November 27, 2014

Search: Na2CO2(s)+HCl(aq)NaCl+H2O(L)+CO2(g)

Number of results: 9,022

AP Chemistry
Summary of problem Photosynthesis uses CO2 & H20 to make C6H12O2. If a plant has 99 grams of CO2 & 68 grams of H2O for photosynthesis, what's the balanced equation, the mass of glucose made, & the mass of excess?
October 7, 2010 by Alex

solubility of NaCl in a H2O at 30 degrees Celcuis
June 20, 2010 by Anonymous

What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O?
February 10, 2011 by Anonymous

human biology
I hope someone can help me answer this queestion: which of the following does NOT involve the sharing of electrons? H20, HCl, NaCl, H2 or C6, H12, O6 and why? The last three compounds you listed do not exist. Among the others, NaCl does not share electrons; the Cl completely ...
March 18, 2007 by sophia

Methanol (CH4O0, which is used as a fuel in high performance racing cars, burns in the presence of )2 to form CO2 and H2O. The molar masses for all substances are given under the balanced equation. 2 Ch4O9l) + 3 O2(g)-->2 CO2(g)+ 4H2O9g) 32.0g/mol 32.g/mol 44.0g/mol 18.g/mol
April 12, 2010 by cathy

How many grams of CO2 would be produced from the following reaction sequence? HI + KHCO3 -> KI + H2CO3 H2CO3 -> H2O + CO2 if 20.0 ml of 1.00 M KHCO3 solution is mixed with 20.0 ml of 1.50 M HI solution.
November 15, 2011 by Kristi

C2H6(g) + O2(g) CO2(g) + H2O(g) (a) Consider the unbalanced equation above. What is the maximum mass of CO2 that can be produced when 21.0 g of C2H6 and 38.5 g O2 react? (b) If 24.7 g of carbon dioxide is actually produced by the reaction in part (a), what is the percent yield...
October 7, 2013 by Connor

NaOH + HCl ------> NaCl + HOH I need to figure out the quantity of heat in this reaction. The volume of the solution is 150 mL (NaCl + HOH). The inital temperature is 26 degrees celcius and the final temperature is 23 degrees celcius. That's all I know. How would I go about...
April 7, 2009 by Lena

balance the following equations and write an equation for the mole to mole relationship and the mass relationship a. Na + H2O > NaOH + H2 b. HCl + KOH > KCl + H2O
April 20, 2008 by shaggy

A Can of CO2 contains 5.75gmolecules of CO2. Calculate (a)number of moles of CO2 (b) mass of CO2.
May 1, 2014 by maris

a 110 g solid sample that is a mixture of CaCO3 and CaCl2 is reacted with 1.50 L of 1.45M HCl. Of the calcium salts, only calcium carbonate reacts with HCl- the reaction forms CaCl2 and CO2. The excess/unreacted HCl requires 0.850 L of 0.543 M NaOH to titrate it to the ...
December 3, 2012 by Cristian

Determine whether the following are endothermic or exothermic. 2H2O2 (l) 2H2O(l) + O2(g) ∆H = -190 kj C(s) + H2O (g) CO (g) + H2 (g) ∆H = +113 kj C4H9OH(l) + 6 O2(g) 4 CO2(g) + 5 H 2O(g) ∆H = -2456.1 2 C(s) + H2(g) C2H2(g) ∆H = +226.71 N2O5(...
March 13, 2008 by c

1.what is the volume of NaCl in cubic cm and cubic nm if the Length is 0.563 nm? 2. the density of NaCl is 2.17 g/cm. What is the Mass? 3. Each repeating unit is composed of 4 NaCl molecules. What is the Mass of 1 NaCl molecule?
August 20, 2011 by andi

A 1.00 g sample of enriched water, a mixture of H2O and D2O, reacted completely with Cl2 to give a mixture of HCl and DCl. The HCl and DCl were then dissolved in pure H2O to make a 1.00 L solution. A 25.00 mL sample of the 1.00 L solution was reacted with excess AgNO3 and 0....
September 21, 2012 by Adam

