Friday
April 25, 2014

Search: Magnesium reacts with oxygen to form magnesium oxide. If 0.81 grams of magnesium oxide are formed, how many grams of oxygen reacted?

Number of results: 5,136

Chemistry
Oxygen gas and water are produced by the decomposition of hydrogen peroxide. If 10.0 mol of H2O2 decomposes, what volume of oxygen will be produced? Assume the density of oxygen is 1.429g/L. 2H2O2= 2H2O+O2
Tuesday, April 19, 2011 at 10:04pm by YV

chem
Oxygen gas and water are produced by the decomposition of hydrogen peroxide. If 10.0 mol of H2O2 decomposes, what volume of oxygen will be produced? Assume the density of oxygen is 1.429g/L. 2H2O2= 2H2O+O2
Sunday, February 3, 2013 at 5:36pm by oscar

chemistry
The mole fraction of an aqueous solution of magnesium chlorate is 0.371. Calculate the molarity (in mol/L) of the magnesium chlorate solution, if the density of the solution is 1.39 g mL-1.
Tuesday, February 28, 2012 at 2:41pm by colin

Gen Chem
Light of wavelength 272 nm shines on a piece of magnesium metal. What is the speed of the ejected electron? (Light energy greater than that of the work function of magnesium ends up as kinetic energy of the ejected electron. The work function is the minimum energy needed to ...
Monday, January 18, 2010 at 2:08am by Z

science
What elements does the compound MgCL2, magnesium chloride, contain? A. Chloride only B. Magnesium only C. M
Wednesday, November 9, 2011 at 8:26pm by stephanie

chemistry
Write the balanced chemical reaction for the rusting of iron? the acidic vinegar dissolved a protective coating off the steel wool, allowing the oxidation of the steel to begin. This process is called rusting. In this reaction, iron(III) is combined with oxygen gas to form ...
Monday, April 23, 2007 at 3:03pm by Rox

Chem
Epsom salts consist of magnesium sulfate heptahydrate. Write its formula. a) How many atoms of oxygen are in 5.15g of Epsom salts? b) How many formula units of the compound are present in 5.15g? c) How many moles of water molecules are in 5.15 g of Epsom salts? Thank you so ...
Friday, October 7, 2011 at 3:05am by Erica

physics
if 3e charge is at the origin and magnesium nucleus is 3cm fom thr origin in the x-axis. what is the magnitude of the net electrostatic force a Boron nucleus would experience at a point half way between magnesium nucleus and 3e.
Sunday, November 10, 2013 at 9:54am by james

Chemistry 11
Carbon monoxide gas reacts with oxygen gas to form carbon dioxide gas acooridng to the following equation: 2CO(g)+O2(g)--> 2 CO2(g) IF 1 mole of CO2(g) is produves, how many kilojoules of heat energy are absorbed or released ?
Sunday, September 12, 2010 at 12:55pm by Alz

Chemistry
Answer the following questions about the characteristics of the elements in Group 2 (the alkaline earths). How do they react with iodine? How do they react with water? How do they react with oxygen? Which reacts the most vigorously? Which element in the group is the most ...
Wednesday, February 5, 2014 at 8:26pm by Stacy

Chemistry
Answer the following questions about the characteristics of the elements in Group 2 (the alkaline earths). How do they react with iodine? How do they react with water? How do they react with oxygen? Which reacts the most vigorously? Which element in the group is the most ...
Wednesday, February 5, 2014 at 8:27pm by Help

cheMYSTERY
A 20.00 mL of 0.200mol/L magnesium chloride solution is added to a 95.00 mL of 0.800 silver (I) nitrate solution,Determine the concetration of the silver ions at the end of the reaction and the magnesium ions. and a precipitate is formed.
Tuesday, April 22, 2014 at 9:16pm by sandeep singh

chemistry
When aqueous solutions of potassium carbonate and magnesium nitrate are combined, solid magnesium carbonate and a solution of potassium nitrate are formed. The net ionic equation for this reaction is:
Monday, March 3, 2014 at 4:27pm by Kay

Chemistry
In an experiment 2.750 g of magnesium is reacted with 2.571 g of oxygen gas according to the equation: Mg + O2 ==> MgO. What mass of the other reactant is in exess? You need equal number of moles of each. Which has the excess? moles Mg=2.750/molmassMg moles O2=2.571/32 One...
Sunday, June 3, 2007 at 4:49pm by Ashley

