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Let consider a dielectric mirror to be employed in a He-Ne laser of 623 nm. This mirror is composed of alternating layers of MgF2 (n = 1.38) and TiO2 (n = 2.41). This material is to be coated on th
Discuss why does sealing the open end of a melting point capillary tube allow you to measure the melting point of a compound that sublimes?
Standing on the surface of a small spherical moon having radius 5.13 x 104 m and whose mass is around 6.11 x 1018 kg, an astronaut throws a rock of mass 1.67 kg straight upward with the initial speed
Determine the pH of a solution prepared by dissolving the 0.27moles of formic acid (HCOOH) and 0.37 moles of sodium format (NaCOOH) in 2.00L solution. (Ka=0.00018)
Find how many employees should start at which times of day to meet the requirements with minimum cost. Ensure that number of employees starting at every hour is integer valued.
The adult burns 2.0*103 Cal per day. An adult eats food whose nutritional energy totals approximately 2.2*103 Cal per day. Discuss how much excess nutritional energy, in kilojoules, does the
A chemist on another planet performed the Millikan oil-drop experiment and measured the following charges in his planet's unit for charge, the bot: 2.62 x 10-13 bots; 3.93 x10-13 bots; 6.5
Assume the contaminant is methane (MW = 16) and temperature =25°C. Determine the mass per volume concentration of a gaseous contaminant with a concentration of 10 ppm?
If the masses of the empty flask were 56.12g and87.39g, respectively, and the density of water is 0.9976 g/mL, determine the volume of the flask in mL.
If inhaled air contains21% oxygen by volume and exhaled air is 16% oxygen by volume, what is the volume of air per breath? A resting adult requires about 240mL of pure oxygen/min and breathes about
The coil is held in the horizontal plane and the capacitor is discharged. Then the coil is rapidly rotated 180 degrees so that the side that had been facing up is now facing down. After that, evalua
Iron (II), ions react with the permanganate ions, MnO41- (aq) in an acidic solution to form the Fe3+ (aq) ions. A 6.893 gram sample of iron ore was crushed and treated with concentra
Determine the minimum and maximum number of bonds that chlorine (Cl) produces? Assume chlorine bonds with hydrogen. Is the minimum 1and the maximum 7?
If he could not perspire or else cool his body, determine by how much his body temperature increase throughout this exercise?
Which block consists of more thermal energy? When the blocks are positioned in thermal contact, will the thermal energy of the blocks change? If so, explain how?
A wave on a string is explained by the relation y = A sin (76t - 0.048x), where t is measured in seconds and x in meters, having A = 0.19 m. Evaluate the maximum speed of a point on the string?
Determine the molarity of 10% concentrated HC or 5% sodium hydroxide? Determine the numbers of moles of each reagent are in 1 mL of these solutions?
The total nuclear binding energies of Al-27, Mg-27, Si-27 are 244.2667, 246.8741, and 241.6741 MeV, respectively. Calculate the values of the Coulomb energy and asymmetry energy coefficients
The waste treatment plant has the settling tank designed with the overflow capacity of 100 m3 per day per m2. Evaluate depth (in ft) of settling tank if retention capacity is 2 hrs.
There is the possibility that your compound may crystallize out on the filter paper thus reducing the percentage yield of your crystals during the vacuum filtration of the hot solution of your compo
There are approximately 25 drops per milliliter of water depending upon the tip of a dropper pipet. Determine the proximate volume of one drop of an aqueous solution?
Calculate how many kilograms of copper sulphide could be formed from the reaction of .9 mol of copper with excess sulphur?
If the masses of the empty flask and filled flask were 56.12g and 87.39 g, respectively, and the density of water is 0.9976g/mL, determine the volume of the flask in mL.
Determine the freezing point of this solution? A solution is prepared by condensing 4.00 L of a gas, measured at the 270C and 748 mmHg pressures into the 58.0g of benzene.
Use the semi empirical mass equation to determine the percentage contribution to the average binding energy per nucleon of the volume energy for A=60 and A =240