How many grams of HCl are produced if the following reaction yielded 27.1 grams of H3PO4? PCl5 + 4 H2O --> H3PO4 + 5 HCl
September 30, 2014 by Alex

Which solution has the lower freezing point? (a) 90.0 g CH3OH in 100. g H2O 180.0 g CH3CH2OH in 200. g H2O (b) 70.0 g H2O in 1.00 kg CH3OH 70.0 g CH3CH2OH in 1.00 kg CH3OH delta T = Kf m convert 90 g CH3OH to mols mols/kg solvent = m (kg solvent = 0.1) do the same for 180 g ...
January 21, 2007 by Stuck

which of the following is a nonelectrolyte? a)c3h8 b)h2so c)hcl d)hno 3 e)nacl
October 5, 2007 by jessica

If i used NaCl to try to precipitate Ag+ from a solution, will it be as effective as HCl?
November 16, 2008 by Chemistry

what causes the different physical properties between HCl and NaCl
September 28, 2009 by Adam

The question I am having trouble with is: Scientists originally were uncertain whether the oxygen gas produced during photosynthesis came from CO2, H2O, or from both. How could radioisotope tracers be used to settle that question? Chemistry - DrBob222 6CO2 + 6H2O ==> ...
April 15, 2013 by Madison

A rolaids tablet contains calcium carbonate which neutralizes stomach acid. If rolaids tablet neutralizes 42.15 mL of 0.320M hydrochloric acid, how many milligrams of calcium carbonate are in a Rolaids tablet CaCO3 + 2 HCl ------> CaCl2 + H2O + CO2 Pls show steps
November 15, 2011 by monique

LiOH and NaOH can each react with CO2 to form the metal carbonate and H2O. These reactions can be used to remove CO2 from the air in a spacecraft. a. Write a balanced equation for each reaction. b. Calculate the grams of NaOH and of LiOH that remove 288 g CO2 from the air. c. ...
June 2, 2010 by mikey d.

what does coefficients in equations mean, in chemical terms? 2NaCl means we have two molecules or 2 mols of NaCl. Most texts caution us not to use molecules but to stick with the latter part of the definition (moles); however, I don't have any problem with saying, 2H2 + 2 O2...
January 25, 2007 by luke

Stelco has been recently legislated to reduce total SO2 emissions from iron smelting operations. Select the most effective chemical reagent to desulfurize Stelcos gas emissions as a strategy to minimize the environmental impact of acid rain in eastern Canada: 1. NaCl 2. CO2 3...
November 8, 2009 by Danny

chemistry please help!!
For the reation: C3H8+5 02 =3 CO2+4 H2O How many moles of C3H8 are needed to make 3.60 grams of H2O? I think the ans is 0.05 moles c3h8
October 25, 2010 by Lillian

for the equilibrium H2+CO2<-->H2O+CO Kc=3.18 at 1106K. if each of the four species was initially present at 3.000M calculate the equilibrium concentration of the CO at this temperature..... OK I can get as far as equilibrium (final) H2O=3.000-x CO=3.000-xx H2=3.000+x CO2...
May 9, 2010 by Andy

college chemistry
what is the highest freezing point of H2O, NaCl, and HF
December 6, 2010 by Anonymous

Hi I have two questions and I was hoping someone could help me with them. 1. Classify the following compounds as ionic or covalent a. MgCl2 b. Na2S c. H2O d. H2S 2. Which compound in each pair exhibits the stronger intermolecular hydrogen bonding? a. H2S vs. H2O b. HCl vs. HF ...
August 2, 2007 by Alekya

Give the percent yield when 15.9 g of CO2 are formed from the reaction of 4.000 moles of C8H18 with 4.000 moles of O2. 2 C8H18 + 25 O2 -> 16 CO2 + 18 H2O
February 28, 2010 by candace

I Posted this question the other day: A 1.00 g sample of enriched water, a mixture of H2O and D2O, reacted completely with Cl2 to give a mixture of HCl and DCl. The HCl and DCl were then dissolved in pure H2O to make a 1.00 L solution. A 25.00 mL sample of the 1.00 L solution ...
September 26, 2012 by Adam-- Dr Bob, Help!

