# I was asked to consider the solubility for hydrated calcium sulfate in HCl. The principal acid my proffesor had posted for the solution was [ CaSO4(hyrdrated) + HCl H30^+ + Ca^2+ + SO4^2- ]. I guess what I'm asking is

20,615 questions
1. ## Chemistry

I was asked to consider the solubility for hydrated calcium sulfate in HCl. The principal acid my proffesor had posted for the solution was [ CaSO4(hyrdrated) + HCl H30^+ + Ca^2+ + SO4^2- ]. I guess what I'm asking is what happened to the Cl^- and why

asked by john peterson on June 17, 2007
2. ## chemistry

A 1.994 g sample of gypsum, a hydrated salt of calcium sulfate, CaSO4, is heated at a temp. above 170 C in a crucible until a constant mass is reached. The mass of anhydrous CaSO4 is 1.577g. what is percent by mas of water in the hydrated calcium sulfate

asked by neha on February 9, 2010
3. ## Chemistry

A 1.994-g sample of gypsum, a hydrated salt of calcium sulfate, CaSO_4_, is heated at a temperture greater than 170 degrees C in a crucible until a constant mass is reached. The mass of the anhydrous CaSO_4_ salt is 1.577g. What is the mass percent of

asked by Karen on October 4, 2010
4. ## chimistry

What is the solubility of calcium sulfate (CaSO4) in 0.30 M aqueous sodium sulfate (Na2SO4)? (Ksp of calcium sulfate = 2.0 10–5 M) 1.7 10–5 M 6.7 10–5 M 1.4 10–3 M 1.5 10–3 M

asked by ormond on January 28, 2017

A 1.994 g sample of gypsum, a hydrated salt of calcium sulfate, CaSO4, is heated at a temp. above 170 C in a crucible until a constant mass is reached. The mass of anhydrous CaSO4 salt is 1.577 g. Calculate the percent by mass of water in the hydrated

asked by Sarah on November 21, 2008
6. ## Chemistry

Hydrated calcium sulfate contains 55.8% sulfate by mass. Calculate the value for "n".

asked by Sia on October 27, 2010
7. ## Chemistry

A 2.914 gram sample of gypsum, a hydrated salt of calcium sulfat, CaSO4, is heated at a temperature greater than 170 degrees Celcius in a crucible until a constant mass is reached. The mass of the anhydrous CaSO4 salt is 2.304 grams. Calculate the percent

asked by Sara on September 24, 2012
8. ## Chemistry

Hi, I have a few chemistry problems that I'm having trouble solving. I put my attempted solutions after the problems in *'s. There was one problem I had no idea how to solve. What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve to make a

asked by Maggie on April 12, 2010
9. ## chemistry

Calculate the solubility of calcium sulfate 0.010 mol/L calcium nitrate at SATP

asked by Ross on April 7, 2008
10. ## chemistry

Calculate the solubility of calcium sulfate in 0.010 mol/L calcium nitrate at SATP

asked by Lawrence94 on April 3, 2008
11. ## chemistry

A 0.500 L solution of 7.50 M hydrochloric acid is used to neutralize a 250.0 g sample of calcium hydroxide. Calcium chloride – a chemical used to control highway dust, strengthen concrete mixes, and add flavor to foods – is produced by the reaction. 2

asked by BT on March 1, 2010

A saturated solution of CaSO4(aq) is made in a beaker until there is excess calcium sulfate resting at the bottom. Then solid potassium sulfate is added. Which of the following is true? (The Ksp for potassium sulfate is larger than the Ksp for calcium

asked by Maggie on April 12, 2010
13. ## Chemistry

3.05 g of hydrated copper sulfate produce 1.94 g of anhydrous salt. Assuming complete removal of water of crystallisation, determine the formula of hydrated copper sulfate.

asked by Melissa on March 11, 2015
14. ## Chemistry

This is a three part problem I need help in figuring out pleaseI n each of the questions below you are going to determine a different type of balanced equation for the same reaction. Make sure your equations have the lowest whole number coefficients

asked by Melinda on October 10, 2012
15. ## Chemistry

This is a three part problem I need help in figuring out pleaseI n each of the questions below you are going to determine a different type of balanced equation for the same reaction. Make sure your equations have the lowest whole number coefficients

asked by Melinda on October 10, 2012
16. ## chemistry

3.05 g hydrated copper sulfate produces 1.94 g of anhydrous salt.Assuming complete removal of all water of crystallisation,determine tha formula of hydrated copper sulfate.

