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November 26, 2014

Search: Rank the following gases in order of decreasing rate of effusion. Rank from the highest to lowest effusion rate. H2S H2 C3H8 He Ar

Number of results: 56,667

CHEMISTRY 45
Calculate the average speed of an oxygen gas molecule, O2, at 21.0∘C . ------------------------- How much faster do ammonia (NH3) molecules effuse than carbon monoxide (CO) molecules? --------------------------- Highest rate of effusion to lowest rate He, H2S, C3H8, Ar, H2
October 6, 2014 by Anonymous

Organic Chem
Rank these conformational isomers in order of decreasing potential energy? Highest on the left and lowest on the right. To rank items as equivalent, overlap them. Here is a link to the picture of the problem: ht+tp+:/+/bit+.ly/+8ZHeDA Remove the '+' sign
April 19, 2010 by Random User

Chemical
Which is the theoretical effusion of NH3 and the theoretical effusion of HCl? The rate of effusion is proportional to 1/(square root of the molar mass).
January 30, 2007 by Geisha

Physics
Hello I am trying to solve this physics problem related to effusion of gases. The following data is given and I am asked to calculate the rate of effusion The data given; depth/thickness (t) Surface area (A) diffusion coefficient (D) Can someone help me out? The only law ...
December 15, 2012 by Sam

Chemistry
Rank the carbon-carbon bonds in order of decreasing bond length. Rank carbon-carbon bonds from highest bond length to lowest. To rank bonds as equivalent, overlap them. 1,2,3
October 11, 2011 by Caitlin

Chemistry
Graham's Law predicts that the ratio of the rate of effusion of gas X to the rate of gas Y equals the square root of the INVERTED ratio of their molar masses: Rate of X/Rate of Y = SQRT(My/Mx) What is the ratio of rate of effusion of Helium to Nitrogen gas? Enter your answer ...
October 28, 2012 by Anonymous

Chemistry pretty urgent!!!!!!!
Chemical bonding question! The partial Lewis structure that follows (Figure 1) is for a hydrocarbon molecule. In the full Lewis structure, each carbon atom satisfies the octet rule, and there are no unshared electron pairs in the molecule. The carbon-carbon bonds are labeled 1...
November 4, 2014 by G-Dogg

chem
Rank the following species according to the decreasing energy needed to raise the temperature of 10.0g of the substance by 25.0 degrees celsius Rank from most to least energy needed. Rank these in order of the question. copper aluminum cast iron silver water
February 1, 2013 by mira

Chemistry
Rank the following 4 compounds in order of lowest to highest freezing point. Enter the formulas in the spaces provided. For example, enter CH4 as CH4. H2O MgO CH4 H2S
November 19, 2011 by Whats Good

Chemistry
Rank these to highest pH to lowest pH: NH3, KOH, Ca(OH)2, HBr, HBrO I put these in the same order for highest pH to lowest but still get it wrong.
February 20, 2013 by Anon

chemistry
The rate of effusion of a particular gas was measured and found to be 25.0 mL/min. Under the same conditions, the rate of effusion of pure methane (CH4) gas is 46.4 mL/min. What is the molar mass of the unknown gas?
October 31, 2010 by Mattie

chemistry
The rate of effusion of a particular gas was measured and found to be 23.0 mL/min. Under the same conditions, the rate of effusion of pure methane (CH4) gas is 46.2 mL/min. What is the molar mass of the unknown gas?
November 7, 2010 by Anonymous

chem
compund containing only C, H, and N yeilds the following data- 1. complete combustion of 34.3 mg of the compund producedmg of CO2 and 40.3 mg of H2O 2. a 65.2mg sample was analyzed by the dumas mthod, giving 35.6 mL of N2 at 740 torr and 25C 3. effusion rate as a gas was 24....
November 16, 2007 by mel

chemistry
Rank gases from highest average molecular speed to lowest Ne, HBr, CO
January 21, 2011 by psk

chemistry
Given the compounds H2S, NH3, and SO2. Determine the order o boiling points. Rank them from highest to lowest boiling point. Give an explanation for your ranking by the electronegativity data a by type of intermolecular force.
December 5, 2010 by regina