How many milliliters of 0.418 M HCl are needed to react with 52.7 g of CaCO3? 2HCl (aq) + CaCO3 (s) >>> CaCl2 (aq) + CO2 (g) + H20 (l) I got .00252 mL but its wrong. This is what I did: 52.7 g x (1 mol CaCO3/100.09 CaCO3) x (2 mol HCl/ 1 mol CaCO3)= 1.05 mol HCl ...
September 19, 2009 by Some kid

Which of the following mixtures will be a buffer when dissolved in a liter of water? a. 0.1 mol Ca(OH)2 and 0.3 mol HI b. 0.3 mol NaCl and 0.3 mol HCl c. 0.4 mol NH3 and 0.4 mol HCl d. 0.2 mol HBr and 0.1 mol NaOH e. 0.2 mol H3PO4 and 0.1 mol NaOH i think e is answer but not ...
May 21, 2010 by George2

Chemistry -help
To determine the sodium carbonate content & total alkali in NaOH, the following steps were performed:- 1) 2.0g of NaOH was dissolved in 80ml of CO2 free water. 2) 3 drops of phenolphthalein indicator were added and the solution was titrated with 1M HCl. Colour changed from ...
September 18, 2010 by anne

which solution has the lower pH? a)0.1 M HCL or 0.1 M HC2H3O2? b)0.1 M NaOH or 0.1 M NH3? c)0.1 M Na2CO3 or 0.1 M NaCl?
November 9, 2011 by denis

Hi, I posted a question yesterday : A compound contains only carbon, hydrogen, nitrogen, and oxygen. Combustion of 0.157 of the compound produced 0.213g CO2 and 0.0310 g H20. In another experiment, it is found that 0.103g of the compound produces 0.0230 g NH3. What is the ...
April 15, 2010 by Anonymous

Unsure how to solve this without a formula... I think its combustion analysis? CxHy + O2 --> CO2 + H20 CxHY has a MW=78g/mol. 100g of CxHy yields 338g CO2 and 138g of H2O. What is the formula CxHY (what are x and y)? Balance the reaction equation. Any help at all is ...
April 1, 2014 by Susan

I need to know how to dilute a 1L IV bag of 0.45% NaCl with 3.5% NaCl water to make it a drinkable 0.9% NaCl
December 9, 2009 by Emma

What happened if you put the Elodea leaf cells in a solution of 0.5% NaCl,1.8% NaCl and 0.9%NaCl?
July 23, 2011 by Ivy

chemistry solution preparations
how can we prepare 0.5 n solution of hcl as we have 37% hcl and 0.1n hcl. and we want to make 0.5n hcl from 0.1n hcl by pouring 37% hcl?
July 7, 2014 by asif

will a red blood cell undergo crenation, hemolysis, or no change in each of the following solutions? 1% (m/v) glucose 2% (m/v) NaCl 5% (m/v) NaCl .1% (m/v)NaCl
May 9, 2011 by Curlyqty

1.) For which of the following substances is the standard enthalpy of formation equal to zero? a) water [H2O(l)] d) carbon dioxide [CO2(g)] b) lead [Pb(l)] e) tin [Sn(s)] c) carbon dioxide [CO2(s)] 2.) Consider the following four equations: 1. C6H6(l) + O2(g) 6CO2(g) + 3H2O(l...
August 3, 2011 by tt

In an experiment liquid hexane, C6H14 (l) is combusted completely to produce CO2(g) and H2O (l) according to the equation: 2 C6H14 (l) + 19 O2(g) -> 12 CO2(g) + 14H2O (l) The change in H degrees for the reaction is -8.39 x 10^3 KJ. Calculate change in H degrees for C6H14 (l).
November 29, 2010 by vvvvvv