asked by Joe on March 2, 2017
17. ## chemistry

Please calculate the solubility of calcium sulfate in 0.010 mol/L calcium nitrate at SATP. This very question has been bugging me all weekend. Can some one please solve this quesiton it would really be appreciated.

asked by Marcus on March 30, 2008
18. ## AP Chem

Consider the following unbalanced equation: Ca3(Po4)2+H2SO-->CaSO4+H3PO What masses of calcium sulfate and phosphoric acid can be produced from the reaction of 1.0 kg calcium phosphate with 1.0 kg concentrated sulfuric acid (98% H2SO4 by mass)? I'm so

asked by Robyn on November 4, 2008
19. ## Chemistry

Ca3(PO4)2 + 3 H2SO4 -> 3 CaSO4 + 2 H3PO4 What masses of calcium sulfate and phosphoric acid can be produced from the reaction of 1.0 kg calcium phosphate with 1.0 kg concentrated sulfuric acid (98% H2SO4 by mass)?

asked by Anonymous on August 16, 2010
20. ## Chemistry

How many grams of calcium carbonate, CaCO3, do you need in an antacid tablet to neutralize 20 mL of stomach acid? (stomach acid is 0.1 M HCl. There are 3.65g of HCl in 1L of stomach acid or 1g of HCl in 274g of stomach acid).

asked by Marie on November 13, 2012
21. ## chemistry

Limestone rock contains solid calcium carbonate that can react with acid to give products. In one experiment, 1.452 g of limestone rock is pulverised and then treated with 25.00 mL of 1.035 M HCl solution. After the reaction is completed, the resulting

asked by Anonymous on February 12, 2016
22. ## Chemistry

i need help on a lab here are the results Mass of empty beaker and glass rod(62.62) Mass of beaker, glass rod, hydrated copper sulfate(66.02) Mass of beaker, glass rod and anhydrous copper sulfate(65.04) Mass of hydrated copper sulfate(3.4) Mass of

asked by MINNIE on December 1, 2014

need help on a lab here are the results Mass of empty beaker and glass rod(62.62) Mass of beaker, glass rod, hydrated copper sulfate(66.02) Mass of beaker, glass rod and anhydrous copper sulfate(65.04) Mass of hydrated copper sulfate(3.4) Mass of anhydrous

asked by Katherine on December 1, 2014
24. ## Chemistry

I need some help with writing reactions. I have the following to write out: a. the hydration of copper sulfate b. the reaction of liquid sulfuric acid to form aqueous sulfuric acid c. the reaction of calcium oxide w/ water to form calcium hydroxide For a,

asked by Nikki on October 4, 2009
25. ## Chem

The solubility of calcium sulfate is1.90g of caso4 per liter of aquences solution at 25c. The formula weight of caso4 is 136.11 calculate the solubility product of caso4.

asked by Kim on November 17, 2015
26. ## chemistry

you made up a standard solution of calcium sulfate (CaSO4). the temperature is 25C. you then add 5.00*10^-3 odium sulfate (Na2SO4). Calculate the concentrations of calcium and sulfate after equilibrium is reached? The pKs of CaSO4 is 4.58.

asked by Maria on January 15, 2011
27. ## chemistry

Calcium carbonate reacts with hydrochloric acid according to the following reaction: CaCO3 (s) + 2 HCl (aq) --> CaCl2 (aq) + H2O (l) + CO2 (g) How many grams of calcium carbonate would be required to neutralize 50.0 cm3 of 8.00 M HCl?

asked by Christina on November 7, 2010
28. ## Chem

In some solid calcium carbonate samples, calcium bicarbonate Ca(HCO3)2. Write a balanced equation for its reaction with hydrochloric acid. CaCO3 + HCL= Ca^2+ (aq) + HCL + Ca(HCO3)2 I don't know if I have written the reactions and products correctly?

