Calculate the actual atomic mass of 65Cu. Mg(CO3) Zn(NO3)2. How many moles of molecules are contained in 78.4 l of Neon at STP? 65Cu = 64.9278 amu 7) … Molar Mass Practice Worksheet Find the molar masses of the following compounds: 1) NaBr 2) PbSO 4 3) Ca(OH) 2 4) Na 3PO 4 5) (NH 4) 2CO 3 6) C 6H 12O 6 7) Fe 3(PO 4) 2 8) (NH 4) 2S 9) Zn(C 2H 3O 2) 2 10) AgF . 1 mole of H 2 O = ? Worksheet 7 - Ideal Gas Law I. How many oxygen molecules … Molar masses III. Updated: Feb 22, 2018. docx, 15 KB. CH3O . The unknown molar mass should be calculated from Equation 11 (below). View US version. To find mass in grams To find # of particles # of moles x molar mass # of moles x 6.02x1023 1. 5) BF3 . Gram-mole: The mass of one mole, or 6.02 × 10 23 particles, expressed in grams. 2) KOH . Sign In. Formula Weight: The weight of a molecular compound or an ionic compound. About this resource. Empirical formulas. Molar Mass Worksheet.doc. Formula: Molar mass: Answer: You need 2.5 moles of aluminum for an experiment. 2. Moles, Grams and Molecules Worksheet. The value of R varies with the units chosen: R = 0.08206 L atm / mol K 5 H2O were heated to drive off all the water, the anhydrous salt CuSO4 would weigh 63.5 g + 32.1 g + 4 (16.0 g) = 159.6 g, which is the mass of one mole of CuSO4. Percentage composition, Empirical & Molecular Formulas. Answer: 128 g/mole; C8H4N2 5. Cd(NO3)2. mol-1”, depending on how your teacher likes to see it written. Determine the mass of. Worksheet 2 – Density and Molar Mass via Ideal Gas Law 1. 4) C2H6O2 . 35.25 g CO2 and 14.65 g SO2 are produced. Each equality can be written as a set of two conversion factors. Note that the NUMBER is always the same, but the MASS is very different! 9) Zn(C2H3O2)2. Molar mass worksheet. How many molecules are contained in 134.5 l of O2 at STP? What is the molar mass and molecular formula of a nondissociating compound whose empirical formula is C4H2N , if 3.84 g of the compound in 500. g benzene give a freezing point depression of 0.307 ° C? Write the units! Analysis of hydrogen showed that the compound contains 8.514 % hydrogen by mass. 7. Use your Periodic Table, calculator, and Avogadro’s number (6.02x1023) to help. Percentage composition & molecular formula. 10) H3PO4 . Mole to Grams, Grams to Moles Conversions Worksheet What are the molecular weights of the following compounds? X3Y . Liquids A and B form an ideal solution. Analysis of a sample of the compound indicates that it contains 0.606g N and 1.390g O. Exactly 250 mL of a gas at STP weighs 0.291g. How many moles are equal to 89.23 g of calcium oxide, CaO? Relative formula mass worksheet. 6) A compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole. AlCl3 (NH4)2(SO4) Ni3(PO4)2. How many moles of ammonia are in 1.20 ( 1025 molecules of ammonia? Find the number of moles of argon in 452 g of argon. Period: Molecular Mass Worksheet #1. 352 g/mol. Determine the molecular formula of a compound with an empirical formula of NH2 and a formula mass of 32.06 g/mol. What is the molecular formula of this compound? Categories & Ages. Find the molar masses of the following compounds: 1) NaBr. Chemistry; Chemistry / Analysis; 14 … Moles and Gasoline . 2) PbSO4. docx, 16 KB. 67.8 g/mol. 2.5 L soln x 1.06 mol Li 3 PO 4 x 115.79g Li 3 PO 4 = 310 g Li 3 PO 4 1 L soln 1 mol Li 3 PO 4. (Here’s how to find the answers. Period: Worksheet: Molar Volume/Molar Mass #1. 4. Mole to Grams, Grams to Moles Conversions Worksheet. MOLE WORKSHEET NAME: DATE: 1. 5) X39Y13 . Mole Calculations 1. How many … 3) BeCl2 . 0.0125 moles of dinitrogen pentoxide _____ N2O5 = (2 x 14) + (5 x 16) = 108 g/mol. Extra Credit: Pg 304-305 Q. Show your work. 1 mol = g-formula-mass (periodic table) 1 mol = 22.4 L for a gas at STP. Info. 28.50 g sample of a compound of carbon, sulfur, hydrogen, and oxygen is burned. 