CH4 + 2O2 ---> CO2 + 2H2O Delta H H2O= -285.8 kJ/mole Delta H CO2= -393.3 kJ/mole What is the standard heat of formation of methane, Delta H CH4, as calculated from the data above
November 18, 2011 by kc

Ethanol, C2H5OH or C2H6O, is mixed with gasoline and sold as gasohol. Given the following thermo-chemical reaction, calculate the kilograms (kg) of CO2 produced when enough ethanol is combusted to provide (or give off) 369 kJ of heat: C2H5OH (l) + 3 O2 (g) --> 2 CO2 (g) +3 ...
July 12, 2011 by Robert

Which of the following is an acidic oxide? a. ) NO2 b. ) H2O c. ) K2O d. ) NaCl e. ) Ca(OH)2
November 2, 2008 by Anonymous

what is molality of solution . in which Nacl and H2o have equal moles.
May 30, 2010 by shubham

if 125 ml of H2O is added to 50 ml of 0.35 M NaCl, what is the molarity of the resulting solution?
October 19, 2010 by Dana

a mixture of methane and ethane is stored in a container at 294 mmHg. The gases are burned in air to form co2 and h2o. if the pressure of co2 is 357 mmhg measured at the same temperature and volume as the original mixture, calculate the mole fraction of the gases.
December 4, 2010 by maggie

A mass of 0.630 g of NaCl is dissolved in 525 g of water. CAlculate the molality. mass of NaCl= 0.630g mass of H20= 525g molar mass of NaCl= 58.44 This is what i did it keeps telling me the answer is wrong. Convert grams to moles of NaCl 0.630 * 1 mol NaCl/58.44= 0.01078 ...
May 21, 2009 by Saira

The equivalent weights of X and Y are _________ g/equiv. H+ and g/equiv. OH, respectively, for the following reaction: Z (Note: Report your answer with 4 significant figures.) X Y Z Answer #1 Answer #2 benzoic acid calcium hydroxide 2 C6H5COOH + Ca(OH)2 2 H2O +Ca(C6H5COO)2 ...
October 22, 2011 by Evani

Sodium carbonate reacts with nitric acid according to the following equation: Na2CO3+2HNO3-->2NaNO3+CO2+H2O a. how many moles of Na2CO3 are required to produce 100.0 g of NaNO3? b. if 7.50g of Na2CO3 reacts, how many moles of CO2 are produced?
May 28, 2012 by Kay

Performing a gravimetric analysis of Ca2+. 25 mL of unknown [Ca2+} added to 25 mL of 0.15 (NH4)2C2O4 and 75 mL of HCl. Urea also added. H2NCONH2 + 3H2O --heat→ CO2 + 2NH4 + 2OH CaC2O4*H2O --> Ca2+ + C2O42- [Ca2+]unknown=0.06028 M <--0.0015433 moles of Ca2+/0.025 L ...
March 25, 2013 by Anonymous

.1 M HCl + .1 M NaCl .1 M HF + .1 M NaF .1 M HBr + .1 M NaBr Which of the above would be considered buffers?
April 22, 2008 by Confused

What are the different physical properties between HCl and NaCl? And explain the causes of their differences? THANKS
September 22, 2009 by Adam

What are the different physical properties between HCl and NaCl? And explain the causes of their differences?
September 22, 2009 by Adam

What are the different physical properties between HCl and NaCl? And explain the causes of their differences?
September 24, 2009 by Adam

What type of chemical reaction is this? Is it double displacement? Thank you! HCL + NaOH H20 + NaCl
December 6, 2011 by mickey

Long question but its my last one for homework and im stuck on this word problem. Biomass is represented by the empirical formula C60H87O23N12P. Write a balance equation for the oxidation of C60H87O23N12P with O2 to form CO2, H2O, HNO3, and H3PO4 beginning with 1000g of ...
May 4, 2014 by Samantha