SMK Duma
how to calculate ? when 21g of magnesium carbonate was heated , magnesium oxide produced . carbon dioxide also released. what is the volume of carbon dioxide released ?
Tuesday, June 5, 2012 at 9:28am by Nurlisa

chemistry
1- A compound is 87.5% nitrogen and 12.5% hydrogen. The molecular weight of the compound is 32 g/mol. Describe the molecule referencing shape, and inter-molecular forces. 2- Gaseous butadiene, C4H6 , reacts with hydrogen gas in the presence of a platinum catalyst to form ...
Monday, January 6, 2014 at 5:56pm by Katie

science
Consider a 1.50-g mixture of magnesium nitrate and magnesium chloride.After dissolving this mixture in water,0.500M silver nitrate is added dropwise until precipitate formation is complete. THe mass of the white precipitate formed is 0.641 g. a)Calculate the mass percent of ...
Wednesday, January 2, 2008 at 3:19pm by Brianna

Chemistry , please !
when 21g of magnesium carbonate was heated , magnesium oxide produced . carbon dioxide also released. what is the volume of carbon dioxide released ?
Tuesday, June 5, 2012 at 9:50am by Ikram

CHEMISTRY
Given that Mg(ClO3)2 decomposes into magnesium chloride and oxygen: A) Write a balanced equation for this reaction. I got Mg(ClO3)2 yields MgCl2 + 3 O2 Is that right? B) If 0.302 grams of O2 is lost from 1.890 grams of a mixture of Mg(ClO3)2 and an inert material, what is the ...
Monday, September 30, 2013 at 12:59pm by Allie

CHEMISTRY
Given that Mg(ClO3)2 decomposes into magnesium chloride and oxygen: A) Write a balanced equation for this reaction. I got Mg(ClO3)2 yields MgCl2 + 3 O2 Is that right? B) If 0.302 grams of O2 is lost from 1.890 grams of a mixture of Mg(ClO3)2 and an inert material, what is the ...
Monday, September 30, 2013 at 1:00pm by Allie

Chemistry
According to his prelaboratory theoretical yield calculations, a student's experiment should have produced 1.44 g of magnesium oxide. When he weighed his product after reaction, only 1.23 g of magnesium oxide was present. what is the student's percent yield?
Monday, February 16, 2009 at 7:04pm by Sia

Chemistry
Given a 10.0g sample of MgCO3*5H2O, what weight of anhydrous magnesium carbonate can be obtained after driving off the water? The GFM of the sample is 174.3amu. Now.. how do I go about finding the weight of the magnesium carbonate?
Monday, November 9, 2009 at 12:12am by c

Chemistry
For every liter of sea water that evaporates, 3.70g of magnesium hydroxide are produced. How many liters of sea water must evaporate to produce 5.00 moles of magnesium hydroxide? Please show and explain all steps! Thank you!
Wednesday, September 29, 2010 at 8:35pm by Jack

Chemistry
An antacid tablet containing magnesium hydroxide instead of calcium carbonate was dissolved in 100.0 mL of 0.2893 M HCL. 10 mL of this solutions was titrated to endpoint with 25.20 mL of 0.1007 M NaOH. How much magnesium hydroxide was in the antacid tablet(in mg)? Any help is ...
Tuesday, May 7, 2013 at 9:28pm by Mindy

Chemistry II
17.5 mL of oxygen gas were collected at room temperature (22oC) and 100.2 kPa of atmospheric pressure. a) How many moles of oxygen gas were produced? b) What is the molar volume of the oxygen gas at the conditions in the laboratory?
Monday, September 14, 2009 at 11:38pm by pasely

CHEM Help!
My homework is about translating word equations and I need help in answering this question. Sodium phosphate reacts with calcium nitrate to produce sodium nitrate and calcium phosphate. What would be the answer? I also need help with this other question because it is kind of ...
Tuesday, March 11, 2008 at 4:40pm by Anony