asked by Feather on October 15, 2014
29. ## Chem

You made up a saturated solution of calcium sulfate (CaSO4). The temp is 25 degrees Celsius. You then add 5.00*10^-3 of sodium sulfate (NaSO4). What are the concentrations of calcium and sulfate after equilibrium is reached? The pKs of CaSO4 is 4.58. I

asked by Mig on June 5, 2011
30. ## chemistry

Calcium carbonate and sulfuric acid react according to the balanced reaction. CaCO3+ H2SO4 = CaSO4 + CO2 + H2O Starting from 300 grams of calcium carbonate with 3% impurities, what is the mass of calcium sulfate formed considering that the reaction is 90%

asked by wallace on August 20, 2018
31. ## Chemistry

The solubility of calcium sulfate at 30 degrees C is .209 g/100mL solution. calculate its Ksp.

asked by Al on November 29, 2010
32. ## Chemistry

I have to sort compounds into groups, separating them by if they are acidic, Ionic, or Covalent. Heres the list: Calcium Carbonate Sodium Hypochlorite Sodium Chloride Sodium Hydrogen Carbonate Acetic Acid Ammonium Hydroxide Silicon dioxide Magnesium

asked by Kaylee on December 10, 2012
33. ## Chemistry

The maximum solubility of silver sulfate, Ag2SO4 [molar mass = 312], is 4.50 g/L at 25°C. Silver sulfate dissociates by the reaction below: Ag2SO4(s) 2 Ag+ (aq)+ SO4¯² (aq) 1.What are the [Ag+] and [SO4¯²] in a saturated solution of silver sulfate

asked by Paul on March 20, 2011
34. ## CHEMISTRY

The solubility of barium sulfate varies with the composition of the solvent. In which one of the solvent mixtures below would BaSO4 have the lowest solubility? i)1.0 M (NH4)2SO4(aq), ii) 0.10 M Na2SO4(aq), iii) pure water, iv) 1.0 M HCl(aq) v) 0.5 M

asked by Anonymous on December 7, 2017
35. ## Chem-Stoich

A 1.605g sample of dry calcium carbonate and calcium chloride mixture was dissolved in 35.00mL of 1.000mol-dm-3 hydrochloric acid solution. The only portion of the mixture that reacts with the hydrochloric acid solution is the calcium carbonate. What was

asked by :) on January 7, 2015
36. ## science

1. what weight in grams of magnesium oxide will produce from burning 96 grams of magnesium? 2. a solution containing 252g of calcium sulfate will produce from 165lbs of phosphate rocks containing 82.5 % pure calcium phosphate treated with sulfuric acid? 3.

asked by josh on August 28, 2011
37. ## chemistry

calcium hydroxide reacts in a neutralization reaction with sulfuric acid in a 1:1 ratio to form water and calcium sulfate. if you have 23.5 grams of calcium hydroxide, how many milliliters of water can you form? how do i use dimensional analysis to solve

asked by lyne on December 12, 2008
38. ## Chemistry

Explain why the solubility of PbF2 is pH dependent, but the solubility of PbCl2 is not. I know the solubility of PbF2 is pH dependent because the solubility would increase as the solution becomes more acidic because the F^- ion is the conjugate weak base

asked by Robin on April 11, 2016
39. ## chemistry

3.05 g of hydrated copper sulphate produces 1.94g of anhydrous salt.assuming complete removal of all water of crystallization,determine the formula of hydrated copper sulfate

asked by maria on March 1, 2016
40. ## Chemistry

Hello! I am having a little difficulty answering these two questions on my homework, I was wondering if anyone could please help me out! Thank you! 1) Consider the following balanced chemical equation for the neutralization reaction of calcium hydroxide

asked by T.C. on November 30, 2013
41. ## Chemistry

The solubility of calcium sulfate at 30 degrees C is .209 g/100mL solution. Calculate its Ksp i calculated it and got 1.5 x 10 ^-2 but the program said that it was wrong if you could help explain how to do it i would appreciate it

asked by Joe on November 30, 2010
42. ## Chemistry

The solubility of calcium sulfate at 30 degrees C is .209 g/100mL solution. Calculate its Ksp i calculated it and got 1.5 x 10 ^-2 but the program said that it was wrong if you could help explain how to do it i would appreciate it

asked by Joe on November 30, 2010
43. ## Chemistry

When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced. CaCO3 + 2HCl -> CaCl2 + H2O + CO2 How many grams of calcium chloride will be produced when 27.0 g of calcium carbonate are combined with 14.0 g

