Determining Formula

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Questions

• Is it possible to find a molecular formula from molar mass?
• Question #75781
• What are some common mistakes students make when determining formulas?
• How can I determine the formula of an acid?
• How can I determine the chemical formula of a product?
• How can I determine the empirical formula of a compound?
• How can I determine the formula of a hydrate?
• What does the empirical formula indicate?
• A molecule with molecular weight of 180.18 g/mol is analyzed and found to contain 40.00% carbon, 6.72% hydrogen and 53.28% oxygen. What are the empirical and molecular formulas of the molecule?
• Do I need to know the number of moles of each element to determine the formula of the compound?
• How do I find the ratios between the number of moles of each element to determine the formula of the compound?
• How can I calculate the molecular weight of the empirical formula?
• The simplest formula for vitamin C is C3H4O3. Experimental data indicates that the molecular mass of vitamin C is about 180. What is the molecular formula of vitamin C?
• The simplest formula for butane is C2H5 and its molecular mass is about 60. What is the molecular formula of butane?
• The atomic weight of element X is 100 g/mol. 50 grams of X combines with 32.0 g of oxygen. What is the simplest formula for the resulting compound?
• Can I obtain the empirical formula from a elemental analysis of a sample?
• How do you convert empirical formula to molecular?
• If a compound is 86% carbon and 14% hydrogen by mass. What is the empirical formula for this compound?
• Can an empirical formula ever be a molecular formula?
• What is the empirical formula for a compound that is 17.15 % carbon, 1.44 % hydrogen, and 81.41 % fluorine?
• What is the molecular formula of a hydrocarbon that has an empirical formula of CH2 and a molar mass of 56.12 g/mol?
• What is the empirical formula of calcium sulfate?
• What is the empirical formula of caffeine?
• What is the empirical formula of melamine?
• If a compound has empirical formula of C2H3O, but has a molecular mass of 86.1 what is the molecular formula?
• What is the difference between a hydrate and an anhydrate compound?
• A pure organic substance (1.000 g) containing C, H, and O, undergoes combustion analysis. The mass of the water obtained is 0.6662 g. What is the mass percent of hydrogen in the compound? a. 3.699% b. 7.456%
• I need help with Subscripts for empirical formula, how do i know which number to multiply so that I get a whole number?
• In the combustion analysis of an unknown compound containing only carbon , hydrogen and oxygen, the grams of oxygen are found from the grams of? A) CO2 and unknown compound B) CO2,H2O and unknown compound
• Question #af77e
• Question #b0054
• Question #98cef
• The empirical formula for #CO_3# was found to have a molar mass of 120 g/mol. What is the molecular formula?
• Question #a3a16
• Question #735f3
• Question #96c21
• Question #18b16
• A hydrocarbon is burnt completely to give 3.447g of #sf(CO_2)# and 1.647g of #sf(H_2O)#. What is the empirical formula ?
• Question #ae4f9
• Question #383e6
• A student is given a sample of a green nickel sulfate hydrate. She weighs the sample in a dry covered crucible and obtains a mass of 22.326 g for the crucible?
• Question #3a6f8
• Question #85198
• Question #87503
• Calculate the empirical formula for the compound found to contain 2.82g/Na, 4.35g/Cl and 7.83g/O. My biggest question is, when you get to the step where you divide all three subscripts, by the smallest number, how do I get rid of the decimal?
• Question #f4ff2
• 9.50g of a sample of hydrated MgSO4 are heated and 4.85g of H20 are lost, how would you calculate the empirical formula of this hydrated salt?
• The elements phosphorus and bromine combine to form two binary compounds each containing 43.67% and 16.23% phosphorus, respectively. How would you determine the empirical formulas of these two compounds?
• How many atoms of oxygen are found in aluminum nitrate?
• A chloride of rhenium contains 63.6% rhenium. What is the name of this compound?
• Question #607c5
• Question #9b912
• Question #b2080
• How many hydrogen atoms are represented in the formula #(CH_3)_2CH_2#?
• A sample of a compound of xenon and fluorine contains molecules of a single type; #XeF_n#, where #n# is a whole number. If #9.03 * 10^20# of these #XeF_n#, molecules have a mass of 0.311 g, what is the value of #n#?
• What is the correct formula for platinum(VI) fluoride?
• What is the formula for sodium nitride?
• What is the formula for calcium sulfate?
• What is the formula for calcium hydroxide?
