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They head west riding at the rate of 15 mph. How far each cyclist rides in t hours. Write and find the equation to determine when they meet.
Illustrate the structure of the expected product from the faster reacting isomer. Which isomer of 1-bromo-3-isopropylcyclohexan reacts faster when refluxed with the potassium tert-butoxide, the cis
To what radius would a star of mass 2.13 x 1030 kg have to be contracted for its escape speed to equivalent the speed of light? (Black holes have escape speeds greater than the speed of light; ther
Determine the numbers of different tripe tides can exist, each having one residue of Glycine, one of L-threonine & one of the L-arginine?
Determine the volume of NaOH added and the pH when the [A-2] =4[HA-1]. The weak acid H2A is a diprotic acid (Ka= 1X10-3) and Ka2= 2X10-7). A 20.00ml sample of 0.2000M H2A is titrated with t
Determine the difference in gravitational potential energy for Sputnik I as it moved from apogee to perigee. (Employ a positive sign for an increase, negative sign for a decrease in U.)
After conducting tests using the CuSo4*5H2O as a reagent, results show that the new compound synthesized contains the following elements:
Determine the approximate temperature of a flame formed from the combustion of Methane in the air using the molar heat of the reaction and the specific heats of all products and reactants.
Determine the numbers of amino acid residues are there in the phycobiliproteins if the average molar mass of amino acids is 106.7g/mol, and the molar mass of phycobiliproteins is 17073 g/mo
If a stone of 62 N is joined to a spring scale and is submerged in water, the spring scale reads 41 N. Determine the density of the stone?
They pass each other in thirty minutes, and Brittani, headed for point B, arrives there in another twenty minutes. Find time at which after brittani arrives at point B will Lea arrive at Point A?
Determine the density in grams per cubic centimeter of VO and SrO. The ionic radii are V^(2+)=.065nm, Sr^(2+)=.127nm,O^(2-)=.132nm.
A window washer is standing on the scaffold supported by a vertical rope at each end. The scaffold weighs 194 N and is 2.8 m long. Determine the tension in each rope if the worker of 702 N stands 1
When you check MSDS for Lye, it says to flush with water for 10 minutes. Lye, when mixed with water, creates a large amount of heat. In the lab, we have used a 50/50 mixture of water and vinegar to
In Jules vernes from the earth to the moon, scientists are launched from the earth through a cannon. With what speed would their capsule have to leave the cannon is their ultimate speed is zero at t
Find out the number atoms per cell when the silver metal is found to have a cubic unit cell. The edge length of the unit cell is 408 pm and the density of silver is 10.5g/cm3.
What will be the absorbance of a 0.075 M solution if an aqueous solution of Co (NO3 )2 has a molar absorptive of 5.10 L/mol.cm at 505 nm.
When the refracted ray emerges at the point P where the sphere intercepts the optical axis, determine the refractive index of the sphere?
Write down a balanced equation for the reduction of nitrophthalhydrazide to amino phthalhydrazide using the sodium hydrosulfite, which is oxidized to bi sulfite.
The window washer accidentally drops the bucket from top of 64-foot building. Height (h) of bucket after t seconds is provided by given formula: h=-16t^2+64. How long will it take for bucket to hit
A constant tangential force of 290 N exerted to its edge causes the wheel to encompass an angular acceleration of 1.094 rad/s2. (i) Determine the moment of inertia of the wheel?
Discuss what fraction of the initial number of the C-11atoms in a sample will remain after 81 minutes? Carbon-11 is a radioactive isotope of carbon. Its half-life is 20.3 minutes.
Synthesis of a Hetero cycle: Write down a detail mechanism for the formation of acid catalyzed hydrolysis of methyl benzoate (Esterification) and 2,3-dimethylquinoxaline.