Physics
48.0 g of oxygen (O2 is diatomic) are confined in a rigid 1.00x10^3 L cubical container at temperature 300.0 K. Find the gas pressure and the force exerted by the oxygen gas on any of the six faces of the cube. Mass number of an oxygen atom is 16.0 1.00L=10^-3 m^3
Wednesday, April 24, 2013 at 11:56am by Lashawn

chemistry
Mercury reacts with oxygen to produce mercury(II) oxide. Hg(l) + O2(g) → HgO(s) a. Balance the reaction equation. Include physical states. 2Hg(l) + O2(g) → 2HgO(s) b. What is the theoretical yield (in grams) of HgO if 255 g of Hg are reacted with 255 g of O2? ???
Tuesday, February 14, 2012 at 10:32pm by krystal

biology
list 2 forms of oxygen found in the atmosphere name the process by which [1]oxygen from the atmosphere is used up [2]oxygen is returned to the atmosphere
Monday, February 27, 2012 at 10:25am by akansha

Chemistry 2 Ap
If 10.0 g of hydrogen gar reacts with 20.0 g of oxygen gas, how much water will be made? So far this is all i have: (10.0g H2/1)(2molH2/2.02H2) = 9.0099 mol H2 (20.0g O2/1)(2mol O2/32g O2) = 1.25 mol O2 With the limited reactant being O2 Now what do i do? I also have to find ...
Wednesday, September 10, 2008 at 12:01am by jecce.

AP CHEM
help please. i don't even know where to start An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a temperature of 15?C. When the container is evacuated and refilled with a ...
Wednesday, January 23, 2008 at 4:12pm by Nikki

Physics
An oxygen tank of volume V is stored in a medical laboratory. Initially, the tank is full of compressed oxygen at pressure p_{0} . Lab regulations require a refill when the pressure in the tank drops to p_{2} so as to avoid contaimination by impure gas. Suppose that the daily ...
Monday, September 23, 2013 at 5:51pm by Anon.

Chemistry
50.00 mL of OOH was diluted to 250.0 mL with deionized water. In the determination of the total cation concentration, 25.00 mL aliquots of the dilute OOH were passed through a cation exchange column and the eluent titrated with an average 27.42 mL of 0.1134 M NaOH. In the ...
Wednesday, January 25, 2012 at 5:45pm by Camice

Chemistry
50.00 mL of OOH was diluted to 250.0 mL with deionized water. In the determination of the total cation concentration, 25.00 mL aliquots of the dilute OOH were passed through a cation exchange column and the eluent titrated with an average 27.42 mL of 0.1134 M NaOH. In the ...
Thursday, January 26, 2012 at 5:51am by Georgia

chemistry
50.00 mL of OOH was diluted to 250.0 mL with deionized water. In the determination of the total cation concentration, 25.00 mL aliquots of the dilute OOH were passed through a cation exchange column and the eluent titrated with an average 27.42 mL of 0.1134 M NaOH. In the ...
Thursday, January 26, 2012 at 10:17pm by Annabelle

chem
A 2.241 g sample of nickel reacts with oxygen to form 2.852 g of the metal oxide. Calculate the empirical formula of the oxide. 1)NiO Give the number of moles of each element to support you answer. moles of Ni 2) 1.339 mol moles of O 3)1.34 mol I know #1 is correct but 2 and 3...
Friday, November 12, 2010 at 5:20pm by hannah

science
julie carried out a chemical reaction using magnesium and an acid the products of the reaction were magnesium chloride and hydrogen. julie collected a test tube of the hydrogen. describe what she should do to show that it was hydrogen.
Wednesday, March 23, 2011 at 1:13pm by chloe

science
julie carried out a chemical reaction using magnesium and an acid the products of the reaction were magnesium chloride and hydrogen. julie collected a test tube of the hydrogen. describe what she should do to show that it was hydrogen.
Wednesday, March 23, 2011 at 1:13pm by chloe

science
julie carried out a chemical reaction using magnesium and an acid the products of the reaction were magnesium chloride and hydrogen. julie collected a test tube of the hydrogen. describe what she should do to show that it was hydrogen.
Wednesday, March 23, 2011 at 1:13pm by chloe

Chemistry
An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? b. What is the mas in milligrams of 0.0457 mole of magnesium hydroxide?
Monday, July 1, 2013 at 11:58am by Glenn