• What is the formula for sodium sulfide?
• What is the formula for magnesium sulfate heptahydrate?
• What is the formula for copper(I) oxide?
• What is the formula for iron(II) oxide?
• Given the incomplete equation for the combustion of ethane, #2C_2H_6 + 7O_2 -> 4CO_2 + 6__#, what is the formula of the missing product?
• What is the formula for barium hydroxide?
• How do you write the formula for calcium fluoride?
• How do you write the formula for magnesium oxide?
• A certain compound is made up of one phosphorus (P) atom, three chlorine (Cl) atoms, and one oxygen (O) atom. What is the chemical formula of this compound?
• Oxide ions are also formed when aluminium oxide is dissolved. What is the formula of an oxide ion?
• What is the formula of aluminum carbonate?
• What is the simplest formula for chromium (II) and selenide?
• What is the formula for sodium sulfate?
• What is the chemical formula for chromium(II) bromide?
• What formula represents lead(ll) chromate?
• What is the chemical formula for copper(Il) hydroxide?
• How many carbons are there in #(CH_3)_2CHOH#?
• A #4.500*mol# quantity of stuff has a mass of #232.0*g#. What is the molar mass of the stuff?
• 6.25 grams of pure iron are allowed to react with oxygen to form an oxide. If the product weighs 14.31 grams, find the simplest formula of the compound?
• Question #ce153
• A compound has a molar mass of approximately 56 #g.mol^(-1)#. Which compound might this be? (multiple choice)
• Question #dee37
• What is the hydrate formula for something that is .0243 mol #BaI_2# and .098 mol #H_2O#?
• Question #eb1dc
• Question #4ed88
• If 4.04 g of #N# combine with 11.46 g #O# to produce a compound with a molar mass of 108.0 g/mol, what is the molecular formula of this compound?
• A 7.96 gram sample of silver reacts with oxygen to form 8.55 gram of the metal oxide. What is the formula of the oxide?
• Question #c0a3d
• The vd for a certain gas is 70. If the molecular formula for this gas is #("CO")_x#, then what is #x#?
• Question #2f5be
• Question #60fe9
• How many atoms, and of what type, are present in a #222*g# mass of #"calcium chloride"#?
• What is the molecular formula of a compound?
• How many carbon atoms are represented by #(C_2H_5)_2NCH_3#?
• An hydrocarbon with a #0.66*g# mass was completely combusted to give a #1.32*g# mass of carbon dioxide, and a #2.70*g# of water. How do these data support the idea of the conservation of mass?
• Question #ab1e9
• A sample of calcium nitrate, #Ca(NO_3)_2#, with a formula weight of 164 g/mol, has #5.00 x 10^25# atoms of oxygen. How many kilograms of #Ca(NO_3)_2# are present?
• Asample of a compound contains 0.150 mol C, 0.105 mole H, 0.0300 mol O, and 0.0450 mol N. The molecular mass of the compound is found to be 402 g/mol. What is the compound's chemical formula?
• The analysis of an organic compound showed that it contains 0.175 mol C, 0.140 mol H, and 0.035 mol N. Its molecular is about 160 g/mol. What is the subscript on in the chemical formula?
• Question #bd6ed
• What is the formula of a hydrogen molecule?
• What is the formula of magnesium oxide?
• Question #343ff
• Question #4cd61
• Question #b8a3e
• Question #18870
• What is the chemical formula for Xantium hydroxide?
• What does a chemical formula tell?
• Question #fb914
• Question #7fcaa
• How do you draw the skeletal formula for butane?
• Question #292bf
• What is the chemical formula for the combination of iodine and hydrogen?
• What is the chemical formula for the combination of nitrogen and oxygen?
• What is the chemical formula for the combination of lead (II) and sulfer?
• What is the chemical formula for the combination of aluminum and phosphorous?
• What is the chemical formula for the combination of cobalt (II) and chlorine?
• What is the formula for iron (II) sulfite?
• What is the formula weight of silver chromate #(Ag_2CrO_4)# in amu?
• How do you determine if a formula represents a molecular compound?
• What is the formula for nitrogen dioxide?
• How many sodium atoms are represented in the formula #7Na_3PO_4#?
• What is the chemical formula for a dinitrogen trioxide molecule?
• When a chemical symbol in a chemical formula has no subscript, what does it mean?
• What is the chemical formula of baking soda?
• What is the chemical formula of charcoal?