asked by Anonymous on October 3, 2012
44. ## AP Chemistry

The question asked... Calculate the solubility of calcium sulfate in grams solute per 100 grams solvent. Assume that the volume occupied by the solute in the solution in negligibly small. I solved and got 4.9 x 10 ^-3 mol/L... how do I put this in grams

asked by Allie on April 21, 2010
45. ## chemistry

what is the solubility of barium sulfate in a solution containing 0.050 M sodium selfate? The Ksp value for barium sulfate is 1.1E-10. An insoluble salt with formula MX3 has a solubility product constant written in terms of solubility,s, in the form a)

asked by Sarah (C) on April 23, 2011
46. ## chemistry

the Ksp for CaF2 is 3.9*10-11. assuming that calcium flouride dissociates completely upon dissolving and that there are no other important equilibria affecting the solubility, calculate the solubility in pure water, of calcium floride in m/L and in g/L

asked by anon on October 10, 2010
47. ## LAB!!!!!

can someone check this for me???? Thanks I really appreciate it!!!!! Calcium Chloride Melting Point: 772 °C (anhydrous) Solubility (water): highly soluble in water Solubility (Ethanol): Soluble Conductivity: ATC mode: 183.25 Citric Acid Melting Point: 153

asked by Hodgkin on June 19, 2006
48. ## Chemistry

A 2.914-g sample of gypsum, a hydrated salt of calcium sulphate, CaSO4, is heated at a temperature greater than 170 °C in a crucible until a constant mass is reached. The mass of the anhydrous CaSO4 salt is 2.304 g. Calculate the % by mass of water in the

asked by Destiny on February 19, 2019
49. ## Chemistry

Calcium carbonate reacts with HCl according to the following equation: 2HCl(aq)+CaCO3(s)→CaCl2(aq)+H2O(l)+CO2(g) How many moles of HCl are in 58 mL of 0.13 M HCl? What mass of calcium carbonate is needed for complete reaction with the HCl in (a)?

asked by hbl on December 5, 2016
50. ## Chemistry

1. Calcium carbonate reacts with HCl according to the following equation: 2HCl(aq)+CaCO3(s)→CaCl2(aq)+H2O(l)+CO2(g) How many moles of HCl are in 65 mL of 0.15 M HCl? 2. What mass of calcium carbonate is needed for complete reaction with the HCl in (a)?

asked by Dhan Rai on April 17, 2018
51. ## chemistry

In hydrated copper sulfate, the chemical formula is CuSO4.5H2O, while that of hydrated cobalt(II) chloride is CoCl2.6H2O. I want to ask how to determine the number of moles of water is needed to hydrate any salt. Is there a pattern or formula?

asked by Hao on November 8, 2013
52. ## Chemistry

We did a titration of calcium hydroxide lab in chemistry, once with and once with edta, we have to calculate the solubility for both, and the ksp, for the hcl I did (concentration)*(Volume of hcl used) then that answer divided by two divided by the amount

asked by Dan on March 14, 2016
53. ## chemistry

The addition of a dilute hydrobromic acid would clearly distinguish solutions of a. barium nitrate and sodium sulfate b. lead nitrate and silver nitrate c. mercury(I) nitrate and silver nitrate d. silver nitrate and calcium sulfate e. calcium nitrate and

asked by Joe on December 18, 2009
54. ## chemistry

Write the molecular,complete ionic, and net ionic equations for the reactions that occur, if any, when solutions of the following substances are mixed: a) nitric acid and potassium carbonate b) sodium bromide and lead nitrate c) acetic acid and calcium

asked by Lyndsay on November 19, 2015
55. ## chemistry

if 2.0 grams of sodium sulfate are mixed with 2.0 grams of calcium chloride to produce calcium sulfate as a precipitate, which compound is the limiting reactant

asked by Anonymous on October 19, 2013
56. ## holy school

CaCO3 + H2 SO4 ------> CaSO4 + CO2 + H2 O 200 g of calcium carbonate are added to 4 L of water. a. What is the molarity of the calcium carbonate solution? b. How many moles of hydrogen sulfate would be needed to react with a 25 mL sample of the calcium

asked by mamta on March 3, 2013
57. ## Chemistry

1.654 of a hydrated acid H2C2O4.xH2O was dissolved in water and the soultion was made up to 250cm3 . 23.80cm3 of this solution required 25.00cm3 of 0.100moldm-3 NaOH to reach the end point. Identify the value of x and the formula of the hydrated acid

asked by Jemma on November 21, 2016
58. ## chemistry quick help!