Chemistry
A compound containing only C, H, and N yields the following data. (i) Complete combustion of 34.8 mg of the compound produced 33.3 mg of CO2 and 40.9 mg of H2O. (ii) A 66.3-mg sample of the compound was analyzed for nitrogen by the Dumas method, giving 36.2 mL of N2 at 740. ...
November 20, 2012 by Darrel

chemistry
Arrange the following in order of decreasing stability. A blank molecular orbital diagram (Part A 1 figure) has been provided to help you. Rank the fluorine species from most to least stable. To rank items as equivalent, overlap them. F2, F2+, F2-
November 19, 2008 by defferan

chemistry
intermolecular forces Rank the following substance from highest melting point to lowest melting point. My teacher gave a list of compounds: H2O, NO2,F2,CI2 and to have a high melting point means that you need a stronger IMF. Rank the following substances from highest freezing ...
March 17, 2009 by jen

chemistry
1) Rank the elements, aluminum, sodium and phosphorus, in order of decreasing conductivity. 2) Rank the elements aluminum, gallium, and boron in order of decreasing conductivity
November 15, 2009 by Adam

chemistry
!. Which of the following structures would you expect to have a net dipole moment? HC(triple bond)CH NH4+ H2C(double bond)O BCl3 2. Rank the sp, sp2, and sp3 orbitals in order of decreasing (highest to lowest) energy. a)sp> sp2>sp3 b)sp3>sp2>sp c)sp2>sp>sp3 d...
February 15, 2013 by Maura

Chemisty !!
(a) Why do the densities of most liquids increase as they are cooled and solidified? How does water differ in this regard? (b) Rank the following compounds in order of decreasing surface tension at a given temperature, and explain your ranking. CH3CH3, CH3OH, H2C=O (c) Rank ...
September 2, 2013 by Xiang !

Chemistry
Suppose there is a simulation of 25 helium molecules and 25 nitrogen molecules on the right hide of a box before the rate of effusion. Calculate the theoretical ratio of rate of effusion of Helium to Nitrogen: **Which is the Square root of 28/4 = 2.646** Suppose you carry out ...
November 5, 2012 by Anonymous

Chemistry
The following questions refer to the following acids and bases. A) Hydrazoic acid HN3 Ka = 1.9 x 10^-5 B) Hydrofluoric acid HF Ka = 6.8 x 10 ^-4 C) Nitrous Acid HNO2 Ka = 4.5 x 10^-4 D) Phenol C6H5OH Ka = 1.3 x 10^-10 E) Aniline C6H5NH2 Ka = 4.3 x 10^-10 1) which compound is ...
April 6, 2014 by Zachary

Math
I really really need help on this one. I have no clue on how to do it; here it is... Determine the maximum and minimum values of the following set of numbers. 3, -36/7, -1, -2/3, 5/4, -5, 26/9 Express the fractions as mixed numbers. For example, 26/9 = 2 8/9 Then rank them ...
July 28, 2007 by G. Torres

O.Chem -> PLEASE CHECK!!
Please check these out for me, if I am correct: Match the following statements with SN1 or SN2 reactions: 1) The order of reactivity in alkyl halides is methyl>primary>secondary>tertiary 2) There is an intermediate carbocation 3) The rate-limiting step involves the ...
March 12, 2008 by K

chemistry
A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 52 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 24 s for 1.0 L of O2 gas to effuse. Calculate the molar mass ...
October 10, 2010 by Jennifer

Chemistry
Rank the following ionic compounds by lattice energy. Highest to Lowest LiCl MgO Na2O Beo Na2S
January 15, 2010 by Saira

Chemistry
Rank the following ionic compounds by lattice energy. Highest to Lowest LiCl MgO Na2O Beo Na2S
March 30, 2012 by Jeremy

Chemistry
Rank the following ionic compounds by lattice energy. Highest to Lowest LiCl MgO Na2O Beo Na2S
March 30, 2012 by Jeremy

chem
Rank the following compounds in order of decreasing boiling point: KCI CO2 CH2O
December 7, 2008 by Natash

