03/10/22

2d momentum/inalastic collision

A 7.50 kg bowling ball moving6.42 m/s strikes a 1.60 kg bowlingpin at rest. After, the pin moves14.8 m/s at a -47.0° angle. Whatis the x-component and y-component of the ball'sfinal velocity?Please... more
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03/10/22

A coin is thrown 3 times .what is the probability that atleast one head is obtained? https://starofgeeks.com
A coin is thrown 3 times .what is the probability that atleast one head is obtained? https://starofgeeks.com
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03/10/22

Physics Problem
A circular swimming pool has a diameter of 10 m. The circular side of the pool is 4 m high, and the depth of the water is 3.5 m. (The acceleration due to gravity is 9.8 m/s^2 and the density of... more
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03/10/22

An experimental data on the reaction of H2 and PO3-3 is given below
Initial[PO3] [Initial H2] Initial RateExperiment 1 0.100 0.100 ... more
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03/09/22

How do you solve this pls help?
H2C2O4 + MnO4¯ ---> CO2 + Mn2+1) The balanced half-reactions:2) Equalize the electrons:3) The final answerO2 + As ---> HAsO2 + H2O1) correct half-reactions:2) equalize the electrons3) The... more
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03/08/22

This is one of my more harder problems: Calculate K from Inital + One Final Concentration
A student ran the following reaction in the laboratory at 668 K:2NH3(g) N2(g) + 3H2(g)When she introduced 7.53×10-2 moles of NH3(g) into a 1.00 liter container, she found the equilibrium... more
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03/08/22

Suppose a 7-digit phone number is chosen at random. What is the probability that the digits are distinct (i.e. that no digits repeat)?
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03/07/22

Calculate the probability of not rolling a 2. (Express your answer as a decimal rounded to the nearest ten-thousandth.)
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03/07/22

C7H16+11O2→7Co2+8H2O
Using the balanced equation from question 4 above for unknown fuel/additive that was analyzed by GC-MS, what volume of oxygen (at STP) would be needed to completely react with 15.0 g of your fuel?... more
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03/07/22

Equilibrium summary
Describe what is meant by the term dynamic equilibrium
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03/07/22

Carter and his girlfriend both swim at 4.0 m/s. They jump into a river 1.0 Km across, with a current of 3.0 m/s [E]
a) Carter faces (heads) due north at all times. What is his velocity relative to the ground?b) Carter's girlfriend swims straight across relative to the shore ( she does this by heading upstream a... more
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03/06/22

Math homework help
The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a... more
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03/04/22

What is the enthalpy of the reaction as written?
When 0.305g of sodium metal is added to an excess of hydrochloric acid,  3170J of heat are produced. What is the enthalpy of the reaction as written? (Hints: convert the heat given to kJ, and since... more
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03/04/22

Riemann Sum Calculus Question
What is the subscript i of x in the Riemann Sum or Riemann Sum formula?
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03/04/22

I'm stuck on the latter part of this equation, for some reason I got a 12 for the .4 proportion when I attempted to standardize it. This does not correlate with my z distribution chart. Thanks!
Based on historical data, your manager believes that 25% of the company's orders come from first-time customers. A random sample of 224 orders will be used to estimate the proportion of... more
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03/04/22

Mixed gas laws help
How many moles of helium gas would it take to fill a balloon with a volume of 1260.0 cm3 when the temperature is 32°C and the atmosphere pressure is 752 mm Hg?
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03/04/22

What is the equilibrium partial pressure of C?
An empty steel vessel is charged with 0.330 atm of C and 0.330 atm of A. Once the system reaches equilibrium according to the reaction below, what is the equilibrium partial pressure of C? Kp for... more
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03/04/22

Using the description,Write a symbolic equation for the location of the center of mass of the three beads relative to the left end of the rod, in terms of the variables given in the problem .

Three beads are placed along a thin rod. The first bead, of mass m1 = 29 g, is placed a distance d1 = 1.5 cm from the left end of the rod. The second bead, of mass m2 = 12 g, is placed a distance... more
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03/03/22

How do you solve this?
Sodium hydrogen carbonate NaHCO3, also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Acid indigestion is the burning sensation you get in your stomach when... more
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03/03/22

What is the minimum and maximum?
Find the minimum and maximum values of the function f(x,y) = (x^2)y + x + y subject to the constraint xy = 9.minimum: ?maximum: ?
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03/03/22

Choose the predominant intermolecular force involved for each substance.
Choices (London dispersion, Dipole-dipole, Hydrogen Bond, Covalent Network, Ionic Forces)Pair 1: HClPair 1: I2Pair 2: CH3FPair 2: CH3OHPair 3: H2OPair 3: H2SPair 4: SiO2Pair 4: SO2
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03/02/22

Description.. Alaska has an area of...
Suppose you have Avogadro's number of mini marshmallows and use them to cover the state of Alaska which has a land area of 5.720 x 10^5 mi^2 Each mini marshmallow has a diameter of 0.635 cm and a... more
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03/02/22

Elastic collision /2d momentum
A 3520 kg truck moving north at16.0 m/s makes an INELASTICcollision with an 1480 kg carmoving 21.0 m/s east. What is themagnitude of their (joint) velocityafter the collision?-if I could I could... more
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03/02/22

Express your answer to two significant figures and include the appropriate units
Oxalic acid, a compound found in plants and vegetables such as rhubarb, has a mass percent composition of 26.7  C, 2.24  H, and 71.1  O. Oxalic acid can interfere with respiration and cause kidney... more
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03/02/22

Chemistry Equilibrium
C (s) + H2O(g) -> CO(g) + H2(g) Kp=1.6x10-21 at 298 If at 298 K PCO= 1x10-8 atm PH2= 2x10-4 atm PH2O= 5x10-5 atm and mass of C = 2gIs the mix‎ture of gases at e‎quilibrium ? S‎how... more
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