In the balanced double replacement reaction of calcium chloride CaCl2 and aluminum sulfate Al2(SO4)3, how many grams of calcium sulfate can be produced if you start the reaction with 4.19 grams of calcium chloride and the reaction goes to completion?

59. ## Chem hwk

In the balanced double replacement reaction of calcium chloride CaCl2 and aluminum sulfate Al2(SO4)3, how many grams of calcium sulfate can be produced if you start the reaction with 18.97 grams of calcium chloride and the reaction goes to completion?

60. ## Chemistry (urgent)

Hi, I have a few chemistry problems that I'm having trouble solving. I put my attempted solutions after the problems in *'s. There was one problem I had no idea how to solve. What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve to make a

asked by Maggie on April 12, 2010
61. ## CHEMISTRY

the correct name for the compound with the formula CaS04 IS A.]CALCIUM SULFUR OXIDE B.]CALCIUM SULFIDE C.}CALCIUM SULFATE D.}CALCIUM SULFUR TETROXIDE I will be happy to critique your thinking on this.

asked by Darius Graham on January 12, 2007
62. ## chemistry

Hi Cna someone please tell me what I must out into the Trial 1 column? It would be greatly appreciated. theLab: Determining the Ksp For Ca(OH)2 Purpose: The purpose of this experiment is to determine the Ksp for calcium hydroxide. Experimental Design: A

asked by Jessica on April 1, 2008
63. ## science

Can you help me balance some equations? I tried and failed several times... 1. calcium hydroxide + phosphoric acid yield calcium phosphate + water 2. copper + sulfuric acid yield copper(II) Sulfate + water + sulfur dioxide 3. hydrogen + nitrogen monoxide

asked by Jessi on November 10, 2009
64. ## chemistry

Purpose: The purpose of this experiment is to determine the Ksp for calcium hydroxide. Materials are: *50.0 mL of 0.10 M HCl(aq) *bromophenol blue indicator *50.0 mLsaturated calcium hydroxide *50.0 mL buret *125 mL Erlynmyer Flask *50.0 mL of distilled

asked by Tim's Titration Lab on April 4, 2008
65. ## Chemistry

Why wouldn't HCl be a good acid to use to determine the solubility of a silver precipitate in acid solution?

asked by Nicole on April 12, 2011
66. ## chemistry

why wouldn't HCl be a good acid to use to determine the solubility of a silver precipitate in acid soulution?

asked by Frank on November 8, 2015
67. ## chemistry

Let me repost the important information only: Purpose: The purpose of this experiment is to determine the Ksp for calcium hydroxide. Materials are: *50.0 mL of 0.10 M HCl(aq) *bromophenol blue indicator *50.0 mLsaturated calcium hydroxide *50.0 mL buret

asked by Jessica on April 1, 2008
68. ## science - chemistry

The relative molecular mass of calcium carbonate (CaCO3) is 100. What is the minimum volume of 2.0 M hydrochloric acid (HCl) that would be needed to completely react with 2.0 g of calcium carbonate?

asked by scienceguy on July 11, 2017
69. ## Chemistry

Aluminum sulfate reacts with calcium hydroxide (from lime) to form aluminum hydroxide and calcium sulfate. Write the balanced formula unit equation for the reaction.

asked by Ana on September 28, 2014
70. ## chemistry

Calculate the xolubility of calcium sulfate in 0.010 mol/L calcium nitrate at SATP CaSO4 ==> Ca^+2 + SO4^= Ca(NO2)2 ==> Ca^+2 + 2NO3^- = 0.01 M Ksp CaSO4 = (Ca^+2)(SO4^=) = ??. Look up Ksp for CaSO4. Subsitute 0.01 for Ca^+2 and x for SO4^= and solve for

asked by Dustin on April 8, 2008
71. ## Chemistry

Back again with another problem :) How do you calculate the enthalpy change, in kJ/mol for the reaction of copper(II) sulfate? 0.0210 mol of copper sulfate was added to 25 cm3 of water. The temperature increased by 14°C. The specific heat capacity of

asked by Autumn on October 24, 2017
72. ## Chem

If 1.5g of calcium sulfate dihydrate decomposed to a monohydrate what is the theoretical yield of the calcium sulfate monohydrate be?