Choose the member of each set that you would expect to be more soluble in water. Explain your answer. Chloroform, CH3Cl, or hydrogen chloride. My gut instinct was HCl, however I'm not sure why [or if] it's more soluble than CH3Cl. Of course HCl is more soluble in water than ...
March 20, 2007 by Tasha

a compound was analyzed and found to contain C,H,N,O, and Cl. When o.150g sample of this compound was burned, it produced 0.138 g of CO2 and 0.0566 g of H2O. All of the Nitrogen in another sample of mass 0.200 g was converted to 0.0238 g of NH3. Finally, the chlorine in a 0....
November 13, 2011 by Arnol

Mg + HCl ----> MgCl2 + H2 If the water in tube is evaporated , the other product , a white salt remains . Write the balanced chemical equation . Ans: Mg + HCl ----> MgCl2 + H2 + H2O I don't know how to balanced it . I'm confusing where O is in reactants to balanced. ...
February 27, 2013 by Maria

Consider the exothermic reaction CoCl42-(aq) + 6 H2O(l) Co(H2O)62+(aq) + 4 Cl -(aq). Will the equilibrium concentration of CoCl42- increase or decrease when the following changes occur? a) HCl is added. (b) Co(NO3)2 is added. both of those compounds are not even in the ...
April 19, 2011 by Robbin

a solution is made by dissolving 117 g of nacl in 585 g of h2o. what is its molarity
June 12, 2013 by hello

carbon dioxide (CO2) is the gas mainly responsible for global warming (the greenhouse effect). the burning of fossil fuels is a major cause of the increased concentration of CO2 in the atmosphere. carbon dioxide is also the end product of metabolism. a general overall equation...
June 13, 2011 by Lauren

When 50.0mL of 1.20 M of HCl (aq)is combined with 50.0mL of 1.30 M of NaOH (aq) in a coffee-cup calorimeter, the temperature of the solution increases by 8.01 Degrees C. What is the change in enthalpy for this balanced reaction? HCl(aq) + NaOH(aq) --yields-- NaCl(aq) + H20(l) ...
November 14, 2012 by marcus

The average human requires 120.0 grams of glucose (C6H12O6) per day. How many grams of CO2 ( in the photosynthesis reaction) are required for this amount of glucose? The photosynthetic reaction is: 6 CO2 + 6 H2O = C6H12O6 + 6 O2
January 19, 2011 by Artie

I am having such a hard time approaching this problem. It would be great if you can help me. 1.0 mole of CH4 react with 1.0 mole of O2 in a sealed container. (a) When the reaction is complete, what is the container? (b) How many moles of water are produced? CH4 + 2O2 ---> ...
October 15, 2012 by Lana

I am having such a hard time approaching this problem. It would be great if you can help me. 1.0 mole of CH4 react with 1.0 mole of O2 in a sealed container. (a) When the reaction is complete, what is the container? (b) How many moles of water are produced? CH4 + 2O2 ---> ...
October 15, 2012 by Lana

When CO2(g) (0.009242 mol/L) and 0.009242 mol/L of H2(g) in a 460.0 L reaction vessel at 619.0 C are allowed to come to equilibrium the mixture contains 1.327 mol of CO(g). What is the equilibrium concentration (mol/L) of H2(g)? CO2(g)+H2(g) = CO(g)+H2O(g)
October 4, 2013 by plzprovidetheanswer

C3H6O + 4 O2 3 CO2 + 3 H2O how many coefficients?
October 11, 2011 by Anonymous

Balance C3H6 + O2 > H2O + CO2
October 11, 2012 by Stacy

The pH of arterial blood is 7.42. When 10 mL of the blood is acidified, 5.91 mL of CO2 is produced. 1) what is the total concentration of CO2 in the blood [CO2]+[HCO3-]? The experimental value for the volume of one mole of CO2 is 22.26 L/mol. 2) What are the individual ...
October 11, 2009 by Andrew

Solid urea, (NH2)2CO, burns to give CO2,N2, and liquid H2O. Its heat of combustion is -632.2 kJ/mol. Balance the equation for combustion of urea, and calculate the heat generated per mole of H2O formed. (Enter in kJ.)
October 23, 2014 by Martin