Chemistry
An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? b. What is the mas in milligrams of 0.0457 mole of magnesium hydroxide?
Monday, July 1, 2013 at 12:07pm by Glenn

physics
if 3e charge is at the origin and magnesium nucleus is 3 cm from the origin in the x-direction. what is the magnitude of the net force a boron nucleus would experience half way between magnesium nucleus and 3 e charge
Monday, November 11, 2013 at 2:46am by james

physiology
anaerobic respiration is triggered when the ratio of ________falls below a critical level. a.carbon dioxide supply to oxygen need b.oxygen supply to glucose need c.glucose supply to glucose need d.oxygen supply to oxygen need the electron transport chain is responsible for the...
Wednesday, September 17, 2008 at 2:16am by Natash

chemistry
How many moles of magnesium is 1.25 x 1023 atoms of magnesium? A. 0.208 101 mol Mg B. 2.08 101 mol Mg C. 2.08 10 -1 mol Mg D. 20.8 mol Mg I think it would be D
Saturday, November 10, 2012 at 9:20pm by Drew

physics urgent help !
if a 3e charge is at the origin and a magnesium nucleus is 3 cm from the originin the x-axis direction.what is the magnitude of the net electrostatic force a Boron nucleus would experience at the point half way between magnesium nucleus and 3e charge on the y-axis in N
Monday, November 11, 2013 at 4:13am by james

Chem
which of the following occurs when a sample of 0.1M HNO3 is tested? a) phenolphthalein turns pink b) bromthymol blue turns yellow c) Ca9s) reacts and produces CO2 (g) d) Na (s) reacts and rpoduces NO2 (g)
Wednesday, December 15, 2010 at 5:12pm by Liz

Chemistry
I don't know exactly how to start this question: A sample gas contains 2.95 x 10e24 molecules. The sample is 21.0% oxygen. Calculate volume of oxygen in liters assuming oxygen has a density of 1.308 g/L. Please help me how to do this. I have been stuck and still trying to ...
Friday, October 26, 2012 at 7:55pm by Elizabeth

science
how do i balance this equation: sodium hydroxide reacting with sulfurous acid [1 mol sulfurous acid reacts with 2 moles hydroxide ion] my hydrogens aren't balancing right 2 NaOH + H2SO3 -> Na2SO3 + 2 H2O ah thx, i accidently wrote H3O Why are oxygen tanks and spacesuits ...
Thursday, October 19, 2006 at 6:47pm by Dan

Chemistry
8.40 grams of Hydrogen gas reacts with 48.2 grams of Oxygen gas. Give the mass of the water vapor produced and the mass of the excess reactant left over. Can somebody please explain stoichiometry to me? I've failed the test and the retest. I'm usually able to balance the ...
Monday, November 29, 2010 at 7:26pm by Anna

science
Would you expect the dissolved oxygen concentration of water samples taken from a lake at 7 am to be higher or lower than samples takn at 5 pm? I feel like there may be more dissolved oxygen in the sample taken at 7 am because photosynthesis probably took place and oxygen was ...
Wednesday, May 7, 2008 at 4:25pm by Jin

chemistry
Magnesium can be produced by reaction of magnesium oxide (MgO) with silicon (Si). The by-product of the reaction is magnesium orthosilicate (Mg2SiO4). A reactor is charged with 183.0 kg of MgO and 116.0 kg Si. Assume the reaction goes to completion. Express your answers in kg...
Saturday, March 23, 2013 at 3:32pm by schoolgirl

chemistry
2) Suppose you have 5.00g of powdered magnesium metal, 1.00L of 2.00M potassium nitrate solution, and 1.00L of a 2.00M silver nitrate solution. a. Which one of the solutions will react with the magnesium powder?
Sunday, March 17, 2013 at 1:04pm by Anonymous

physics
the melting temperature of magnesium is 650c what is the melting temperature of magnesium in fahrenheit
Thursday, March 11, 2010 at 9:51am by Anonymous

chemistry
A sample of magnesium weighs 10 grams. How many moles of magnesium are there in the sample? 0.4 moles?
Sunday, February 5, 2012 at 1:26pm by kr

Physics
Oxygen for hospital patients is kept in special tanks, where the oxygen has a pressure of 62.0 atmospheres and a temperature of 293 K. The tanks are stored in a separate room, and the oxygen is pumped to the patient's room, where it is administered at a pressure of 1.00 ...
Tuesday, January 6, 2009 at 6:34pm by Z

chemestry
At 298.K and 1.00 atm, assume that 22 mL of NO gas reacts with 18 mL of oxygen gas and excess water to produce nitric acid according to the following equation: O (g) H O(l) 2 HNO (g) 2 3 2NO(g) + 2 + 2 3 . If all of the nitric acid produced by this reaction is collected ...
Tuesday, November 2, 2010 at 8:30am by lore

