10/12/21

Chemistry question
The density of air under ordinary conditions at 25 “C is 1.255 kg/m3. How many grams of air are in a room that measures 10 ft x9ft and has and 12.0 ft celine?
Follows • 1
Expert Answers •1

10/12/21

lawn bowling momentum

You throw a 2.6 kg lawn bowling ball forward (that is in the positive direction) at 14.7 m/s and it hits a 1.1 kg "pin" that is at rest. If the pin flies forward at 29.6 m/s, what is the ball's new... more
Follows • 1
Expert Answers •1

10/12/21

Find an equation of the straight line that passes through the point (−1, 4) and is parallel to the line passing through the points (−4, 5) and (3, 1).
Follows • 1
Expert Answers •1

10/12/21

Compound interest
A particular savings account has a 7% interest rate.1) If you invest $1200 into the account and it compounds monthly, what will the balance be after 5 years?2) How much money would you need to... more
Follows • 1
Expert Answers •1

10/12/21

Determine the limiting reagent and the theoretical yield of urea [(NH2) 2CO]
Suppose that 4.75 g of NH3 are mixed with 7.50 g of CO2. Determine the limiting reagent and the theoretical yield of urea [(NH2) 2CO]. b) How many grams are needed to prepare 25.00 mL of a 5% m /... more
Follows • 1
Expert Answers •1

10/08/21

A child’s toy consists of three cars that are pulled in tandem on small frictionless rollers. The cars have masses m1=3.1 kg, m2 =2.4 kg, and m3 =1.2 kg....
A child’s toy consists of three cars that are pulled in tandem on small frictionless rollers. The cars have masses m1=3.1 kg, m2 =2.4 kg, and m3 =1.2 kg. If they are pulled to the right with a... more
Follows • 1
Expert Answers •1

10/08/21

What is a good way to resolve this?
The random variable X has a probability density function fX (x) = 1/3 δ(x)+ 2/3 δ(x−2). Another random variable, Y , has a probability density function fY (y) = 1/2 δ(y) + 1/2 δ(y − 3). X and Y... more
Follows • 1
Expert Answers •1

10/08/21

Free Fall Question
If a drop of rain falls from a height of 2400 meters and hits the ground in 192 seconds, was it in free fall?
Follows • 1
Expert Answers •1

10/03/21

f(x)=x^3+bx^2+cx find b and c so that f has a critical number at (1,3)
Follows • 1
Expert Answers •2

10/02/21

Hi can you show me a step by step guide on how to solve this problem ?
Perhaps break it down that would be so helpful
Follows • 1
Expert Answers •1

10/01/21

my tutor gave me I dont understand how answer this
Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules.What is the partial pressure of nitrogen in air at atmospheric... more
Follows • 1
Expert Answers •1

09/29/21

Estimating Velocity (Derivatives)
I've been trying to work through this. I figured out the first half of this problem, but do not know how to estimate what the velocity at 0.2 would be.Consider a car whose position, s, is given by... more
Follows • 1
Expert Answers •1

09/29/21

NAMING SIMPLE INORGANIC AND ORGANIC COMPOUNDS
1. Based on the formula for the sulfate ion (SO42–), predict the formula for(a) the selenate ion(b) the selenite ion. (Sulfur and selenium are both in group 6A and form analogous oxyanions.)
Follows • 1
Expert Answers •1

09/29/21

Will the following reaction essentially go to completion?
The following reaction will essentially go to completion:HCl + H2O → Cl- + H3O+True or False?
Follows • 1
Expert Answers •1

09/28/21

Experts Please Help. Thank you
State the coordinates of the intercepts, stationary points, and the inflection point of p(x) = x (x^2-1)^2?a. Number of x-intercepts give the x,y coordinates:b. y-intercept: (?,?)c. number of... more
Follows • 1
Expert Answers •2

09/28/21

Box on rotating disc
A bar is fastened to a rotating disc and is pushing a small box along the edge of the disc. When the box reaches the edge of the disc, it slides off. How can we determine the box's pathway as is... more
Follows • 0
Expert Answers •1

09/27/21

Please help!!!!!!!!!!!!!!!!!!!
Exactly 3.3 s after a projectile is fired into the air from the ground, it is observed to have a velocity v⃗ = (8.9 i^ + 4.7 j^)m/s, where the x axis is horizontal and the y axis is positive... more
Follows • 1
Expert Answers •1

09/27/21

Statistics question
63% of students entering four-year colleges receive a degree within six years. Is this percent higher for students who play intramural sports? H0:          Ha:    
Follows • 2
Expert Answers •1

09/27/21

Using the cylindrical shell method

Use the cylindrical shell method to find the exact volume of the solid generated by revolving the region by the curve y=Square root x2+1 (the whole equation x2 +1 is squared), x=square root 3, x=0,... more
Follows • 1
Expert Answers •1

09/24/21

Chemistry 2110 Hw

In Bohr's model of the hydrogen atom, which is no longer the standard for understanding the atom, the electron revolves around the nucleus in one of an array of available orbits. Each orbit is... more
Follows • 1
Expert Answers •1

09/23/21

tangent line equations

The line y = b + mx is tangent to the graph of f at x = 7. Given that f( 7) = 5, the derivative f'( 7) = 4, and f"( 7) = 4, find m and b.
Follows • 1
Expert Answers •2

09/21/21

Mass of a sample of trifluoracetic acid

A sample of trifluoroacetic acid, C2HF3O2, contains  g of oxygen. Calculate the mass of the trifluoroacetic acid sample.
Follows • 1
Expert Answers •1

09/21/21

Help answer this??
You have prepared a solution by diluting 10.00mL of 0.961M copper(II) nitrate to a total volume of 50.00mL. What is the concentration of Cu2+ ions in the resulting solution? Report your answer to... more
Follows • 2
Expert Answers •2

09/21/21

General Chemistry HW
Some instruments differentiate individual quanta of electromagnetic radiation based on their energies. Assume such an instrument has been adjusted to detect quanta that have 3.25 x 10–16 J of... more
Follows • 1
Expert Answers •1

09/21/21

A pressure cooker develops temperatures above that of boiling water for cooking food faster on your stove.

The cooker is a fixed volume device which is sealed off so that when the water inside boils, it cannot escape. What do you think will happen to pressure inside the cooker as the temperature gets... 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.