Mole Ratios

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• Question #a106e
• Question #e2e86
• Question #a1072
• Question #c5bf1
• Question #dc373
• Question #c5bf9
• Question #a1076
• Question #dc377
• Question #b984f
• Question #19ea3
• What conversion factor is always used in stoichiometry problems?
• What is the O2 / H2O molar ratio? 2 H2 + O2 ---> 2 H2O
• Why are mole ratios central to stoichiometric calculations?
• What is the H2 / H2O molar ratio? 2 H2 + O2 ---> 2 H2O
• Why are mole ratios important?
• What are the mole ratios in the chemical equation H2+Cl2?
• If 8 moles of magnesium chloride react with enough aluminum, how many moles of aluminum chloride are produced? 3 MgCl2 + 2 Al → 3 Mg + 2 AlCl3
• Given this equation: N2 + 3 H2 ---> 2 NH3, write the following molar ratios: a) N2 / H2, b) N2 / NH3 and c) H2 / NH3
• Why do we know that in the balanced chemical equation C + O2 ---> CO2, 1 g of C will not react exactly with 1 g of O2?
• How many moles of P4 are needed to react with 9 moles of Mg? 6 Mg + P4 → 2 Mg3P2
• How does a mole ratio help to determine the amount of component?
• How can I find the mole ratio of anhydrous salt to water?
• How many molecules of C3H8 are required to react with 10 molecules of O2? C3H8(g) + 5 O2(g) ---> 3 CO2(g) + 4 H2O(l)
• How are mole ratios used in chemical calculations?
• Why are mole ratios central to solving stoichiometry problems?
• How do mole ratios compare to volume ratios?
• What are some common mistakes students make with mole ratios?
• What is an example of a mole ratios practice problem?
• What are mole ratios?
• What are some examples of mole ratios?
• Does 1 mol of something=1 mol something else? For example, is 1 mol H2O equivalent to 1 mol NaCl? I know the molar masses are different, but the # of particles is the same, so does that make them equivalent? (for the sake of creating conversion factors)
• Question #209d0
• Question #a73d6
• What mass in grams of #"HCl"# reacts completely with #"3.208 g Pb"# in the following reaction?
• Question #2c57a
• Question #19122
• Question #d03c9
• Question #5f174
• Question #2c98c
• Question #85af7
• How many grams of Al are required to completely react with 81.2 g of MnO2. What is the mole ratio between MnO2 and Al in the balanced equation? 3MnO2 +4Al--> 3Mn+2Al2O3?
• How many moles of lead (II) hydroxide will be produced from 3.0 moles of lithium hydroxide assuming there is an excess of lead (II) sulfate?
• Question #6cee9
• Question #30c24
• In the decomposition of potassium chlorate, how many moles of potassium chlorate are needed to produce 50 moles of oxygen gas?
• Question #4f2a0
• Question #106e3
• Question #cbc36
• Question #f349d
• Question #103f4
• Question #41855
• How many moles of hydrogen are needed to completely react with two moles of nitrogen? According to the reaction: N2 + 3H2 -->2NH3
• Question #79a24
• How many moles of chlorine gas are needed to make 0.6 moles of sodium chloride given the reaction: #2Na + Cl_2 -> 2NaCl#?
• For the reaction #2H_2 + O_2 -> 2H_2O#, how many moles of water can be produced from 6.0 mol of oxygen?
• How many moles of hydrogen fluoride will react with #5.90# moles of silicon dioxide to produce silicon tetrafluoride?
• How many moles of #CO# and #O_2# are required to produce 10 moles of #CO_2# in the reaction #2CO + O_2 -> 2CO_2#?
• In the equation #N_2 + H_2 -> NH_3#, what mass of ammonia gas can be produced from 12 mol of hydrogen gas?
• For the reaction #2HNO_3 + Mg(OH)_2 -> Mg(NO_3)_2 + 2H_2O#, how many grams of magnesium nitrate are produced from 8 moles of water?
• What is the molar ratio for the chemical reaction #Al + O_2 -> Al_2O_3#?
• In the reaction #Al_2(SO_4)_3 + 6NaOH -> 2Al(OH)_3 + 3Na_2(SO_4)_3#, how many moles of #Al(OH)_3# can be made with 2.3 moles of #NaOH# and excess #Al_2(SO_4)3#?
• In the reaction #H_2(g) + F_2(g) ->2HF(g)#, how many grams of #HF# gas are produced as 5 mol of fluorine react with excess #H_2#?
• A chemist performs the reaction #6ClO_2 + 3H_2O -> 5HClO_3 + HCl#. If a chemist wants to make 50.0 g of #HClO_3#, what is the minimum number of grams of #ClO_2# that she can use?