Solid urea, (NH2)2CO, burns to give CO2,N2, and liquid H2O. Its heat of combustion is -632.2 kJ/mol. Balance the equation for combustion of urea, and calculate the heat generated per mole of H2O formed. (Enter in kJ.)
October 23, 2014 by Kales

Physical Science Please Help!
Table salt, sodium chloride, has the formula NaCl. A weight of 58.44 grams of table salt contains 1.0 mole of NaCl molecules. How many moles of NaCl are contained in 29.22 grams of NaCl?
February 5, 2013 by Dawn

How can you tell that CO2 has a dipole moment while O2, N2, and HCL does not?
October 30, 2013 by Zoe

Balance the equation and answer in terms of moles. Chlorine gas can be produced commercially by passing an electric current through a con-centrated solution of sodium chloride (brine). The unbalanced equation is NaCl(aq) + H2O(`) ! NaOH(aq) + Cl2(g) + H2(g) . If the brine ...
February 15, 2012 by jack

Which of the following mixtures will result in the formation of a buffer solution when dissolved in 1.00 L of water? i) 0.50 mol NaOH and 0.50 mol HCl. ii) 0.50 mol NaCl and 0.25 mol HCl. iii) 0.50 mol NaF and 0.25 mol HF. iv) 0.50 mol NaOH and 0.25 mol HF. v) 0.25 mol NaOH ...
July 23, 2010 by B

Chem 151
A CaCO3 mixture weighing 2.75 grams was treated with 9.75 mL of 3.00 M HCl to liberate CO2. After the CO2 was liberated, the mass of the mixture decreased to 2.621 grams. Determine the mass of CaCO3 present in the mixture.
March 21, 2013 by Double checking ans

For the equilibrium reaction: CO(g)+H2O(g)<=>CO2(g)+H2(g) the Keq value at 690C is 10.0. A mixture of 0.300 mol of CO, 0.300 mol of H2O, 0.500 mol of CO2 and 0.500 mol of H2 is placed in a 1.0 L flask. a)Write the Keq expression for this reaction and use the ...
January 26, 2012 by ami

For the equilibrium reaction Co(g)+H2O(g)<=>CO2(g)+H2(g) the Keq value at 690C is 10.0. A mixture of 0.300 mol of CO, 0.300 mol of H2O, 0.500 mol of CO2 and 0.500 mol of H2 is placed in a 1.0 L flask. a) Write the Keq expression for this reaction and use the ...
January 27, 2012 by AMI

Could someone please walk me through step by step on how to do this. Propane (C3H8) burns in oxygen to produce carbon dioxide and water. C3H8(g) + 5 O2(g) 3 CO2(g) + 4 H2O(g) Calculate the mass of CO2 that can be produced if the reaction of 48.2 g propane and sufficient oxygen...
October 7, 2010 by Jennifer

In the reaction: MnO2 + 4 HCl ---> MnCl2 + Cl2 + 2 H2O Calculate: The volume of Cl2 produced from the reaction of 10 grams of HCl with excess MnO2?
December 13, 2010 by Darryl

balance the equation:C2H6 + O2 = CO2 + H2O
September 12, 2011 by christiana

Are the concentrations of CO, H2O, CO2 and H2 necessarily equal
April 16, 2012 by Heather

What is C2H5OH+3O2>CO2+H2O balanced?
November 28, 2012 by Bri

Urea (NH2CONH2), an important nitrogen fertilizer, is produced industrially by the reaction 2NH3(g)+ CO2(g)--> NH2CONH2(aq)+ H2O(l). Given that delta G = -13.6 kj/mol, calculate delta G at 25 degree C.for the following condition. 40 atm NH3 , 40 atm CO2 , 2.0 M NH2CONH2 I ...
February 26, 2010 by Anonymous

Chemistry 1
Sodium carbonate reacts with a solution of HCl solution with the evolution of gas (CO2) to yield a solution that is neutral. If 0.265 grams of sodium carbonate are required to neutralize 1.00 mL of HCl solution, what mass (in grams) of sodium carbonate will be required to ...
February 5, 2010 by Kay