O.Chemistry *****PLEASE CHECK*****!!!!
Please check these out for me, if I am correct: Match the following statements with SN1 or SN2 reactions: 1) The order of reactivity in alkyl halides is methyl>primary>secondary>tertiary 2) There is an intermediate carbocation 3) The rate-limiting step involves the ...
March 14, 2008 by K

physics
Rank the beat frequency from highest to lowest for the following pairs of sounds:a. 876 Hz, 871 Hz b. 786 Hz, 784 Hz c. 721 Hz, 728 Hz d. 542 Hz, 541 Hz
April 29, 2012 by Jim

intro to chem
disolving sucrose, NaCl< and calcium chloried affect the boiling point of frezing point of water. Assuming that you have 0.1m solution of all these 3 compounds: a)rank then in order of decreasing freezing point. b) rank in order of increasing boiling point c)why do the ...
October 27, 2010 by julia

statistic
Identify the level of measurement for the following? 1)What state/country were you born? 2)What is the temperature outside rigth now? 3)Rank all of the courses you are currently.The class you look most forward to taking will be rank one ,next two ,and so on . what is the rank ...
July 13, 2011 by mike

chemistry
Rank the following compounds in order of decreasing boiling point: sodium fluoride ( \rm NaF ), methane ( \rm CH_4 ), fluoromethane ( \rm CH_3F )
August 21, 2011 by nurul

Chemistry
I have a problem that I wasn't sure how to do, and I want to see if my reasoning behind getting the answer is correct. Question: If .0129 mol of N2O4 effuses through a pinhole in a certain amount of time, how much NO would effuse in that same amount of time under the same ...
January 1, 2007 by Dave

Chemistry
It takes 32 seconds for a certain number of moles of H2 to effuse through a leak in a tank. An unknown gas was later places under the same conditions; it took 1:39 for the same number of moles to effuse. Find the molecular mass of the gas. I set it up like this: rate of ...
January 7, 2007 by John

Chemistry
(a)What is the bond order of the diatomic molecule BN? (b) Is BN paramagnetic? (c) Rank the following compounds in order of increasing bond energy: B2, N2, BN. (d) Rank the following compounds in order of increasing bond length: B2, N2, BN.
November 18, 2012 by b

chemistry
Rank these from lowest to highest pH without using a data table: NaF NaCl AlCl3
June 11, 2008 by bill

college chemistry
Rank from highest to lowest vapor pressure.CH3CH2CH2CH2OH,CH4,CH3CHCH2CH3CH3,CH3CH2CH2CH2CH3
August 31, 2012 by deb

chemistry
Rank these ions according to ionic radius (lowest to highest) Mg^2+, N^3-, O^2-, Na^+, F^- can you explain how you got your answer? thanks!
December 1, 2012 by dr. bob rocks

Chemistry
Rank the following solutions in order of increasing acidity. 1 M phenol 1 M boric acid 1 M cyanic acid 1 M formic acid 1 M hydrochloric acid 2. Rank the following solutions in order of increasing basicity. 1 M C3H5O3Na 1 M KF 1 M KOCN 1 M KOCl All I know is that HCl is the ...
October 23, 2011 by Neha

Chemistry
A vessel containing air (79% N2 and 21% O2) at 5bar and 280K is placed in a vacuum and a tiny hole is punched through the lid of the vessel. If the rate of effusion of O2 is 1.25x10^-7mol/s, at what rate is the nitrogen effusing? (in mol/s)
October 4, 2012 by Nancy

Statistics
In a normal distribution of scores, four participants obtained the following deviation scores: 11, 22, 15, and 210. (a) Which score reflects the highest raw score? (b) Which score reflects the lowest raw score? (c) Rank-order the deviation scores in terms of their frequency, ...
February 2, 2014 by Joy

Chemistry
Rank the ions in order of decreasing size. Sr2+, Ba2+, Cs Cs>Ba>Sr
November 9, 2007 by Sally

Statistics
In a normal distribution of scores, four participants obtained the following deviation scores: +1, -2, +5, and -10. (a) Which score reflects the highest raw score? (b) Which score reflects the lowest raw score? (c) Rank-order the deviation scores in terms of their frequency, ...
February 2, 2014 by Sammie

Chemistry
Rank from highest to lowest melting point of the following molecules: ethane, 2-butane, trans-2-butane, and cis-2-butane. please explain how you come to your answer.
June 5, 2008 by Jennifer

Chem
Rank thefollowing elements in order of decreasing atomic radius. N, B, Be, Li? I thought it was N, B, Be, Li
November 14, 2011 by Anna

chemistry
How do you compute the rate of effusion of one gas compared to another, like Neon to CBr4?
March 16, 2011 by Suzanne

Organic Chem
I need help, please, with the following question: Match the following groups sccording to their priority (lowest group = 4 & highest group =1) Matching Pairs: Priority rank options: -CH2CH3 3,4,2,1 -CH2NH2 3,4,2,1 -CH2Br 3,4,2,1 -CH2OH 3,4,2,1
February 3, 2008 by Dawn

chemistry
Assuming equal concentrations, rank these aqueous solutions by their freezing point.? K2CO3, Li3PO4, Sn(ClO3)4, NH4I I tried to rank them according to the number of ions but i can't get it. highest freezing point --> lowest freezing point Sn(ClO3)4 -> Li3PO4 -> K2CO3...
February 19, 2012 by Eric

Chemistry
Rank in order of decreasing average molecular speed at 21 degrees celsius: Ne, HBr, SO2, NF3, CO
November 2, 2009 by Emory

Organic Chemistry
Rank the following compounds in DECREASING
October 25, 2010 by Please help

pH levels
Rank the following solutions in order of decreasing [H3O^+]. .10 M HC2H3C2 .10 M HC6H5O .10 M HF ,10 M HBr I think the correct order is: HBr>HF>HC2H3C2>HC6H5O am i right?
March 21, 2010 by Kyle

Chemistry
Rank the following fertilizers in decreasing order of mass percentage of nitrogen: NH3 NH4NO3 (NH4)2HPO4 KNO3 (NH4)H2PO4 (NH4)2SO4
January 16, 2011 by Anonymous

Chemistry
Rank the elements Ca, As, K, Br from highest to lowest first ionization energy. (Type your answer using the format W>X>Y>Z.) Would the answer be: K>Ca>As>B
March 23, 2010 by Tiffany

Chemistry
Rank the following compounds in order of their solubility in water. (most soluble = 1 -- least soluble = 4)--Note that for the same solubility rank the same (a tie). (CH3)2CHOH HOCH2CH(OH)CH2OH CH3CH2OH (CH3)3COH
March 14, 2013 by Maddie

ACT
This is kinda of stupid question but I really need to know. What does class rank mean on ACT score report?? Is it the rank for ACT test takers in your school? or is it the rank for your grades in high school ??
May 21, 2008 by gigi

Chemistry
Rank the following atoms in terms of decreasing atomic radius. 1. Na, N, O, Mg, F 2. F, O, N, Mg, Na 3. F, Mg, Na, O, N 4. Na, Mg, N, O, F 5. F, O, N, Na, Mg
November 18, 2011 by Bob

Chemistry
Rank the following atoms from highest to lowets energy: Ca, Be, Ba, C
January 15, 2013 by Anonymous

chemistry
Determine the overall orders of the reactions to which the following rate laws apply: a. rate = k[NO2]^2 b. rate = k c. rate = k[H2][Br2]^1/2 d. rate = k[NO]^2[O2] I think the answers are: a. Second Order b. Zero Order c. First Order for H2 and One-half order for Br2 d. Second...
July 18, 2010 by Sara

physic
2. Rank the following in the order of how much of a corona discharge they would produce, from highest to least (e.g., if D is highest, then A, C, and B is lowest. enter DACB). Explain your response. a. a large round metal ball hooked to a high voltage battery b. a sharp metal ...
January 21, 2011 by sabrina

science
2. Rank the following in the order of how much of a corona discharge they would produce; from highest to least (e.g., if D is highest, then A, C, and B are lowest. entering DACB). Explain your response. a. a large round metal ball hooked to a high voltage battery b. a sharp ...
June 22, 2011 by i

Math
For a normally distributed distribution of variable x, where the mean is 50, and standard deviation is 2.5, calculate: a) the percentile rank of x=45 b) the z-score of x=52.6 c) the percentile rank of x=58 d) the 29.12th percentile e) the 89.74th percentile f) the z-score of x...
April 25, 2010 by Ally

chem hw
Assuming equal concentrations, rank these aqueous solutions by their freezing point: Li2SO4, Li3PO4, SnCl4, NH4Br. (from highest freezing point to lowest freezing poinT) Is the order Li3PO4, Li2SO4, SnCl4, and NH4Br???????? If not what is the correct order?
February 19, 2012 by Amy

CHemistry...Please help
Rank these liquids by their expected surface tension. Rank from greatest to least surface tension. 1.CH3CH2OCH3 2.CH3CH2CH2-OH 3.CH3CHOHCH2-OH 4.HO-CH2CHOHCH2-OH So as Dr. Bob mentioned to me before surface tension is how the surface molecules stick together. Does that mean 1 ...
January 19, 2009 by Saira

chemistry
If the ratio of the rate of effusion of an unknown gas to that of CO under the same conditions is 0.7978, calculate the molar mass (g/mol) of the gas
January 15, 2010 by eng