Chemistry
When 1.5 grams of magnesium burns, how many grams of magnesium oxide will be formed? a) Write a balanced chemical equation for the above reaction. b) Show by unit conversion (show conversion factors, ie. 2 g H20 x 1 mole H2O/18 g H2O x ...... x ...... = answer
Friday, June 15, 2012 at 1:12pm by Ashley

Chemistry
If water is added to magnesium nitride, ammonia gas is produced when the mixture is heated. Mg3N2(s) + 3 H2O(l) => 3 MgO(s) + 2 NH3(g) If 11.1 g of magnesium nitride is treated with water, what volume of ammonia gas would be collected at 23°C and 739 mm
Sunday, November 18, 2012 at 11:57pm by sam

chem101
Hydrogen gas can be produced in the lab by the reaction of magnesium metal and hydrochloric acid. Mg + 2 HC -> MgCl2 + H2 How many grams of hydrogen gas will be produce if 5.00 g of magnesium metal is dissolved in excess acid.
Thursday, March 24, 2011 at 3:47pm by richard

chem
A 4.91 g sample of aluminum completely reacts with oxygen to form 6.85 g of aluminum oxide. Use this data to calculate the mass percent composition of aluminum in aluminum oxide. i got 61.2% first and it was wrong. then i got 53.0% and it was wrong
Thursday, November 11, 2010 at 5:06pm by hannah

Chemistry
Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a temperature of 15C. ...
Saturday, May 31, 2008 at 5:55pm by Alex

chemisty
1.5 grams hydrogen 12 oxygen 2gram hydrogen 16 gram oxygen 2.5grams hydrogen 20grams oxygen
Friday, December 14, 2012 at 3:07pm by dionna

chemisty
1.5 grams hydrogen 12 oxygen 2gram hydrogen 16 gram oxygen 2.5grams hydrogen 20grams oxygen
Friday, December 14, 2012 at 3:37pm by dionna

chemistry
N2 + O2 --> 2 NO change in heat (delta H)= 43.2 kcal based on the reaction, which statement is true? a) 43.2 kcal are consumed when 1.00g of O2 reacts b) 43.2 kcal are consumed when 1.00g of N2 reacts c) 43.2 kcal are consumed when 1.00g of NO is produced d) 43.2 kcal are ...
Monday, November 2, 2009 at 11:07am by Katie Y.

Chemistry
Draw the condensed structural formula for ethylbenzene, 1,3 dichlorobenzene,1,2 and 4-trimethylbenzene ? Any help would be appreciated, thank you I also was wondering if anyone could let me know if I am going in the correct direction with this question> Acetylene gas reacts...
Monday, July 26, 2010 at 6:10pm by Beth

Chemistry
Assume that a reaction occurs in which unknown substances R and S react to form unknown substances T and U. From the information below, determine the mass of substance T that will be formed if 45.0 grams of substance R reacts with 23.0 grams of substance S. (Assume that the ...
Tuesday, May 20, 2008 at 8:07pm by Daniel

science-biology help
knowing that as the steepness of a concentration graident increases, the rate of diffusion increases, explain how a single celled organisms would respond in an oxygen rich pond compared to an oxygen poor pond. I'm not really sure but in an oxygen poor pond there is a small ...
Saturday, October 17, 2009 at 8:03pm by eleanor

General Chemistry
Nitric oxide (NO) reacts with oxygen gas to form nitrogen dioxide (NO2), a dark-brown gas: 2NO(g) + O2(g) -> 2NO2(g) In one experiment 0.886 moles of NO is mixed with 0.503 moles of O2. Calculate which of the two reactants is the limiting reagent. Please show set up of ...
Monday, May 24, 2010 at 2:40pm by Kendra

Genera Chemistry
Nitric oxide (NO) reacts with oxygen gas to form nitrogen dioxide (NO2), a dark-brown gas: 2NO(g) + O2(g) -> 2NO2(g) In one experiment 0.886 moles of NO is mixed with 0.503 moles of O2. Calculate which of the two reactants is the limiting reagent. Please show set up of ...
Wednesday, May 26, 2010 at 12:46pm by Kendra

density of Magnesium!
Magnesium crstallizes in the hcp arrangment. The dimensions of the unit cell are height 520om, length on an edge, 320. Calculate the density of Mg (s) and compare it with the measured value of 1.738 g/cm^3 this is what i did : m= 2* 24.30g/6.022*10^23 = 8.07*10^-23 v= l^2*h v...
Friday, February 6, 2009 at 7:34pm by sandy

college
Use the following information to identify element A and compound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790 torr and a temperature of 15 C. When ...
Monday, November 2, 2009 at 10:52am by Ada