• What is represented by the symbol #"C"l^-#?
• How would you determine the formula and molar mass of aluminum sulfide?
• How do you determine the formula and molar mass of silver cyanide?
• What is the formula and molar mass of beryllium chloride?
• How do you determine the formula and molar mass of lead II sulfate?
• Question #dc7c8
• What is the formula for Diclofenac Sodium?
• What is the formula for ammonium nitrate?
• How do you determine the formula for aluminium hydroxide?
• How do you determine the formula weight of #CaCNO_3#?
• What is the formula for selenium dioxide?
• What is the formula for copper ii carbonate?
• What is the formula for Potassium hydroxide?
• What is the formula for calcium oxide?
• What is the formula for sulfer hexafluoride?
• Iron pyrite (fool's gold) is iron (lI) sulfide. What is its formula?
• What is the formula for hydrosulfuric acid?
• What is the formula for potassium sulfite?
• A compound contains 1.10 mol of K, 055 mol of Te, and 1.65 mol O. What is the simplest formula of this compound?
• 5. Lithium nitride has the chemical formula #Li_3N#. Rubidium is in the same chemical family as lithium. What is the formula of rubidium nitride?
• What is the formula for Calcium Carbonate?
• Question #3f2eb
• What is the formula for calcium bisulfate?
• What is the formula for acidic oxide?
• A substance has an empirical formula of #CH_2# and a molar mass of 56 grams per mole. What is the molecular formula for this compound?
• A metallic element #X# forms a carbonate with the formula #X(CO_3)_2#. What would the corresponding formula be of the fluoride compound of element #X#?
• What is the formula for manganese iV bicarbonate?
• What is the formula of aluminum sulfate?
• What is the formula of lead (II) nitrate?
• To determine the formula of a new substance, what is one of the first steps one must take?
• What is the name and formula for the compound formed from magnesium, 2+, and phosphide, 3-, ions?
• The chemical formula #CO_2#, represents a molecule that contains how many carbon and oxygen atoms?
• Chemical formulas use what to tell how many atoms of that element are in one unit of that compound?
• What is the formula for the compound that forms when magnesium bonds with phosphorus?
• What is the cesium phosphate formula?
• What is the chemical formula of sulphur trioxide?
• Fluorine and lithium react together to form lithium compound that contains #F^-# and #Li^+# ions. What is the formula of the compound formed?
• How do you write the formula for the following compounds: Barium chloride dihydrate and Sodium sulfite heptahydrate?
• How do you find the formula units in 2.6 g of lithium bromide?
• What does a subscript following an element in a chemical formula mean?
• Difficult molecular formula question? (See below)
• Question #aa570
• Question #6a3c8
• Question #ac033
• Question #78c3c
• Question #8462f
• What happens if you change a subscript in a correctly written chemical formula?
• What is the 2-methyl cyclopentanone condensed formula?
• What is the formula for this reaction: Sulfuric acid reacts with potassium hydroxide to produce potassium sulfate and water?
• What is the whole number that appears before a formula in an equation?
• What information do you need to determine the chemical formula of an unknown compound?
• What is the propane gas chemical formula?
• How many total atoms are represented by propanes chemical formula?
• How would you express Tin (IV) oxide as a chemical formula?
• What would the chemical formula of the compound look like if you combined Calcium and Iodine?
• How atoms of hydrogen are there in the formula #C_2H_5OH#?
• A #5.5*g# mass of a chromium chloride compound contains #1.82*g# of metal. What is its #"empirical formula"#?
• What is the formula for the compound sulfur (II) chloride?
• What is the formula of a molecular compound?
• What is the formula for the compound dinitrogen pentoxide?
• What would changing a subscript in a correctly written chemical formula do?
• What is the chemical formula of graphite?
• What is the chemical formula of methane?
• Question #95a18
• What is the arsenate formula?
• Question #876a6
• Question #67709
• Question #86b83
• What is the general formula of an electrolyte?
• How does the experiment establish the formula of magnesium oxide...?
• Question #d0643
• What is the number placed below an elements symbol in a chemical formula?
• Question #383ec
• Question #30180
• What is the formula for caloric acid?
• What is the oxidation number of phosphorus in the salt #Zr_3P_4O_16#?
• For a solution with benzene as the solvent, what is the molality (with respect to the solute) if the solution has a solute mol fraction of #0.2#?
