Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The speed of a wave is the frequency multiplied by the wavelength. If a 200Hz sound travels through the following materials, use the given table of speeds of sound to determine the wavelength of sound:
-Air (20C) -Steel -Human Tissue
Material Speed (m/s)
Air (20C) 344
Helium 1,006
Water 1,440
Human tissue 1,540
Aluminum 5,100
Granite 4,000
Iron and steel 5,200
a brand of household bleach is 5.0 sodium hypochlorite naocl by mass and has a density of 1.08 gml. in washing
1. A chemist proposes a new kind of battery in which methane (CH4) is oxidized to CO2, while iodine (I2) is reduced to iodide (I- ) in acidic aqueous solution.
a) How many moles of KOH before reaction begins? b) How many moles of O2 before the reaction occurs? c) Which chemical is the limiting reagent? e) What is the mass of KO2(g) is produced? f) How many molecules of water is formed?
Pyridine (C5H5N) is a weak base (pkb = 8.74) with an unpleasant, sweet fishy odour. In a titration, 175.0mL of pyridine solution required 13.6 mL of 0.3250M HCl to reach the equivalence point. a) Calculate the pH of the solution at the equivalenc..
At a higher temperature, 373K, dinitrogentetraoxide partially decomposes according to the same equilibrium reaction but with slightly different results. The chemical equation is again
Compute the enthalpy of helium at this temperature and pressure and the rate at which enthalpy is transported by a stream of helium at 300k and 1atm whose molecular flow rate is 250 (Kmol/hour). R=0.082 (LATM/MolK). R=8.314(J/KMol). Compute the ma..
How much helium gas would it take to ?ll a gas balloon with a volume of 1020 cm 3 when the temperature is 39.0? C and the atmospheric pressure is 724 mm Hg? Answer in units of mol.
Assuming that the system is in the n = 2 state, calculate the probability of finding the proton at x = 12.0 ±0.3 nm. The "walls" of the well are at x = 0 and x.
Predict the product(s) of the reaction that would take place and select one of the products. If none of them are produced in the reaction, select none.
Which variable controls the number of significant digits in your MW determination (temperature, volume, pressure, wt of gas)?Does using the triple beam balance to weigh the water filling the flask limit the accuracy of your MW determination?
How would you determine the dS and dH for Cu2+ binding soil given K (distance) values at two different temperatures
20ml of 10 N HCl are diluted with distilled water to form one litre of the solution. What is the normality of the diluted solution? A solution contains 25% of water, 25% of ethanol and 50% of acetic acid by mass. Calculate the mole fraction of ethano..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd