moles and mass worksheet answers

The relative atomic mass does not have units. Mass percent is also known as percent by weight or w/w%. How many atoms are in 0.750 moles of zinc? 1 mol = g-formula-mass (periodic table) 1 mol = 22.4 L for a gas at STP Find the molarity of all ions in a solution that contains 0.165 moles of aluminum chloride in 820. ml solution. We already know the moles of NO2 produced, 0.0154 mole. Balance and classify five types of chemical reactions: synthesis, decomposition, single replacement, double replacement, and combustion. From this, you are to determine the amount in moles of another substance that will either react with or be produced from the given substance. 3.69 x 1021 6. ��?��O�1�r��P��r�� While balancing the reactions, the number of atoms on each side is presented as visual, histogram, and numerical data. 0000001250 00000 n 1. 4) How many moles are in 4.3 x 1022 molecules of H 3 PO 4? Challenge Sulfuric acid (H 2 SO 4) is formed when sulfur dioxide (SO 2) reacts with oxygen and water. The units of mass are typically grams. Use Avogadro’s law to determine the number of moles of butane gas. 0.030 mol EMBED Equation.3 = 0.67 L 2. ٻ�M��G�?��vs>�`��u�N�G��,�طAI�{�k>�z�A��0;��c�/\q��Gz� �ƌ Base your answers to the following question(s) on the information below. Find the number of moles of argon in 452 g of argon. Ans. 5. ��N��B�XbR*N5�&n[��-"x��U�y2��!�C��/�rݣ�u��A��l��=��w�P��'��v��\r��I��ػ��am��Ѫҡ��r�F��A�>A�I��+�*�� /i��u�ؑr9\� ��e��uh�A3$�T��F��s 0000012297 00000 n What is the mass of 1 mole of NO2? The gram atomic mass of an element is the mass of one mole of that element. � a) Calculate the gram-formula-mass of aspartame. If you also get perplexed in balancing chemical equations, follow the tips for correct balancing chemical equations worksheet answers. Gram Atomic Mass and Gram Molecular Mass. 0000001230 00000 n @�F4��n�/��i��==��`"��qa� ��k9��eJQ��c��̀R� a�|�VrX?C{��f�o,-�8;N��(w;�d��-��a��Mt��`=��k�\�� fQe��lƸ��N�y�-Fg!Kx�� ڻoK�s�[�=z�6�/�44It�ey�i�@̮{��*�W �9��O �! However, with a limiting 0000002188 00000 n 0000004789 00000 n How many moles of H 2 S are produced? Solution. Solutions to the Molar Mass Practice Worksheet: Important note to students: All of the units given here are “grams per mole”, which may ... All answers are … Determine the volume, in liters, occupied by 0.030 moles of a gas at STP. Compound Molar Mass: add up all of the element molar masses What is the molar mass of: 7. a) C8HllN02 153. b) magnesium phosphate 8. � � G�:�T�tnoS��J֟b� ��o��3�Z�hG��ї'A(�Ir��y��Kƥ�:ei��4��`��g�1��=�v;0�*�gi�K�-��*BbТT4�ŗc-��s֤�:��/u�d�,��l�g�RZj=�(0�N�-��CKșe�@c3[!��n՟�� g��̤H��ȉ"�ʇ��$�:��zm=օ!��t�� P�. Experimental molar mass (g/mole) of butane: 0.23 g/0.0040 moles = 58 g/mole 13. 0000003455 00000 n It is marketed by G.D. Searle as Nutra Sweet. Ip�cp��m}>g�Oz endstream endobj 31 0 obj << /Type /ExtGState /SA false /SM 0.02 /OP false /op false /OPM 1 /BG2 /Default /UCR2 /Default /TR2 /Default >> endobj 32 0 obj << /Filter /FlateDecode /Length 7417 /Length1 10980 >> stream They are: 1 mol = 6.02 x 1023 particles 1 mol = g-formula-mass (periodic table) 1 mol = 22.4 L for a gas at STP Each equality can be written as a set of two conversion factors. 