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What is a rarefaction? Which is longer, the wavelength of infrasound or the wavelength of ultrasound?What is the chief physical property that describes
(a) pitch,
(b) loudness, and
(c) quality?
Calculate the volume (at 20°C and 1.00 atm) of SO2 produced by conventional roasting of 9.561 tonnes (9561 kg) of copper sulfide ore, CuS - Besides the assumption that the water does not spread out, what other factors may make this calculation incor..
What is the vapor pressure at 75 degrees celcius of an aqueous solution prepared by the addition of 52.9 g of urea CO(NH2)2 to 178 g of water?
Calculate the heat transferred, q. Is water relevant in finding the heat transferred since it is in mL and not in grams?
a 0.755 g sample of hydrated copper (II) sulfate was heated carefully until it had changed completely to anyhydous copper(II) sulfate (CuSO4) with a mass of 0.438 g. Determine the value of x
Trouble understanding the relationship between the Ka and how acidic a chemical is. Is it safe to say that the more acidic a chemical is the higher the Ka value will be
The composition of a gas on a dry basis is 74.0 mole% N2, 10.0% O2, 12.0% CO2, and 4.0% CO. If the mole fraction of water is 0.190, what is the gas composition on a wet basis
A solution of a weak acid was tested with the indicators used in this exeriment. The colors observed were as follows: Methyl violet , violet, Congo red, violet , thymol blue, yellow, Bromcresol green, yellow, Methyl yellow, orange. What is the app..
on a dry day your body can accumulate static charge from walking across a carpet or from brushing your hair. if your
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of H2O will be: CN-(aq) + MnO4-(aq) --> CNO-(aq) + MnO2(s)
How many grams of NaOH are needed to neutralize 20.0 mL of 0.150 M H2SO4 solution? (b) How many liters of 0.500 M HCl(aq) are needed to react completely with 0.100 mol of Pb(NO3)2(aq)
The Group 5A elements can form molecules or ions with thre, five or six covalent bonds. Predict the molecular structure and hybridization of the following substances: NH3, AsCl5 and PF6-.Why does't NF5 or NCl6- form
The unbalanced equation for the reduction of copper(I) sulfide with oxygen is given below. What mass of copper is produced from the reduction of 9.20 g Cu2S? Cu2S(s) + O2(g) Cu(s) + SO2(g)
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