I titrated 0.25 grams of soda ash with 43.7 mL of HCl (0.115M) and 25 mL of H2O. I am getting over 100% sodium carbonate in my answer here are my steps that I took to get the answer can somebody help me see what I did wrong? mols HCl=(0.115M)x (0.0437L)=0.005 mol HCl 1/2 x (0....
October 22, 2012 by Josh

chem, balance
Gaseous CO2 decomposes to form the gases CO and O2. Will it be CO2--> CO+O2 or CO+O2-->CO2? I know the solution above isn't balanced yet. I just have add the 2 behind CO2 and CO to make it balanced.
March 1, 2009 by Anonymous

Chemistry (Equilibrium)
Consider the following equilibrium system at 900C: H20(g) + CO(g) <==> H2(g) + CO2(g) Initially 5.0 moles of H2O and 4.0 moles of CO were reacted. At equilibrium, it is found that 2.0 moles of H2 are present. How many moles of H2O remain in the mixture? Would be greatly...
November 12, 2014 by Jessica

Hi please help with this. You will mix 5 ml of each 2M HCL and 2M NaOH solutions, calculate the concentration of NaCl formed in the new solution?
October 17, 2010 by John

Chemistry II
Arrange the following 0.10M solutions in order of increasing pH: a. Nacl b. NH4CL C. HCL D. NaCH3CO2 e. KOH
April 30, 2013 by Liz

Chemistry+Balancing equations
Aqueous magnesium hydroxide has been used for many uears because it reacts with HCL to produce magnesium chloride So far I got Mg(pos. 2 charge)OH2(-1 charge) + HCL >>>>>>> Mg(+2 charge)Cl2(-1 charge) + H2O did i get that rite?
February 3, 2009 by Chopsticks

Gasahol is a fuel containing ethanol(C2H6O) that burns in oxygen (O2)to give carbon dioxide and water. a)How many moles of O2 are needed to completely react with 4.0 moles of C2H60? b) If a car produces 88g of CO2,how many grams of O2 are used up in the reaction? c)If you add ...
March 17, 2011 by Connie

My teacher showed us these examples in class, he says he need to be able to know when something is soluble in something else but i have no idea how to know. anyone have any rules on how to know? This is the examples he gave us: is CsI soluble in H2O? yes is CH3OH soluble in ...
September 19, 2010 by Jessie

Chemistry Help Please!!!
Find Net Ionic equation for hydrolysis , Expression for equilibrium constant (Ka or Kb) and Value of (Ka or Kb) Net Ionic equations I've got NaC2H3O2 == CH3COO^-+H2O -->CH3COOH+OH^- Na2CO3 ==== CO3 + 2H2O → H2CO3 + 2-OH Kb = [H2CO3] [-OH]2 / [CO3]. Kb = 1/Ka1Ka2 = 7....
April 3, 2014 by Ahmed

what is the mass of two moles of NaCl? You look up the exact numbers on the periodic table or some other chart. I will use approximations. 1 mol NaCl = 1 Na + 1 Cl = 23 + 35.5 = 58.5 grams. 1 mols NaCl, then, is 2 x 58.5 = ?? g.
February 5, 2007 by Dennis

Chemistry (please help me!)
H2(g) + CO2(g)<-> H20(g) + CO(g) When H2(g) is mixed with CO2(g) at 2,000K, equilibrium is achieved according to the equation above. In one experiment, the following equilibrium concentrations were measured: [H2]=0.20 M [CO2]=0.30 M [H2O]=[CO]=0.55M a) What is the mole ...
February 25, 2007 by sara

I have a certain concentration of NaCl (in mg/L). I have to convert it to ppm Na+. I read some of the previous posts, and I understand that if I don't know the density, I should assume that 1ppm = 1mg/L. Does this also apply to ppm Na+ since there is 1 Na+ ion for each ...
February 20, 2007 by Maggie

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>