Science
At a given temperature and pressure, the volume of a gaseous sample is directly proportional to the moles of gas (volume = C * moles, where C is a constant). Assuming that the tempreature and pressure is the same for the reaction of magnesium with HCl(aq) and zinc with HCl(aq...
Wednesday, March 13, 2013 at 11:49pm by Amy

Science
At a given temperature and pressure, the volume of a gaseous sample is directly proportional to the moles of gas (volume = C * moles, where C is a constant). Assuming that the tempreature and pressure is the same for the reaction of magnesium with HCl(aq) and zinc with HCl(aq...
Wednesday, March 13, 2013 at 11:50pm by Amy

Science
At a given temperature and pressure, the volume of a gaseous sample is directly proportional to the moles of gas (volume = C * moles, where C is a constant). Assuming that the tempreature and pressure is the same for the reaction of magnesium with HCl(aq) and zinc with HCl(aq...
Wednesday, March 13, 2013 at 11:51pm by Amy

chem-help
Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a temperature of 15C. ...
Wednesday, December 3, 2008 at 11:54pm by Anne

science lab
I got these results from my dissolved oxygen lab: Temperature Dissolved Oxygen in Celcius (mg/L) 17 5.8 21 5.4 23 5.3 27 5.1 I understand that as the temperature increases the dissolved oxygen concentration decreases but i don't understand how to answer this question: does ...
Sunday, September 13, 2009 at 4:43pm by cara

Chemistry
A gaseous mixture containing 4.15 mol of hydrogen gas and 7.13 mol of oxygen gas reacts to form steam (a) Write the balanced equation for the reaction. (b) What is the limiting reactant? (c) What is the theoretical yiels of steam in moles? (d) How many moles of the excess ...
Sunday, August 22, 2010 at 3:12am by Jao

Chemistry
Regular gasoline (C8H18) reacts with oxygen gas to form carbon dioxide gas and water vapor. If your tanks of gasoline holds about 10.5 kg of gasoline, how many liters of carbon dioxide are formed at 24 degrees Celcius and 725mm Hg from the combustion of one tank of gasoline?
Wednesday, April 18, 2012 at 8:38pm by Linda

General Chem
At a given temperature and pressure, the volume of a gaseous sample is directly proportional to the moles of gas (volume = C * moles, where C is a constant). Assuming that the tempreature and pressure is the same for the reaction of magnesium with HCl(aq) and zinc with HCl(aq...
Monday, March 11, 2013 at 7:07pm by Amy

Conceptual Physical Science
What is the approximate mass of an oxygen atom in atomic mass units? What is the approximate mass of two oxygen atoms? How about an oxygen molecule?
Saturday, July 10, 2010 at 6:29pm by Laticia

chemistry
Aluminum metal reacts with oxygen gas (O2) to form aluminum oxide. a. Write a balanced equation for this oxidation-reduction reaction. (In this problem you need not worry about the physical state of the reactants or product.) 2Al+3O2=2Al2O3 b. which reactant is oxidized? O2 c...
Tuesday, February 14, 2012 at 10:00pm by krystal

Chemistry
1) The formation of water is represented by the following equation : 2H2(g) + O2(g) -> 2H2O(g) a.What is the limiting reactant if 4 mol of oxygen reacts with 16 mol of hydrogen? b.What amount (in moles) of water is produced in this reaction? 2) . Sliver nitrate, AgNO3(aq),...
Wednesday, December 19, 2012 at 10:45pm by IMPO QUESTION

Chemistry
1. Hydrogen gas combines with oxygen gas to yield water. if 15 g O2 is present in the reaction, compute how much water will be produced. 2. Ten (10)grams methane gas combines with oxygen gas to form water and carbon dioxide. How much water is produced from the given reaction? ...
Wednesday, August 28, 2013 at 10:24am by Matt

CHEMISTRY
hydrogen reacts with nitrogen to produce ammonia. 3H2(g)+ N2(g) = 2NH3(g) Determine how much ammonia would be produced if 100g of hydrogen reacts?
Monday, April 4, 2011 at 7:21pm by Anonymous

