Please, I need to get this right. No one is yet to get it right, it has been answered on Chegg but is wrong
In a psychrometric process, Volume of a classroom = 300 m^3. and temperature in the room is T= 20 oC, P=100 kPa relative humidity = 50%
if all the water vapor of air in the room is converted to liquid at the same temperature, what is the volume of the liquid water (mL).
I believe the Volume of water vapor should equal volume of air and equal volume of the room, since its an enclosure. I also know that the volume is going to decrease if water vapor is completely converted to liquid water. How is this calculation done to get the right volume of liquid water
Kindly help with this.
In: Chemistry
Explain why temperature has an effect on reaction rate.
Explain why concentration has an effect on reaction rate.
In: Chemistry
The average human body contains 6.50 L of blood with a Fe2+ concentration of 2.50×10^−5 M . If a person ingests 12.0 mL of 17.0 mM NaCN, what percentage of iron(II) in the blood would be sequestered by the cyanide ion?
For example, the iron(II) ion, Fe2+Fe2+, can combine with the cyanide ion, CN−CN−, to form the complex [Fe(CN)6]4−[Fe(CN)6]4− according to the equation
Fe2+(aq)+6CN−(aq)⇌[Fe(CN)6]4−(aq)Fe2+(aq)+6CN−(aq)⇌[Fe(CN)6]4−(aq)
where Kf=4.21×10^45
This reaction is what makes cyanide so toxic to human beings and other animals. The cyanide ion binds to the iron that red blood cells use to carry oxygen around the body, thus interfering with the blood's ability to deliver oxygen to the tissues. It is this toxicity that has made the use of cyanide in gold mining controversial. Most states now ban the use of cyanide in leaching gold out of low-grade ore.
In: Chemistry
This experiment involves testing protein stability in a variety of solutions. Describe the effect you suspect each will have on the protein’s environment (ex: increases pH, competes for hydrogen bonds, increases hydrophobicity, etc.) and predict whether or not the protein will remain folded. Look up the structures of any chemical you are not familiar with.
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A typical aspirin tablet contains 319 mg acetylsalicylic acid. Calculate the pH of a solution that is prepared by dissolving two aspirin tablets in enough water to make one cup (249 mL) of solution. Assume the aspirin tablets are pure acetylsalicylic acid, Ka=3.3x10^-4.
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Why is AgNO3/ethanol especially suitable for comparing the relative reactivity of various alkyl halides toward SN1 reactions? Comment on the nature of the nucleophile, the nature of the solvent and the ease with which the occurrence of reaction can be detected
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Why was Cu prepared from a pure metal? Why was Ca prepared from a salt? Why is CaCO3 a better salt for this purpose than CaCl2?
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an unkown hydrocarbon contain carbon hydrogen and oxygen combustion of 1.6 g of the hydrocarbon produces 1.0286 g h2o and 3.7681 g co2. what is the empiral formula of this compound?
In: Chemistry
Urea,NH2CONH2, is manufactured from ammonia and carbon dioxide according to the following equation: 2 NH3(g) +CO2 (g) ->NH2CONH2 (aq)+H2O (l)
What volume of ammonia gas at 25 o C and 1.5 atm is needed to make 1500g of urea?
Please explain!
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A solution containing 87.32g of dissolved mercury (III) nitrate is mixed with a solution containing 34.62g of dissolved sodium sulfate. A chemical reaction occurs, and a precipitate is produced. How many grams of solid are produced from the reaction and how many grams of excess reactant remain after the reaction is complete?
In: Chemistry
As a sample of what you know about equilibrium, select THREE items from this list and discuss how each of them pertains to equilibrium: Colligative properties, Free Energy, Batteries, Temperature, pH.
In: Chemistry
Use the equation 6KI + SHNO3 ----> 6KNO3 + 2NO + 3I2 + 4H2O. Note that 1 mole of any gas is measured at STP will occupy 22.4L.
a.) If 38g of KI are reacted, what mass of KNO3 will form?
b.) What volume of NO gas, measured at STP, will produced if 37.0g of HNO3 are consumed?
c.) If 0.50 mole of KI is to be reacted, what volume (in mL) of 6.00 M HNO3 will be required?
d.) When the reaction produces 6.0 moles of NO, how many molecules of I2 will be produced?
e.) How many grams of molecular iodine can be obtained by reacting 45.0mL of a 0.350 M KI solution?
In: Chemistry
5.00 moles of N2 and 8.00 moles of H2 are placed in an empty container, the container is heated to 887 degrees Celsius, and a catalyst is added that catalyzes the rxn. of these gases to form NH3 as the only product. At equilibrium 1.00 mole of NH3 is found to be present. Find number of moles N2 and moles H2 present at equilibrium.
* I think that the concentrations of the reactants changes by 1 mole but I'm not enitrely sure if that is correct.
In: Chemistry
2) You have 25 ml of an ATP solution. You take 30 µl and dilute to a final volume of 10 ml. The absorbance of this solution is 0.432. What is the concentration of the undiluted ATP solution? (molar extinction coefficient = 15,400 M-1cm-1).
If you could upload image the solution you worked out on paper, that would be preferred.
In: Chemistry
1.What is the molality of a solution consisting of 1.34 mL of CCl4 (D=1.59 g/mL) in 65.0 mL of CH2Cl2 (D=1.33 g/mL).
2. Calculate the molarity of 3.58 m aqueous RbCl solution with a density of 1.12 g/mL.
3.An acidic solution containing 571.4g H2SO4 per liter has a density of 1.329 g/mL. Calculate the molality of H2SO4 in this solution.
In: Chemistry