162.3 g/mol. Molar Mass Worksheet W 339 Everett Community College Tutoring Center Student Support Services Program Find the molar masses of the following compounds: 1) LiI 2) PbCO 4 3) Mg(OH) 2 4) K 3 PO 4 5) (NH 4) 3 PO 4 6) C 6 H 12 O 6 7) Fe 2 (SO 4) 3 8) Na 3 P 9) AgF 10) NH 4 C 2 H 3 O 2. If you evaporated 250. mL of a 3.5 M solution of iron (II) nitrite, what mass of iron (II) nitrite would you recover? There are three mole equalities. “Molar Mass – 1 step” – Wksh #2. 2.50 moles of aluminum hydroxide _____ Al(OH)3 = 27 + (3 x 16) + (3 x 1) = 78 g/mol . 2. docx, 16 KB. 1) Rubidium is a soft, silvery-white metal that has two common isotopes, 85Rb and 87Rb. Relative-formula-mass-answer-sheet. 6) C6H12O6. What mass of lithium phosphate would you mass to make 2.5 liter of 1.06 M lithium phosphate solution? Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. The molar mass of a compound is 92g/mol. The average atomic mass between these two isotopes is 63.546 amu. WO2 . 4. How many moles of magnesium is 3.01 x 1022 atoms of magnesium? Determine its empirical and molecular formula if its molar mass is 181.313 g/mol and it contains 39.7458 % C, 2.77956 % H, 13.4050 % Mg, and 44.0697 % Br. 6) CCl2F2 . 7) A compound with an empirical … a. Find its molecular formula. They are: 1. mole = 6.02 x 1023 particles. Molar Mass Pratice - Displaying top 8 worksheets found for this concept.. 64.1 g/mol. If ... atomic mass of 62.9298 amu and an abundance of 69.09%. Molar Mass Worksheet – Answer Key. Convert 5.3 x 1025 molecules of CO 2 to moles. Relative formula mass worksheet. Conversion Factor: A ratio equal to one that expresses the same quantity in two different ways. Butane has the molecular formula C 4 H 10. Average Atomic Mass Worksheet: show all work. 8) UF6 . EMPIRICAL AND MOLECULAR FORMULA WORKSHEET Mole calculations II. 1) C6H6 . 2. Solutions to the Molar Mass Practice Worksheet: Important note to students: All of the units given here are “grams per mole”, which may be abbreviated as “g/mol”, “grams/mol”, or “g . Formula Unit: The representative particle of an ionic compound. Cu2(CrO4) Na(ClO3) Na2S. Check your notes for help with molar mass! 1. Directions: Determine the molar mass of the following substances. … This resource is designed for UK teachers. What is the mass of 5 moles of Fe2O3 ? 13) Pb(NO3)2 . 3) WO2 . Using the mass calculated in Calculation #7 and the number of moles calculated in Calculation #12, calculate the experimental molar mass of butane. There are three definitions (equalities) of mole. Jun 10, 2020 - Molar Mass Worksheet - Molar Mass Worksheet, Mole Worksheets Google Docs 5. Empirical & molecular formulas. to perform the following mole conversions. 1) NaOH 2) H3PO4 3) H2O 4) Mn2Se7. Gram to Particle Conversions (two step conversions using molar mass and Avogadro’s number) 1. Calculating Molar Mass Worksheet - Editable by Techno Teacher Store #399368 Molar Mass and Mole Calculations Worksheet #399369 Molar Mass Worksheet – Answer Key #399370 4. 71 g/mol. 7) Fe3(PO4)2. Name_ Date_ Per_ Mole to Grams, Grams to Moles Conversions Worksheet What are the molar mass … 5) Ans: 80.6 % 6. HCl K 2CO 3 Ca(OH) 2 Na 3PO 4 Part 2: Mole Conversions Work each of the following problems. How many grams are in 3.45 moles of CO 2? Calculate the molar masses of the following chemicals: 1) Cl2 . 5 H2O is: 63.5 g + 32.1 g + 4 (16.0 g) + [ 5 (18.0 g) ] = 249.6 g. If a 249.6 g sample of CuSO4 . 13. 331.2 g/mol. 3. K2CO3 Molar Mass Worksheet Key Water (H 2O) … ? 3) Ca(OH)2. 4) FeCl3 . Grams and molecules II. 6. 4) Na3PO4. C4H9 . atoms Al = 6.2 mol Al ! The composition of the gas is as follows: C, 92.24%, H, 7.76%. 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