• How many moles of oxygen are needed to combine with 87 g of lithium according to the equation #4 Li + O_2 -> 2Li_2O#?
• In the reaction #Zn + 2HCl -> ZnCl_2 + H_2#, how many moles of hydrogen will be formed when 4 moles of #HCl# are consumed?
• Given the equation, #CH_4 + 2O_2->2H_2O + CO_2#, what is the total number of moles of oxygen that must react to produce 5 moles of carbon dioxide?
• In the reaction #2Mg + O_2 -> 2MgO#, the law of definite proportions states that for every 2 moles of #Mg# you will need how many moles of #O_2#?
• Question #99eac
• Question #3c541
• #Mg# and #O_2# react in a 2.1 molar ratio. 2 moles #M_g# = 1 mole #O_2#. If a reaction used 32.5 g of #O_2#, how many g of #Mg# reacted?
• What amount, in mol, of carbon dioxide will be formed when three moles of methyl propane are combusted completely?
• How many moles of #"NiCl"_2# are required to produce #"0.715 moles Ni"_3"(PO"_4)_2"#?
• Question #32eca
• How many moles of silicon are there in each mole of silicon dioxide, #siO_2#?
• What is the total number of moles of #NaCl# formed when 2 moles of #Na_2CrO_4# react completely?
• How do we represent the complete combustion of octane?
• How many moles of hydrogen will be needed to react with 2 moles of nitrogen in the reaction #N_2 + H_2 -> NH_3#?
• How many moles of oxygen will be needed to completely oxidize 4 moles of #CH_4 + O_2 -> CO_2 + H_2O#?
• How many moles of oxygen will be produced from the decomposition of 3 moles of #KClO_3# in the reaction #KClO_3 -> KCl + O_2#?
• How many moles are necessary to react completely with four moles of propane in the reaction #C_3H_8 + 5O_2 -> 3CO_2 + 4H_2O#?
• How many moles of hydrogen are produced from the reaction of three moles of zinc with an excess of hydrochloric acid in #Zn + 2HCl -> ZnCl_2 + H_2#?
• In the equation #Al_2(SO_4)_3 + 6NaOH -> 2Al(OH)_3 + 3Na_2SO_4#, what is the mole ratio of #NaOH# to #Al(OH)_3#?
• What is the mole ratio of #SnCl_4#?
• How many moles of #CoO(s)# will be formed for every mole of #CoCl_2 * 6H_2O(s)#?
• For the balanced equation #2C_2H_5OH + 6O_2 -> 4CO_2 + 6H_2O#, how many moles of #O_2# will react with 0.3020 moles of #CO_2#?
• When 4.22 moles of #Al# reacts with 5.0 moles of #HBr#, how many moles of #H_2# are formed?
• Question #fe34c
• How many moles of #CO_2# are produced from 0.110 mole #O_2#?
• How many moles of #C# are needed to react with 0.480 mole #SO_2#?
• How many moles of #NH_3# are produced when 1.2 moles #H_2# reacts?
• What is the mole ratio of #Fe_3O_4# to #Fe# in the equation #3Fe + 4H_2O -> Fe_3O_4 + 4H_2#?
• Given the equation #2H_2O ->2H_2 + O_2#, how many moles of #H_2O# would be required to produce 2.5 moles of #O_2#?
• Given the equation #2H_2O -> 2H_2 + O_2#, how many moles of #H_2O# be required to produce 2.5 moles of #O_2#?
• Question #fc782
• How is oxygen cycled in human metabolism?
• How many moles of water are made from the complete reaction of 2.2 moles of oxygen gas with hydrogen gas in the reaction #2H_2 + O_2 -> 2H_2O#?
• How many moles of #O_2# are required to generate 18 moles of #H_2O# in the reaction #2C_8H_18 + 25O_2 -> 16CO_2 + 18H_2O#?
• How many mols #CaCO_3# can be dissolved in .0250 mol #HCl# in the equation #CaCO_3 + 2HCl -> CaCl_2 + H_2O + CO_2#?
• How many moles of magnesium oxide are formed when 4 moles of magnesium react with oxygen in the reaction #2Mg + O_2 -> 2MgO#?
• Question #27862
• Given the balanced equation, #2SO_2 + O_2 -> 2SO_3# , what is the molar ratio of #O_2# to #SO_3#?
• Question #db008
• Question #d111c
• How many moles of nitrogen atoms are there in .3400 moles of ammonium nitrate, #NH_4NO_3#?
• How do you balance #CS_2 + Cl_2 -> C Cl_4 + S_2Cl_2#? What is the mole ratio of #Cl_2# to #C Cl_4#?