Physics
Four objects - a hoop, a solid cylinder, a solid sphere, and a thin, spherical shell - each has a mass of 4.59 kg and a radius of 0.252 m. (a) Find the moment of inertia for each object as it rotates about the axes shown in the table above. hoop____ kgm2 solid cylinder____ kg...
March 19, 2010 by Ana

Chemistry
We apply the same amount of energy to 10.0-g samples of aluminum, and silver which begin at the same temperature.Rank the metals from highest to lowest temperature after the heat is applied.
May 10, 2012 by Chris

Calculus
In increasing order, rank: 3^ln 2, 2^3, 2^ln 3 *do not use a calculator, and explain your choices Obviously, 2^3=8 So, instinctively, I entered the other values into my calculator just to rank the quantities using decimal places. However, in my calculator, 3^ln 2 and 2^ln 3 ...
October 3, 2010 by Jon

Organic Chemistry
Ooops sorry! Please rank the following compounds in DECREASING order of their reactivity toward the SN2 reaction with sodium ethoxide in ethanol. a. methyl chloride b. isopropylbromide c. t-butyliodide d. methyl iodide e. ethyl chloride I have an answer, I'm just not sure if ...
October 25, 2010 by Please help

linear algebra
which of the following sets of vectors span R^3? a.){(1, -1, 2), (0, 1, 1)} b.) {1, 2, -1), (6, ,3, 0), (4, -1, 2), (2, -5, 4)} c.) {(2, 2, 3), (-1, -2, 1), (0, 1, 0)} d.) {(1, 0, 0), (0, 1, 0), (0, 0, 1), (1, 1, 1)} can someone show the steps to check for one of them and i ...
July 19, 2007 by chris

Physics
The atomic mass of a nitrogen atom (N) is 14.0 u, while that of an oxygen atom (O) is 16.0 u. Three diatomic gases have the same temperature: nitrogen (N2), oxygen (O2), and nitric oxide (NO). Rank these gases in ascending order (smallest first), according to the values of ...
October 27, 2014 by Bobby

economics
Where does Bexar County rank among texas counties in per capita income? <br><br> Where does Cameron County rank among texas counties in per capita income? <br><br> what was the inflation rate in hungary in 1945-1946?
October 30, 2007 by K

chemistry
if 2 sealed containers, one containing carbon dioxide and the other containing methane were opened at the same time which gas would have the fastest rate of effusion? show work.
March 7, 2011 by john

Chemistry
Assuming equal concentrations , rank these solutions by pH. RbOH(aq), NH3(aq), HF(aq) HBr(aq), Ca(OH)2(aq). I know the most acidic solution has the lowest pH and the most basic solution has the highest pH. But how am i supposed to know the pH if i don't know the concentration ...
October 17, 2011 by Nia

Chemistry
Uranium-235 can be separated from U-238 by fluorinating the uranium to form UF6 (which is a gas) and then taking advantage of the different rates of effusion and diffusion for compounds containing the two isotopes. Calculate the ratio of effusion rates for 238UF6 and 235UF6 ...
December 7, 2009 by Charlie

statistics
Measurement Scales Practice 1. Indicate the first letter (N, O, I, R) of the highest possible scale for each of the following measures, where N is lowest and R is highest: Measure Highest Scale a. Feet of snow Interval b. Brands of carbonated soft drinks Nominal c. Class rank ...
June 1, 2013 by Lynn

chem
how would you set this problem up? An unknown gas effusees at .850 times the effusion rate of nitrogen dioxide, NO2. Estimate the molar mass of the unknown gas.
June 2, 2008 by Kayla

chemistry
The two isotopes of uranium, 238U and 235U, can be separated by effusion of the corresponding UF6 gases. What is the ratio (in the form of a decimal) of the root-mean-square speed of 238UF to that of 235UF6 at constant temperature?
November 9, 2010 by Jess

CHEMISTRY
Assuming equal concentrations, rank these aqueous solutions by their freezing point: LiSO4, Li3PO4, SnCl4, NH4Br. (from highest freezing point to lowest freezing poinT) Thanks.
February 18, 2012 by Kylie

math
calculate the effective yield, then rank them from highest yield to lowest yield: 12% compound annually 11.8% compound quarterly 11.9% compound semiannually
April 18, 2011 by darrell