asked by Monet on June 16, 2018
73. ## chemistry

A coal burning plant that burns 4 metric tons of coal containing 2% sulfur (S) requires 1 metric ton of wet limestone (calcium carbonate) to remove 90% of the sulfur. The process prevents most of the sulfur from being emitted as sulfur dioxide to the air

asked by emily on October 19, 2010
74. ## chemistry

A coal burning plant that burns 4 metric tons of coal containing 2% sulfur (S) requires 1 metric ton of wet limestone (calcium carbonate) to remove 90% of the sulfur. The process prevents most of the sulfur from being emitted as sulfur dioxide to the air

asked by emily on October 19, 2010
75. ## Chemistry

In studying the chemistry and qualitative analysis of anions, why wouldn't HCl be a good acid to use to determine the solubility of a silver precipitate in acid solution?

asked by Matt on April 29, 2010
76. ## chemistry

A coal burning plant that burns 4 metric tons of coal containing 2% sulfur (S) requires 1 metric ton of wet limestone (calcium carbonate) to remove 90% of the sulfur. The process prevents most of the sulfur from being emitted as sulfur dioxide to the air

asked by emily on October 20, 2010
77. ## chemistry

A coal burning plant that burns 4 metric tons of coal containing 2% sulfur (S) requires 1 metric ton of wet limestone (calcium carbonate) to remove 90% of the sulfur. The process prevents most of the sulfur from being emitted as sulfur dioxide to the air

asked by emily on October 20, 2010
78. ## chemistry

Can someone give me some directions as to how to reach the answer for this problem: A 0.608g sample of fertilizer contained nitrogen as ammonium sulfate, (NH4)2 SO4(s)+2NaOH(aq)-->Na2SO4(aq)+ 2H2O(l)+2NH3(g) The ammonia was collected in 46.3 mL of 0.213 M

asked by Chemically Confused on June 11, 2009
79. ## Aqueous Stoichiometry

Can someone give me some directions as to how to reach the answer for this problem: A 0.608g sample of fertilizer contained nitrogen as ammonium sulfate, (NH4)2 SO4(s)+2NaOH(aq)-->Na2SO4(aq)+ 2H2O(l)+2NH3(g) The ammonia was collected in 46.3 mL of 0.213 M

asked by Chemically Confused on June 11, 2009
80. ## chemistry

This is from a "effect of pH on the solubility of Ca(OH)2" lab: If excess Ca(NO3)2 were present, what effect would it have on the solubility of Ca9OH)2? also, in a "effect of comlex ion formaiton on the solubility of NiCO3" lab": If HCl(aq) were added to

asked by redgy on March 27, 2011
81. ## chemistry

Barium sulfate is listed as insoluble on solubility tables. It does, however, dissolve to a small extent. Its solubility at 50 'C is 0.00034g in 100. g of water. Express this solubility in parts per million -I know the equation is ppm= (grams of solute/L

asked by Emily on March 20, 2011
82. ## chemistry

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

asked by Evani on October 22, 2011
83. ## chemistry

If 2.0 Grams of anhydrous sodium sulfate are mixed with 2.0 grams of calcium chloride dihydrate and 2.0 grams of calcium sulfate dihydrate are collected, what is the percent yield? DO NOT ROUND A NUMBER IF USED IN A SUBSEQUENT CALCULATION

asked by Anonymous on October 21, 2013
84. ## Chemistry

Chalk is a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite. Calcite is calcium carbonate, CaCO3. It forms under relatively deep marine conditions from the gradual accumulation of minute calcite plates (coccoliths)

asked by Shell on May 19, 2011
85. ## CHEMISTRY

A 2.800-g mineral sample was analyzed for its calcium carbonate, CaCO3, content by titrating it with hydrochloric acid (the reaction products are calcium chloride, carbon dioxide, and water). The sample required 28.48 mL of a 0.1505 M HCl solution to react