• If 3.00 moles of #H_2O# are produced, how many grams of hydrogen gas are used?
• Question #e81fc
• In the reaction represented by the equation #2Al_2O_3 -> 4Al + 3O_2#, what is the mole ratio of aluminum to oxygen?
• How many moles of silver(I) bromide are produced when #6.45# moles of sodium bromide take part in the reaction?
• What is the molar ratio of #Li# to #N_2# in the reaction #6Li + N_2 -> 2Li_3N#?
• How many moles of #HNO_3# will be produced when .51 mol of #N_2O_5# reacts in the equation #N_2O_5 + H_2O -> 2HNO_3#?
• Question #f9cef
• Question #284f8
• How many moles #"Ag"_2"O"# are needed to produce #"4.24 mol O"_2"#?
• Question #1e76e
• Question #554f2
• How many moles of sodium oxide will be produced when 10 moles of sodium react with oxygen?
• #(NH_4)_2Cr_2O_7 (s) -> N2 (g) + 4H_2O (g) + Cr_2O_3 (s) + 200 kJ#. What is the molar ratio?
• How many moles of oxygen would have be consumed to produce 68.1 g of water in the reaction #C_3H_8 + 5O_2 -> 3CO_2 + 4H_2O#?
• How many moles of #Ba(OH)_2# are present in 225 mL of 0.800 M #Ba(OH)_2#?
• In one mole of freon (#C Cl_2F_2#), what is the chemical ratio of carbon to chlorine to fluorine?
• What is the lowest whole number ratio of the elements in a compound called?
• What is the lowest whole number ratio of an element?
• How many moles of # Pb(NO_3)_2# are required if 12 moles of # Al(NO_3)_3# are produced?
• How many moles of #CO_2# are produced if 6 moles of #O_2# are used?
• For #CH_4 +2O_2 -> CO_2 + 2H_2O#, the molar mass of oxygen gas (#0_2#) is 32.00 g/mol. The molar mass of carbon dioxide (#CO_2#) is 44.01 g/mol. What mass of #CO_2#, in grams, will form when 8.94 g #O_2# completely react?
• Consider #N_2H_4+ 2H_2O_2 -> N_2+4H_2O#, what are the mole ratios of hydrazine (#N_2H_4#) to hydrogen peroxide (#H_2O_2#) and hydrazine to water?
• Question #82e8d
• What is the mole ratio of #Cl_2# to #Br_2# in the reaction #Cl_2+2NaBr->2NaCl+Br_2#?
• Question #43bb5
• Question #ca60f
• After burning 6.08g of silicon and carbon mixture, 8.4g of solid product was produced. The gaseous product was let through a 100mL 15% NaOH solution (density = 1.1g/cm^3). What was the silicon and carbon composition in grams?
• Given a mass of an element, how do we find its molar quantity?
• Silicon tetrachloride (#SiCl_4#) can be prepared by heating #Si# in chlorine gas: #Si (s) + 2Cl_2(g) -> SiCl_4(l)#. In one reaction, 0.507 mole of #SiCl_4# is produced. How many moles of molecular chlorine were used in the reaction?
• A solution is made by mixing equal masses of methanol, #CH_4O#, and ethanol, #C_2H_6O#. How would you determine the mole fraction of each component to at least three significant figures?
• What is the mole fraction of solute in a 3.37 #m# aqueous solution?
• How do we determine the number of moles of carbon dioxide that result from the combustion of a particular fuel?
• How many moles of carbon dioxide are present in #5.44 × 10^22# molecules of this compound?
• What is the mole fraction of methanol in a solution that contains 6.0 mol of methanol and 3.0 mol of water? The formula for methanol is #CH_3OH#.
• Why does the neutron-to-proton ratio for stable nuclides generally increase (i e., becomes greater than one) as the number of nucleons increases?
• A solution contains 72.0 g of #HCl# and 468 g of #C_6H_6#. What is the mole fraction of benzene?
• Question #f05aa
• If 10 raise to power 21 molecules are removed from 200 mg of CO2,then how many moles of CO2 are left?(Old and urgently dear experts)
• What results when 5 moles of acid are added to stoichiometric magnesium hydroxide?
• Question #2d9ce
• According to the following reaction how many moles of carbon dioxide will be formed upon the complete reaction of 28.2 grams of carbon (graphite) with excess oxygen gas?
• According to the following reaction, how many moles of sulfur trioxide will be formed upon the complete reaction of 0.971 moles of sulfur dioxide with excess oxygen gas? sulfer dioxide (g) + oxygen (g) #-># sulfer trioxide
• How much dihydrogen will be required to reduce completely a #1.22*mol# quantity of dinitrogen gas?
