09/28/18

what does it mean when we say peptide 35 or peptide2 is that the location of the amino acid
what does it mean when we say peptide 35 or peptide2is that the location of the amino acid
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09/28/18

If 125. mg of fluorine-18 is shipped at 10:00 A.M., how many milligrams of the radioisotope are still active after 330 min ?
 Chemistry 106, conversion is involved
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09/28/18

Need help calculating final dilution factor for double dilution
So I am trying to calculate a dilution factor of an already diluted stock suspension. So my initial solution has 100ul of cell suspension, 400ul of PBS and 250ul of dye. My calculated DF for this... more
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09/27/18

Separating a mixture containing lead carbonate, sodium chloride, and 1.4-dicholorobenzene?
How would I go about in separating the components in a mixture containing lead carbonate, sodium chloride, and 1.4-dicholorobenzene? A flow diagram would be helpful.
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09/27/18

specific heat
step by step help on how to what is calculate the temp change when 1.96 kJ of heat is added too 500. g of copper
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09/27/18

calculate temp change when 10.0 kg of water loses 232 kJ of heat
need help whit above problem
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09/26/18

evaporation is a physical change
just trying to find answers to a chemisrty test.
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09/26/18

Explain what happens to cells in the following environment.
What would happen to animal cells in Isotonic, Hypertonic, and Hypotonic environment? What would happen to a plant cell in Isotonic, Hypertonic, and Hypotonic environment?   Animal cells prefer... more
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09/25/18

If 0.525 g of Fe2O3.xH2O are heated and 0.389 g of Fe2O3 are obtained
If 0.525 g of Fe2O3.xH2O are heated and 0.389 g of Fe2O3 are obtained, what is the value of x?Your answer should have three significant figures. In this case x does not have to be a whole number.
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09/25/18

Chemical Reaction with density?
I was given the equation: NaN3 --> Na2 + N2, which I balanced to:2NaN3 --> 2Na2 + 3N2 (I hope that is correct) a) Determine the number of grams of N2 are produced by the decomposition of... more
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09/25/18

write the decimal number six and three tenths
Six and three tenths
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09/25/18

DNA is a polymer as it is made from many smaller units joined together
DNA is a polymer as it is made from many smaller units joined together
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09/25/18

Planck's Constant: Chemistry
Calculate the wavelength (in nm) of a photon of light with an energy of 3.56×10-20 J.
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09/24/18

Early microscopes created by Leeuwenhoek were almost as strong as modern light microscopes.
Early microscopes created by Leeuwenhoek were almost as strong as modern light microscopes.
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09/24/18

what is the value of k for the reaction
10.00 mol of gaseous NOBr is placed into a one liter flask at 27 c, the equilibrium concentration of NO is 2.00 mol/L. what is the value of k for the reaction 2NOBr(g) <=> 2NO(g) + Br2(g) 
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09/24/18

how to get concentrations of all species
Kp for the reaction O3(g) = NO3(g) <=> O2(g) = NO2(g) is 6.0x10^20 at 450 c. if 2.00 moles of oxygen and 2.00 moles of nitrogen dioxide are placed into a 10.00 liter vessel at 450 c what will... more
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09/23/18

How many pounds of coffee worth $ 7 a pound should be added to 30 pounds of coffee worth $ 4 a pound to get a mixture worth $ 5 a​ pound?
To get a mixture worth $ 5 a pound, ___nothing pounds of coffee should be added.
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09/23/18

1/5 of my money is 17p.What is my total amount?
its a math problem I cant solve
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09/23/18

One feel sense of cooling. When he sit under the fan after taking bath. Why?
It is related to FSC chemistry topic evaporation.
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09/22/18

Why do you have to filter AgCl before you can start back titration using the Volhard method?
Why will you have to filter AgCl before you can start back titration? Is this also necessary for AgBr and AgI?
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09/22/18

How can you correct if you do not determine the precipitation of Ag2CrO4 at the stoichiometric point?
 With the Mohr method
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09/22/18

What is the reaction taking place at she when it is connected with ag+ or ag electrode to form a galvanic cell
It is a question seen on a question paper on a test paper
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09/21/18

Will equilibrium constant for the reaction change IF I write the equation 2SO2+O2 = 2SO3 in the form SO2+1/2O2 = SO3 ?
Does the value of Kp change IF I change stoichiometric coefficients, e.g. halve them? For example, if I write SO2+ 1/2 O2 = SO3 instead of 2SO2 + O2 = 2SO3? (sorry I couldn't find the reversibilitu... more
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09/21/18

What is the frequency of a photon of ultraviolet radiation with a wavelength of 365nm?
 scientific notation
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09/21/18

What is the total charge of the atom?
Atoms have the same number of protons and neutrons, but when an atom gains electrons it becomes an anion. A nitrogen anion has 7 protons ans 10 electrons. Each proton has a charge of +1 and each... more
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