10/28/21

Which distribution should you use for this problem?

A hospital is trying to cut down on emergency room wait times. It is interested in the amount of time patients must wait before being called back to be examined. An investigation committee randomly... more
Follows • 1
Expert Answers •1

10/28/21

How to solve log(x) − 2?
The problem set gives one tip: Try multiplying 2 with log(e).
Follows • 0
Expert Answers •1

10/28/21

For a strong-acid, strong-base titration with a ph equivalence point at 7, why can we use bromophenol blue indicator? (NaOH, HCl reaction)
Follows • 2
Expert Answers •2

10/27/21

How much kg of salt is in the tank after 30 minutes?
A very large tank initially contains 100L of pure water. Starting at time t=0 a solution with a salt concentration of 0.5kg/L is added at a rate of 6L/min. The solution is kept thoroughly mixed and... more
Follows • 1
Expert Answers •1

10/26/21

A roast turkey is taken from an oven when its temperature has reached 195 Fahrenheit and is placed on a table in a room where the temperature is 65 Fahrenheit.
(a) If the temperature of the turkey is 150 Fahrenheit after half an hour, what is its temperature after 45 minutes? _______ Fahrenheit.(b) When will the turkey have cooled to 110... more
Follows • 1
Expert Answers •1

10/25/21

Are my answers to these Chemistry questions on Le Chatelier correct?
Le Chatelier’s principle states which of the following?A. When a stress is applied to an equilibrium, the reaction will shift in a way that relieves the stress and restores the equilibrium.B. When... more
Follows • 1
Expert Answers •1

10/25/21

Titration question
 An 0.0151 L acidic solution of potassium dichromate is titrated with a solution of 0.125 mol/L iron (II) chloride. The concentration of potassium dichromate according to the experimental evidence... more
Follows • 1
Expert Answers •1

10/25/21

Three fair dice are rolled. Let the random variable X be the number of die that are showing a roll of 1. Complete the probability distribution table. (Give probabilites to three decimals)

x P(X=x)0123
Follows • 1
Expert Answers •1

10/24/21

Evaluate ∫∫ A sin(x^2 + y^2) dA, where A is the region bounded between x^2 + y^2 = 4 and x^2 + y^2 = 9. please use polar coordinates

Follows • 1
Expert Answers •1

10/24/21

Thermochemistry and calorimetry

If 80.5 g of KBr are dissolved in 400.0 g of water at 25.0 °C in an insulated container, a temperature change is observed. The ∆H of solution of KBr is 19.9 kJ/mol. Assuming that the specific heat... more
Follows • 1
Expert Answers •1

10/24/21

Volume; disk method

Suppose you are given a solid whose base is the circle x^2+y^2=64 and the cross sections perpendicular to the x-axis are triangles whose height and base are equal.Find the area of the vertical... more
Follows • 1
Expert Answers •1

10/21/21

Solve the equation on the interval , [0, 2π). Write numbers as integers or simplified fractions and separate multiple answers with commas. cosx=1/6
Follows • 1
Expert Answers •1

10/21/21

Find a formula for a function of the form y=bxe^(−ax) with a local maximum at (6,1). a= b=
Follows • 1
Expert Answers •2

10/21/21

How is this solved? Im using Chem101
What is the change in enthalpy in joules when 5.44x10-4mol of AgCl solid dissolves in water according to the following chemical equation: AgCl(s) -> Ag+(aq) + Cl-(aq) H=65.5 kJ
Follows • 1
Expert Answers •1

10/20/21

Chemistry ice table
At 100°C, the reaction: N2(g) +O2(g) <-> 2NO(g) has Keq=0.0010. 7.5mol of NO is added to a 250mL flask. Determine concentrations for each gas at equilibrium.
Follows • 1
Expert Answers •1

10/20/21

Write an equation of the line that passes through the given point and has the given slope. (3, −2); slope 13
Follows • 1
Expert Answers •2

10/18/21

Which of the following has the greatest momentum?
A. a 1000g ball moving at 20 m/sB. a 680 kg turtle walking at 3 mphC. a 50 kg. student running at 20 m/sD. a 1000 kg car moving at 20 m/s
Follows • 1
Expert Answers •1

10/18/21

Inorganic Chemistry
(A) Only one of the chemicals listed below is stable under normal laboratory conditions (e.g. normal Temperature, Pressure and atmosphere). Use your knowledge of Oxidation States and/or... more
Follows • 0
Expert Answers •1

10/15/21

ap physics questions

An object’s tendency to maintain its current state of motion is due to which property:A. speedB.massC.weightD.accelerationE. all of theseA skydiver leaps from a plane and accelerates toward the... more
Follows • 0
Expert Answers •2

10/15/21

In this problem you will use undetermined coefficients to solve the nonhomogeneous equation y′′+4y′+4y=12te−2t−(8t+12) with initial values y(0)=−2 and y′(0)=1.
Write the form of the particular solution and its derivatives. (Use A, B, C, etc. for undetermined coefficients. FindY =Y' =Y" =
Follows • 1
Expert Answers •1

10/15/21

Can someone please help and check-over my answers to these Chemistry problems?
 _______ will have a higher entropy than 50.0 g CO2 (g) at 56 oC.A. 25.0 g CO2 (g) at 56 oCB. 50.0 g CO2 (g) at 50 oCC. 50.0 g CO2 (l) at 56 oCD. 55.0 g CO2 (l) at 56 oC E. 55.0 g CO2 (g) at... more
Follows • 1
Expert Answers •1

10/14/21

What is the mass of 1 mole of barium sulfate (BaSO4) use to take X rays of the gastrointestinal tract?
What is the mass of 1 mole of barium sulfate (BaSO4) use to take X rays of the gastrointestinal tract? a. 64 g b. 185.33 g c. 233.33 g d. 169.33 g
Follows • 1
Expert Answers •1

10/13/21

The Force Exerted on the Moon (Figure 1)shows the Earth, Moon, and Sun (not to scale) in their relative positions at the time when the Moon is in its third-quarter phase.

Though few people realize it, the force exerted on the Moon by the Sun is actually greater than the force exerted on the Moon by the Earth. In fact, the force exerted on the Moon by the Sun has a... more
Follows • 1
Expert Answers •1

10/13/21

Calculus question
Since January 1, 1960, the population of Slim Chance has been described by the formula P=42000(0.97)^t, where P is the population of the city t years after the start of 1960. At what rate was the... more
Follows • 1
Expert Answers •1

10/13/21

Suppose that the distribution of weekly water usage for single-family homes in a particular city is approximately normal. The mean is 1400 gallons, and the standard deviation is 300 gallons.

a. What is the z-score for 800 gallons? b. What is the approximate value of the highest 15th percentile? c. What is the 7-score for 1665 gallons? d. What is the approximate value of the 14th... more
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.