Chemistry
We're learning about single displacement reactions. What happens when Mg + Zn two nitrate reacts? And when Al + Zn two nitrate reacts? Are there colour changes or precipitates formed?
Thursday, March 17, 2011 at 2:53pm by Mar

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 Sulfate Carbon Dioxide ...
Monday, December 10, 2012 at 9:21pm by Kaylee

Chemistry 130
Can someone please help me with these questions? 1 (7). Rank the following in order of increasing radius based on their positions on the periodic table: S, S-2, Cl a. S, S-2, Cl b. S-2, Cl, S c. Cl, S, S-2 d. Cl, S-2, S e. S, Cl, S-2 6 (16). Methane burns in oxygen according ...
Tuesday, September 8, 2009 at 1:22pm by Jessie

Chemistry
If water I'd added to magnesium nitride, ammonia gas is produced when the mixture is heated Mg3N2 (s) + 3H2O (l) ----> 3MgO) (s) + 2NH) (g) *Only the numbers at the beginning aren't subscripts* If 10.3 g of magnesium nitride is treated with water, what volume of ammonia gas...
Wednesday, January 19, 2011 at 12:58am by Anon

Chemistry
Iron and manesiu are two common elements found in numerous compounds. magnesium is always in the +2 oxidation state while iron exhibits oxidation states of +2, +3,+4,and +6. why would magnesium not be found in the these upper oxidation states.
Wednesday, May 20, 2009 at 12:01am by Anonymous

Chemistry
An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? 2.56 x 10^-3 mol Al(OH)3 is that correct? b. What is the mass in milligrams of 0.0457 mole of magnesium hydroxide? 2.665 x 10^-...
Monday, July 1, 2013 at 4:26pm by Tiffany

physics/chemistry
A rigid tank contains 0.40 moles of oxygen (O2). Determine the mass (in kg) of oxygen that must be withdrawn from the tank to lower the pressure of the gas from 37 atm to 23 atm. Assume that the volume of the tank and the temperature of the oxygen are constant during this ...
Monday, January 3, 2011 at 9:34pm by kate

Chemistry
Magnesium metal reacts with hydrochloric acid to produce hydrogen gas H2 Mg + 2HCl ----> MgCl + H2 Calculate the volume (in liters) of hydrogen produced at 33 degrees C and 665 mmHg from 0.0840 mol Mg and excess HCl P= .875 atm V= ? n= .0840 mol R= 0.0821 T= 306 K V= nRT/ P...
Tuesday, October 23, 2007 at 7:57pm by Lauren

Chemistry
Magnesium has three naturally occurring isotopes: 24 Mg (23.985 amu) with 78.99% abundance, 25 Mg (24.986 amu) with 10.00% abundance, and a third with 11.01% abundance. Look up the atomic mass of magnesium, and then calculate the mass of the third isotope.
Tuesday, November 16, 2010 at 7:53pm by Anonymous

Chemistry
10.0 grams of magnesium reacted with fluorine to produce MgF2 Find balance equation: 2MgF2=2MgF 1)can someone explain to me how many grams of fluorine reacted with magnesium. 2)How many grams of MgF2 were formed in the reaction?
Sunday, December 2, 2012 at 3:21pm by malina

Science
Uranium-238 is less stable than oxygen-16. What accounts for this difference? (A) Uranium is a solid, while oxygen is a gas. (B) Unlike oxygen-16, uranium-238 has a nucleus in which repulsive electric forces surpass the strong nuclear forces. (C) Oxygen-16 has fewer electrons ...
Wednesday, November 20, 2013 at 6:53pm by AJ

Chemistry
At 298 K, the Henry\'s law constant for oxygen is 0.00130 M/atm. Air is 21.0% oxygen.At 298 K, what is the solubility of oxygen in water exposed to air at 1.00 atm? At 298 K, what is the solubility of oxygen in water exposed to air at 0.896 atm? If atmospheric pressure ...
Thursday, February 7, 2013 at 4:12pm by Colleen

science
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
Sunday, March 31, 2013 at 2:24pm by jeff

science
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
Sunday, March 31, 2013 at 1:44pm by jeff

science
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
Sunday, March 31, 2013 at 3:36pm by jeff

science
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
Sunday, March 31, 2013 at 4:37pm by jeff

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