• Question #64e35
• How many moles of nitrogen gas will occupy a volume of 347 mL at 6680 mmHg and 27 #"^o#C?
• Which will have the greater number of ions, 1 mol of nickel (II) or 1 mol of copper (I)?
• Question #69b1e
• What is the mole fraction of solute in a 3.89 m aqueous solution?
• Once ignited, it will produce 120 cubic feet of #O_2# at 0.5 psi, enough to support 100 persons. After balancing the equation, how do you compute the mass of #NaClO_3# required to generate the moles of gas needed to support the 100 crew members at 300K?
• For the reaction #"C"(s) + "O"_2(g) -> "CO"(g)#, how many mols of #"O"_2# would be made from #"2.04 mols"# of #"C"#?
• Question #7ea2e
• What are ratio of salt in atoms?
• Question #710f4
• What molar ratio of sodium acetate to acetic acid should be used to prepare a buffer with pH = 4.5? #K_a# acetic acid = #1.8 x 10^-5#?
• What is the smallest whole number ratio of the atoms in a compound?
• Gas, that was produced after burning 14.2g of methanol and ethanol mixture were let through lime water. 50g of precipitated out. What is the mass percent of methanol in the mixture?
• Question #d8c0c
• If #19*mol# of #H_2(g)# react with stoichiometric #N_2(g)#, what molar quantity of ammonia results?
• Question #eda23
• How do you determine the gram-formula mass of the propane gas? State the mole ratio represented in the equation of oxygen to carbon dioxide. Calculate the number of liters of water vapor produced when 25.0 liters of oxygen gas are consumed?
• Nitrogen (N) and hydrogen (H) react wth each other to produce ammonia (#NH_3#). This reactor is shown in an equation as #N_2 + 3H_2 -> 2NH_3#. What is the ratio of nitrogen atoms to hydrogen atoms in ammonia?
• Question #588ae
• If three moles zinc metal are oxidized by excess hydrochloric acid, what molar quantity of dihydrogen gas will be evolved?
• Given the reaction... #" "# #3(NH_4)_2PtCl_6(s) + Delta rarr 3Pt(s) + 2NH_4Cl(s) + 2N_2(g) +16HCl(g)# #" "# Can you address the following question?
• Can you represent the combustion of pentane by means of a stoichiometric equation?
• When octane is completely combusted, what is the whole number ratio between the dioxygen reactant, and the product hydrogens?
• When can we use the molar ratio?
• Question #20d3d
• Question #3c9dd
• Question #1f84a
• Question #e811d
• For a binary solution, why is the sum of the mole fractions, #chi_n#, of each component ALWAYS equal to ONE?
• Given the balanced equation representing the reaction between methane and oxygen: #CH_4 + 2O_2 -> CO_2 + 2H_2O#. According to this equation, what is the mole ratio of oxygen to methane?
• Explain how carbohydrates are structured in a 1:2:1 ratio. Which atom does each number in this ratio represent?
• What is the stoichiometric ratio between sodium carbonate and carbon dioxide?
• Question #e5b9f
• Question #3331e
• What is the mole ratio of #CO(g)# to #CO_2(g)# in the reaction #2CO(g) + O_2(g) -> 2CO_2(g)#?
• Given the balanced equation representing a reaction: #2CO(g) + O_2(g) -> 2CO_2(g)#. What is the mole ratio of #CO(g)# to #CO_2(g)# in this reaction?
• What is the mole ratio of #H_2O# to #H_3PO_4# in the following chemical equation? #P_4O_10 + 6H_2O -> 4H_3PO_4#?
• An hydrate of #BaCl_2# contains #0.750*mg# of the salt, and #0.0965*g# of water, how many waters in the formula #BaCl_2*n(H_2O)#?
• Question #ffcd9
• When we balance chemical equations why do we use moles?
• Question #a3017
• How many moles of sodium oxide will be produced when 10 moles of sodium react with oxygen?
• Given #NaHCO_3(aq) + HCl(aq) rarr CO_2(g)uarr + NaCl(aq) + H_2O(l)#.. what is the stoichiometric ratio between sodium chloride and sodium bicarbonate?
• Question #85a18
• In the reaction #2CO(g) + O_2(g) -> 2CO_2(g)#, what is the ratio of moles of oxygen used to moles of #CO_2# produced?
• What is the mole ratio between hydrogen #("H"_2")# and ammonia #("NH"_3")# in the chemical equation #"N"_2 + "3H"_2##rarr##"2NH"_3"#?
