60,135 results, page 53
How can we recover NaNO3 from an unsaturated solution
What is the mass of a phosphorus triioxide molecule?
What is the mass, in grams, of 7.18 x 10^24 molecules of chlorine?
why is it important to know how to separate solids from liquids
is this right? C2H6O + 3O2 = 2CO2 + 3H2O In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar and enthanol are "burned" to water vapor andCO2. Write a combustion reaction for ethanol. I need help with ...
For a chemistry lab the experiment was to carry out an acid-base titration to determine the exact concentration of a sodium hydroxide solution. Two trials were completed and the data collected was: mass of weighing paper, mass of weighing paper + KHP, mass of KHP, initial ...
Can someone please check my work? Write a paragraph describing your party. La fiesta está en una grande mansión. Tiene seis cuartos, una recamára principal, tres (guest rooms), ocho baños, un comedor, un grande patio, una piscina interior, (and outside mini golf course) y...
For the system CaO(s) + CO2(g) = CaCO3(s), I added 1.00 mol of CaO(s) to 1.00L of 0.500M CO2(g) at 200 oC. At equilibrium the [CO2] = 0.150M. What is the value of Kp for this reaction? Kp would = CaCO3/(CaO)(CO2) I do not know what to do with the 0.500M and 1.00mol. Chemistry(...
What is the pressure (in atmospheres) of the gas inside the container connected to an open-end, mercury-filled manometer as shown in the picture? The atmospheric pressure is 0.95atm. l----l | (G) l | l - --- l Hg l Hg *18cm - - --- Hg Hg HgHgHgHg what process do I use to solve...
Mr. Pennymarch, the advertising manager for Chemistry Today magazine, is responsible for selling advertising space in the magazine. The magazine deals primarily with chemical processing technology and is distributed solely by subscription. Major advertisers in the magazine are...
i cant understand anything in carbon and its compounds. can you give me any the basics of what i need to learn in carbon and its compounds Carbon has a usual oxidation state(valence) of +4 and it can bond to itself. Therefore, there are millions of carbon containing compounds...
Chemistry equilibrium? Consider the reaction 2NO(g) + O2(g) = 2NO2(g) at 430C an equilibrium mixture consists of 0.020 mole of O2, 0.040 mole of NO, and 0.96 mole of NO2. Calculate Kp for this reaction given that the total pressure is 0.20 atm. I used PV=nRT to find the volume...
If you have 200 ml of a 0.1M solution of acetic acid (pka=4.75), 1. How many ml of a solution of 1.O M NaOH would you need to adjust the pH to 5.2? "Chemistry - DrBob222, Wednesday, June 29, 2011 at 8:41pm 200 mL x 0.1M = 20 mmoles. 1. ............HAc + OH^- ==> Ac^- H2O ...
I really need to have this paragraph checked to see if there is any mistakes!! My tutor has been sick all week! Thank you! Montreal est une ville exceptionnel que vous aimeriez. Si vous aviez le temps, vous ne regretteriez pas votre decision. Montreal est situe dans le Quebec ...
Urgent! Can someone please look these over? The sentences are very vague (welcome to online schooling, I guess). Some of them are questionable. Please help! Need to write whether the sentence is a "POINT" or "TOPIC" sentence. Point Sentence-Announces the topic of a paragraph ...
What is the role of energy in physical changes? Please and thank you!!!
how to calculate the mass of hydrogen in 150.0 g of ethene
How do i Convert 170 degress C to kelvins? K = 273 + C
Is Isopropyl alcohol an acid or a base? neither
How would I explain how I arrived at the following EF in words?
How many equivalents are in 1.75L of a 8.2M solution of sulfuric acid.
How many equivalents are in 1.75L of a 8.2M solution of sulfuric acid.
How do i balance this equation? Al+N2---->AlN 2Al + N2 ----> 2AlN
How do i convert temperature? from what to what. Celsius + 273.16 = Kelvin
you need a solution of 195 mg/dL., what would it be in g/L? [1g=1000 mg, 1L=10 dL]
the number of moles of O2 needed to produce 14.2g of P4O10 from P?
Determine the molarity of 30% (w/w) KOH of specific gravity 1.29. Thanks for any help.
I still don't get it. See question in previous post
Calculate the number of hydrogen atoms in 20.0 g of CH3OH
How do I find the number of neutrons is the isotope lithium-7
I was asked to draw the resonance structure for N2O, How do I do that?