• What is the equation for: Hydrochloric acid is added to diammine silver (l) chloride?
• What is the formula of tin (ll) chromate?
• What is the formula of tin (1) chromate?
• The chromate ion has the formula #CrO_4^(2-)# What is the formula of tin (II) chromate?
• When ammonium sulfate is heated with solution X, ammonia gas is given off. Is solution X HCl or NaOH?
• If a #2.96*g# mass of potassium chloride, and a #1.92*g# mass of dioxygen gas react, what mass of #"potassium chlorate"# results?
• What is the formula for Lithium phosphate?
• What is the formula for Hydroarsenic acid?
• What does formula mean?
• Question #963da
• Question #1c383
• Question #07b70
• What are the empirical and molecular formulae of an organic species, whose percentage composition is: #C:38.7%;H:9.7%;O,51.6%#? A #0.93*g# mass of this material occupies #0.336*L# at #"STP"#.
• What part of the chemical formula indicates the number of molecules or atoms involved?
• What is the chemical formula of copper oxide?
• What is the chemical formula for magnesium hydroxide?
• What is the chemical formula for hydrogen oxide?
• Question #ab304
• Question #3145d
• A mixture containing 10 mL of a nitrogen oxide and 30 ml of hydrogen reacts completely to form 10 mL of nitrogen. What is the formula for the nitrogen oxide?
• What is the silver carbonate formula?
• What is the chemical formula for lead (IV) oxide?
• When oxygen combines with any alkali metal, M, what is the formula of the compound produced usually?
• Question #8d3dd
• Find the number of waters of hydration (x) in this sample of Epsom salts?
• Question #80271
• Question #a418b
• What is the empirical formula of an #"aluminum sulfide"#, for which a mass of #2.03*g# contains a #0.73*g# mass of #"aluminum"#?
• In an inorganic metal salt that contains water molecules, are the water molecules likely to coordinate to the metal centre?
• A sample of a pure substance with a mass of 0.963g contains 4.84x1-^-3 moles. What is the formula weight of the substance comprising the sample?
• Question #a065d
• How many nitrate ions does a metal draft in to form a metal nitrate?
• Question #5dbfe
• Question #3ed00
• Question #c7336
• Question #763a2
• #A#, whose formula is #C_6H_12#, and which contains a chiral centre, is oxidized by permanganate ion to give methane gas, and #"2-methylbutanoic acid"#. What is #A#?
• Question #2dda1
• Question #b61a4
• The crystalline salt Na2SO4.xH2O on heating loses 55.5% of its weight the formula of crystalline salt is??? a)Na2SO4.5H2O b)Na2SO4.7H2O c)Na2SO4.2H2O d)Na2SO4.10H2O e)Na2SO4.6H2O
• If a binary metal halide whose #%Cl# is #60.68%#, what is the likely salt?
• A carbon compound contains 12.8% of carbon, 2.1% of hydrogen and 85.1% of bromine. The molecular weight of the compound is 187.9. What is the molecular formula of the compound? (Atomic weight: H = 1.008, C = 12.0, Br = 79.9)
• Question #97c8f
• Question #b785a
• Question #9c0f3
• Question #d46e7
• Question #ce84d
• You weigh a sample of #"CusO"_4 * x"H"_2"O"# and find that it has a mass of #"6.45 g"#. After you heat the sample, you find that the mass of the anhydrous salt is #"4.82 g"#. What is the value of #x# ?
• #"Mg"("HSO"_3)_2# decomposes into a solid #"X"#, #"H"_2"O"# vapor, and #"SO"_2# gas. If #"186 g"# of #"Mg"("HSO"_3)_2# decomposes completely and leaves behind #"40 g"# of solid #"X"#, what is the identity of #"X"#?
• A mass of #"18 g"# of a compound #"M"_2"CO"_3 * x"H"_2"O"# #(M_ "M metal" = "24 g/mol")# is dissolved in #"500 mL"# of water and titrated against a #"0.5-M"# #"HCl"# solution. If the volume of #"HCl"# consumed is #"500 mL"#, the value of #x# is?
• Question #4e6bd
• A #"140.5-g"# sample of #"NiSO"_4 * x "H"_2"O"# was heated until no further decrease in mass was observed. The mass of the anhydrous (dry) salt is #"77.5 g"#. Determine the value of #x# in the formula?
• The equivalent weight of metal is triple to that of oxygen. What is the ratio of weight of its oxide to that of metal?