asked by Anonymous on November 28, 2010
86. ## chemistry

Calcium carbonate CaCO3 reacts with stomach acid (HCl, hydrochloric acid) according to the following equation: CaCO3(s)+2HCl(aq)->CaCl2(aq)+H2O(l)+CO2(g) Tums, an antacid, contains CaCO3. If Tums is added to 35.0 mL of 0.300 M HCl,how many grams of CO2 gas

asked by Dana on October 8, 2010
87. ## Chemistry

Are these correct? 1. KBr: Potassium Bromide 2. Cu2O: Copper (I) Oxide 3. HCl: Hydrochloric Acid 4. N2O4: Dinitrogen Tetroxide 5. H3P: Hydrophosphoric Acid 6. FeS: Iron (II) Sulfide 7. Ag2SO4: Silver Sulfate 8. HNO2: Nitrous Acid 9. Pb(CO3)2: Lead (IV)

asked by Anonymous on January 12, 2011
88. ## Chemistry

A tablet containing calcium carbonate and fillers with a mass of 1.631 g was dissolved in HCl. After the fillers were filtered out, the HCl was neutralized by adding sodium carbonate. The resulting precipitate was pure calcium carbonate (with the fillers

asked by Sam on March 13, 2017
89. ## Chemistry (Acids and Bases)

The natural pH of rainwater is 5.6. The acidity of rainwater is caused by the dissolution of (TRUE OR FALSE) boric acid sulfuric acid carbonic acid calcium carbonate calcium oxide nitric acid

asked by Andy on March 20, 2011
90. ## chemistry

10. If the calcium oxide were obtained by the heating of calcium hydroxide, how much hydroxide would be needed to obtain the 15.0 g? 11. If the 15.0 g of calcium oxide in the above problems were allowed to react with water, what amount of calcium hydroxide

asked by greg on December 13, 2012
91. ## Chemistry

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

asked by Cristian on December 3, 2012
92. ## chemistry

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

asked by monique on November 15, 2011
93. ## Chemistry

Calcium nitrate forms two different hydrated salts. One contains 24.7 % water and the other 30.4 % water. What are the formulas for these two hydrated salts?

asked by John on January 18, 2011
94. ## Chemistry

When coal is burned, the sulfur it contains is converted into sulfur dioxide. This is SO2 is a serious pollutant, so it needs to be removed before it escapes from the stack of a coal fired plant. One way to remove the SO2 is to add limestone, which

asked by Marissa on November 15, 2016
95. ## chemistry

hi, i am trying to develop a lab where i find the solubility of Sodium acetate. I was wondering in i was in the right path. We are given these three compounds: Acetic acid aka vinegar baking soda (sodium hydrogen carbonate) 0.100mol/l Naoh(aq) 0.100/l

asked by chemistrybuddy on June 2, 2008
96. ## chemistrybuddy

hi, i am trying to develop a lab where i find the solubility of Sodium acetate. I was wondering in i was in the right path. We are given these three compounds: Acetic acid aka vinegar baking soda (sodium hydrogen carbonate) 0.100mol/l Naoh(aq) 0.100/l

asked by chemistrybuddy on June 2, 2008
97. ## organic chemistry

I need to design a method to separate a mixture of benzoic acid and caffeine based on the results of a solubility experiment I did and Im not sure where to start. Ok, I know that the caffeine acts as a base as it was soluble in HCL and the Benzoic acid is

asked by AMY on September 19, 2007
98. ## Chemistry

Calculate the solubility of calcium sulfate in grams solute per 100 grams of solvent. Assume that the volume occupied by the solute in the solution is negligibly small. (Ksp for CaSO4 = 2.4 X 10^-5)

asked by Boo on April 25, 2011
99. ## chemistry

3ca(s) + 2H3PO4(aq) -> Ca3(PO4)2(aq)+3H2(g) 1)a reaction between calcium and a solution of 1.2moldm-3 phosphoric acid produced 3 mol of H2 gas. a) Minimum volume of phosphoric acid would have been needed for reaction: I got 1.6cm3 b)Mass of calcium added

asked by 0ooooooooo0 on September 28, 2017
100. ## chemistry

What is the balance chemical equation for calcium sulfate and potassium phosphate to form potassium sulfate and calcium phosphate

asked by Anonymous on November 13, 2014