Galactose and Fructose are called isomers of glucose. Why?
what is the direction and how do you find it for the dipole moment in scl2? to the 2 or the cl?
The diamenter of a carbon atom is 77 pm. Express this measurement in um?
How does acetaldehyde impurity arise in the fermentation?
What is the lewis dot structure for Fluoride, F1- and Mg2???
How many atoms of H are in a mixture of 3.49 x 10^23 molecules of H2O and 78.1g of CH3OH?
what are the van der waals coefficients (a and b) for nitrogen?
whats the pH if 25.0 ml of 2.0 M NaOH is added to 1.00 L of pure water?
[Co(NH3)2(en)2]^+3 what is the A)coordination no. B)no. of ligands C)Oxidation state of Co
What property of liquids and solids is crucial in chromatography?
How do you find the simple configuration of electons for an element?
Can someone define and describe Molecular water?
How many valence electrons are in ClO2. I think its 17...is it correct? Thanks.
The maximum number of electrons that can be accomodated in a p subshell is A.2 B.4 C.6 D. 8 E. 10
Which of the following elements has the smallest ionization energy? A. F B. Be C. B D. Mg E. C
what is theoxidation state of sulfur in Fe2(SO4)3?
How many electrons are in the p-orbital of the methyl radical (CH3^.)
What is the purpose of the outerjacket on a fractionating column?
write the resonance desription for the following A. ClNO2 B. NO-2
How do you make CIF2 into a Lewis Structure
Is it possible for an electron to have n=2 l=1 m=-2? EXPLAIN PLEASE
How many protons, neutrons, and electrons are in 24 +2 Mg 12 is it 12p, 14e- or 10 e?
Calculate the percent composition of calcium acetate.
Why can Copper have both a +1 and +2 oxidation state?
What are some paramagnetic inner transition metals?
What (metric) units are used for mass measurements?
what is the molecular structure around oxygen in water?
what is the name for a solution that can dissolve no more solute ?
im confused with significant numbers how do you do them.. like for example 64 mL
How do u find the Hvap if you only know the slope is -.002 ?
Are dispersion forces in hexane weaker than that of pentanol?
Why is ice used during the sublimation process?
what are two regions make up all atoms?
Does anyone know why amines show high solidility in water?
Why do amines exhibit high solubility in wate?
and we had to round this was the question
The units for a first order rate constant are: M/s 1/M*s 1/s 1/M^2*s
how did you find the percent yeild for the eugenol benzoate?
How does the pH of human blood remain extremely constant?
explain why hexane is a non polar molecule? thanks
explain the polarity in ethanol? why it is polar molecule? thanks
What is the mass in grams of 1.02X10^24 molecules of NaCl?
calculate the volume of 750.0g of gold.
AT STP, WHICH OF THESE SUBTANCES IS MOST SOLUBLE ON H20?
How do you tell what dyes are more polar than others?
do gases have a high or low density?
What would be the the oxidation number of (N): * NaNO3 * NH4Cl
What molarity of NaOH would produce a pH of 10? And how do you calculate it?
how do you write the reduction half-reaction of ions?
How do i figure out the electron configuration of Fe(C2O4)3^3- ?
how to write this as a net ionic equation? Al(s)+ H2SO4(aq)
why are anions always larger than the atoms from which they are formed
how are molecules and poly atomic ions similar?
How many grams of KCl can you dissolve in 50. g of water at 70 degrees C?
IF ANYONE CAN HELP ME WITH MY HOMEWORK AND EXPLAIN EXACTLY HOW TO GET THE ANSWERSSS PLEASEEE HELP
give the [OH] of a vinegar solution that has a pH of 3.2. i got 6.3 *10^4. is that right?
What are advantages/disadvantages to using esters in foods?
Where can I find a picture of the molecular orbital diagram for OH-?
what are the components of one formula unit of CaF2?
What are the three major types of chemical bonds?
how would you state Ag2CrO4 acting as a cathode?
How do you figure out what substances form a buffer?
What is the newman projection of meso-2,3-dichlorobutane?
WHAT IS THE BEST COMBINATION OF REACTANTS FOR CH3CH2CH2CH2OCH3
Describe the parts of a calorimeter and the function of each part.
calculate the number of fluid ounces in 6.03 gal.
What are some examples of homogeneous and heterogeneous substances?
Conversion Factor how fast is 55mi/hr in ft/sec?
whats the use of an iron ring and a descrption for it