Chemistry
Uranium-235 can be separated from U -238 by fluorinating the uranium to form UF 6 which is a gas) and then taking advantage of the different rates of effusion and diffusion for compounds containing the two isotopes. Calculate the ratio of effusion rates for 238 UF 6 and 235 UF...
August 10, 2013 by Anonymous

chemistry
The alkanes are a homologous series of compounds containing only carbon and hydrogen that have the general formula . Members of this series include butane (), 2,2-dimethylpentane (), hexane (), and heptane (). The boiling points of some members of this homologous series are ...
January 24, 2009 by isthiscorrect

Chemistry
Can someone please help me with these chemistry questions...I just don't get it! 1. Using the following elements, rank them in order of increasing melting points, based on the periodic trend for melting point: Sr, Mg, Be, Ba? Would it be Be, Mg, Sr, Ba or would it be Ba, Sr, ...
September 16, 2009 by Taylor

percentile rank
i would like to able to find the percentile rank of a z score 0.313152 can someone tell me how to do this.
April 9, 2011 by Ann

Physics check
Rank the following transitions in order of low to high frequencies: 3-2; 4-3; 2-1; 5-4; 5-3; 3-1; 4-2. 5-3; 4-2; 3-1; 5-4; 4-3; 3-2; 2-1 ?
April 12, 2008 by Jeny

chem
rank strongest acid to weakest acid? rank strongest acid to weakest acid H3CNH2 CH3C (triple bond) CH CH2=CHCH3 H20 CH4 i tried to rank them using the Pka values but I couldn't find the pKa value of the alkyne and I thought the H3CNH2 was the strongest but it's not?
February 15, 2011 by Yoo

Chemistry
Please rank the following compounds in DECREASING order of their reactivity toward the SN2 reaction with sodium ethoxide in ethanol. a. methyl chloride (CH3Cl) b. isopropylbromide ((CH3)2CHBr) c. t-butyliodide (CH3)3Cl) d. methyl iodide (CH3I) e. ethyl chloride (CH3CH2Cl) I ...
October 25, 2010 by Please help

Stats
If a student's rank in a class of 300 students is 111, find the student's percentile rank
December 7, 2013 by Justin

Statistic in Social Science
The verbal part of the Graduate Record Exam (GRE) has a mean of 500 and a standard deviation of 100. Use the normal distribution to answer the following questions: a. If you wanted to select only student at or above the 90th percentile, what verbal GRE score would you use as a...
April 29, 2014 by Rhea

math
calculate the effective yield, then rank them from highest yield to lowest yield: 12% compound annually 11.8% compound quarterly 11.9% compound semiannually 11.7% compound daily
April 18, 2011 by charlene

Chemisty
I do not know how to rank the polarity between these, i have also included the boiling point in degrees C but it still does not help. The only thing that i think is that D is the least polar because it is symmetrical, and i think A is the most but I'm not sure about the rest. ...
August 12, 2014 by Polarity

algeba
if a student's rank in a class of 400 students is 44 find the student's percentile rank.
July 5, 2011 by john peters

AP Chemistry
The rate of effusion of unknown gas X is found to be about 1.5 times that of SF6 gas (MW=146 g/mol) at the same conditions of temperature and pressure. What is the molecular weight of gas X? Answer in units of g/mol
February 16, 2014 by Gabriella

Chemistry
Rank the crystal lattice structures in order of decreasing efficiency of space in the structure? Face centered cubic, body centered cubic, simple cubic, hexagonal close packing.
May 14, 2009 by gnozahs

Chemistry
Calculate the ratio of the effusion rate of oxygen gas (O2) to that of nitrogen gas (N2). Express your answer in decimal form and calculate your answer to at least four sig figs.
September 23, 2010 by Mary

Chemistry
Assume equal concentrations, rank these solutions by pH HBrO, Ca(OH)2, HCl, KOH, NH3 Here's how I ranked it: highest: Ca(OH)2 > HCl > KOH > NH3 > HBrO lowest is this correct? if not please tell me why!
April 16, 2012 by Katherine

algebra
if a student rank in a class 400 is 87 waht id the student percentile rank
June 11, 2012 by marie

chem
Rank the size of a change in temperature of one degree Fahrenheit, one degree Celsius, and one kelvin. In other words, if a thermometer were to show that the temperature outside increased by these amounts, which change would feel the largest? If any of the options are the same...
September 16, 2013 by Cf

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