Mean 43 minutes Standard deviation 12 minHint: Convert the normal distribution X to... more
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07/03/22

How much larger is the contribution of Justine's father's car (48 gal of 92 octane gas / month) to global warming than Justine's cow?
Justine, a precocious 9 year old and the daughter of a farmer, has learned that cows generate a lot of methane (CH4), a greenhouse gas that leads to global warming. The EPA estimates that the 100... more
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07/03/22

CaHb is an organic compound (gas) that is reacting with O2, v(CaHb)=24l, V(O2)=72l, v(CO2)=48l, V(H2O)=?
Write the balanced equationfind the value of a and b knowing that the mixture is stoichiometryic using the progress table (tableau d'avancement)
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07/01/22

PreCalc Logistic
The population of New York state can be modeled by: P(t) = 19.71 1+61.22e-0.03513t Where P is the population in millions and t is the number of years since 1800. What was the population in 2020?
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07/01/22

Give the specific higher - order derivative of the given functions:
ℎ(𝑥) = (𝑥^5 − 1/15𝑥^5 ) ;𝒉^(𝟒) (𝒙)
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07/01/22

Finding Normal Vector
Find a vector normal (i.e. perpendicular) to the given vectors ~a = ˆi+ˆj+ˆk, ~b = 2ˆi+2ˆj−2ˆk
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07/01/22

Probability question Fair die

A fair die is rolled four times. What is the probability that it comes up 5 at least once? Write your answer as a fraction or a decimal, rounded to four decimal places.
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06/30/22

Solve 7(x+4)-⅔(x-6)≤2(x-3)(x+5)]
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06/30/22

A solid sphere of mass m is attached to a light spring of force constant k so that it can roll without slipping along a horizontal surface. Calculate the period of oscillation made by sphere.
A solid sphere of mass m is attached to a light spring of force constant k so that it can roll without slipping along a horizontal surface. Calculate the period of oscillation made by sphere.
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06/30/22

Gas Laws - Chemistry

Which sample contains more atoms: 1,340 mL of neon at 35.5 ˚C and 840 mmHg or 1.48 L of argon at 48.9 ˚C and 0.790 atm? moles Ne = _______ molmoles Ar = ______mol
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06/29/22

Chemistry 102: Kinetics: frequency factor and temperature
The compound 1,1-difluoroethane decomposes at elevated temperatures to give fluoroethylene and hydrogen fluoride according to the equation:CH3​CHF2​(g)CH2​CHF(g)+HF(g)Part 1). At 460K, the rate... more
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06/29/22

Can I get help on this please?
A 1.180 g1.180 g sample contains only vitamin C (C6H8O6)(C6H8O6) and sucralose (C12H19Cl3O8).(C12H19Cl3O8). When the sample is dissolved in water to a total volume of 26.4 mL,26.4 mL, the osmotic... more
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