• What do the reactant and the product tell us about the molar ratio?
• Question #8c336
• Question #1867c
• Is the mole fraction of a solute in solution the ration of the moles of that solute to the total number of moles of solvent and solute?
• Question #004f2
• Ethyne is completely combusted as per the following equation. If #2.40 xx 10^(-1) # moles of oxygen react, how many moles of carbon dioxide form? (Answer in mol to 3 s.d. in proper scientific notation.)
• Question #89fb0
• To completely combust a 5 mole quantity of glucose, how many moles of dioxygen are required?
• What quantity of dihydrogen and dioxygen gas will result if a #6.2*mol# of water is decomposed?
• Question #fb1ea
• What are the molar ratios of reactants and products in dinitrogen reduction by dihydrogen?
• Question #57781
• Question #8c5a2
• Question #1eeff
• Which contains more molecules of water: 5.00 #cm^3# of ice at 0°C or 5.00 #cm^3# of liquid water at 0.°C? How many more? What is the ratio of the numbers of molecules in these two samples?
• What molar quantity of #PbI_2# can be formed from a #5.85*mol# quantity of #"potassium iodide"#?
• What is the molecular mass of #NH_3#?
• Question #9caeb
• How are mole ratios derived from balance equations?
• How much alumina is formed if #4.2*mol# of aluminum is oxidized?
• Question #54603
• What is the mass of #6*mol*H_2S# molecules?
• Question #eee62
• Question #19875
• How many moles of oxygen molecules, #O_2#, will react with #4.68# mol of aluminium to produce aluminium oxide, #Al_2O_3#?
• Gas mixture at ambient pressure is composed of 1.0% methane, 2.0% ethane, and 3.0% propane by volume. What is the mole fraction of each component in the mixture (on combustible basis)? What is the lower flammability limit & the upper flammability limit?
• What happens to a ratio when an excess quantity of a reactant exists?
• Question #87c07
• Question #12912
• How to calculate the number of moles of CO2 produced?
• Question #100b4
• If 2.0 mol of propane are burned (reacted with oxygen), how many moles of carbon dioxide will be produced?
• Given the following, how do you calculate the mole fractions of water and alcohol in commercial vodka?
• Question #45a2e
• How many moles of #I_2# will form 3.58 g of #NI_3#?
• Question #670ca
• What is the mole fraction of #LiCI# in a mixture of 0.564g #NaCl#, 1.52g #KCl# and 0.857g #LiCI#?
• Question #dcf5f
• Question #0cba7
• Question #09a86
• How many moles of #"C"_6"H"_12"O"_6"# will be consumed if 6 moles of #"O"_2"# are consumed?
• How many moles of H2O could be obtained by reacting 0.75 mole of H2O2 in the reaction H2O2+H2S→2H2O+S?
• Which of the following should occur when placing a certain amount of tetraphosphorus solid in the same container as dihydrogen gas, if #"8.0 mols"# of #"H"_2(g)# are present?
• Question #6584b
• When a #325*g# mass of octane is combusted, what mass of water will result?
• In the chemical equation # H_2 + Cl_2 ->2HCI# , what are the mole ratios?
• Question #53b23
• Question #489d0
• Question #4858b
• How many moles of #H_3PO_4# are in 94.052 grams of # H_3PO_4#?
• When 0.121 moles of HCl reacts with 0.399 moles of NH3, how much NH3 is consumed?
• How many moles of water are produced when #"2.15 moles"# of oxygen gas react with excess hydrogen gas?
• Question #17fa2
• Question #a1812
• Question #d54a2
• #1# mole of #"N"_2# reacts with #"Ca"# to form #"Ca"_3"N"_2#. How many moles of #"Ca"_3"N"_2# are produced?
• How many moles of #"Al"# are needed to form #3.7# moles of #"Al"_2"O"_3#?
• Using the equation #2"Al"(s) + 3"H"_2"SO"_4(aq) -> "Al"_2("SO"_4)_3(aq) + 3"H"_2(g)#. Starting with #15.0# moles of #"Al"#, determine the theoretical yield of #"H"_2# ?
• In the production of sulfuric acid, what is the limiting reagent when #1.30# moles of #"S"# react with #8.80# moles of #"HNO"_3# ?
• How many moles of #"NaOH"# were used to neutralize 0.0220 moles of #"HCl"# if the mole ratio is #"1/1"# ?
• C3H8(g)+5O2(g)→ 3CO2(g)+4H2O(l) (a) In the complete combustion of propane, how many moles of CO2(g) are produced per mole of O2(g)? (b) In the complete combustion of propane, how many moles of H2O(l) are produced per mole of O2(g)?