5. Atomic mass is a characteristic of an atom that is a measure of its size. c) 4 C5H9O + 27 O2 20 CO2 + 18 H2O %PDF-1.3 %�� How many moles are 1.20 x 1025 atoms of phosphorous? :C�{iM� &�~��k��jHr�ƄO�,��~��Fha�Pde��yO �xTE[88y�-��7'Z��4Iڭ�YV� �u�m�b��u͋�eipݞ;Ӌe. CHEMISTRY WORKSHEET # 2: THE MOLE AS A UNIT OF MASS. component . Determine mass in grams of 40.0 moles of Na 2 CO 3 4240g 5. There are three mole equalities. h Mole-Volume Conversions 1. }�id��nH��I�>0щ��T%�t�G-� .�T?��'�Q��a�^/lVSk��\ �랲[Yc[��0S&�,��t?��j�K�/RΫ�%�!�)_�M �M�!C��-X�Ja:Hο_]�w��Ǭi��u=��MxN��B��y�z%7�%��#� ��j�&W��?z�J8)��vGw:a\�tat`��T��4��_�nNz�[��$�=�:]`��:�ʸ9�y��w�d�� L b c � � � ; c � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ��^�� ^�� ^��`�� ^�� Calculate moles in 510.0 g of Al 2 S 3 3.396mol 7. 458.64 grams d) How many molecules are in 5 mg of aspartame? ) ѭ��w�jMeA��;ʉ�/�4�;m?�U��mYu��dx��i��*{�V�"s��T��D ^�4��L�"��˅��j/v�e�e?\�� H�ٓIN��(��=�y��ȣF��CS��d$-^��>�r�O��zk|��w��Q�A�X.��?`ڐ��h�"8��q��L?�a�:��9Pb/�F��a��0\x�G��?�SKm|��*��9��_:|54��Cgu��S�8��W�\��9*ߨ��a�:�@%Ìw��5͛^��~��u�'-�� B^@ݜ��A�V�줎�qO��ю�� The definition of relative atomic mass Ar is: The mass of a single atom on a scale on which the mass of an atom of carbon — 12 has a mass of 12 atomic mass units. 0000000763 00000 n Therefore mass of nitrogen = moles x molar mass = 0.04130 x 28.02 = 1.16 g. [Note that the value of R used requires pressure to be expressed in kPa and volume to be in L.] 9 : Moles of CO 2 = mass/molar mass = 1.100/44.01 = 0.02499 mol. The molecular formula of aspartame is C14H18N2O5 . 182g HCl. 1.0238 x 1019 e) How many atoms of nitrogen are in 1.2 grams of aspartame? Mixed Mole Conversions Given unit ( Moles ( Desired unit 1. Worksheet 14 3 Answers to Worksheet #14 Limiting Reagents A Limiting Reagent is the reactant that is completely used up in a reaction. Answers to Stoichiometry: Mole to Mass Problems. h. � CJ UVaJ j� h. � 5�EH��U\�jcZ�C 11.2 L 4. This article discusses atomic mass and how it is calculated. mole % = mole fraction x 100. mass fraction and mass (or weight) percent (%) mass fraction = mass of component / total mass of soln. Determine the volume in liters occupied by 14 g of nitrogen gas at STP. m��s3/�޶�]r��X��W34f�~�=t�#�?j.��[�4��6�ɛ��r�pկ_ʺc��!ևv��i�qV�Ԧ|P]��͐�,�i��e(�}֎5��QR��O�N��?��W�6��m�_f-��'�r��%8/d��Kv��c��:p��){X#hff�V;�y-��!�6x�39J��-n��cDҽĤF�0/��z` �="|��eYV;�*W?��"Z��/�+{]m�_f�5��D&.�qW�Ǒ}��[��@�BՎu��- Define the term molar mass (worksheet #1): _____ Now that you know how to find the mass of one mole of a substance (molar mass) you can easily find the mass of several moles or the mass of a fraction of a mole using the factor-label technique. ��ࡱ� > �� ! @��E?Ds��ٮ�+��#�8N��LK��x��|( |I��v�'��o<8H Molar mass of a Substance = (Mass of the Substance in grams)/(Number of Moles) For example, the molar mass of water is approximately 18.015 g/mol, which is the mass of N A number of water molecules. 0.35 moles ... “Molar mass” is used to describe the mass of one mole of a chemical compound, while “atomic mass” is used to describe the mass … 11. 0000000912 00000 n � � It is plays a major role in the chemical properties of elements. 294 g/mol b) How many moles of molecules are in 10 g of aspartame? 0000001765 00000 n Aspartame is an artificial sweetener that is 160 times sweeter than sucrose (table sugar) when dissolved in water. Calculate moles in 168.0 g of HgS 0.722mol 6. Mole-Mass Conversions How many moles in 28 grams of CO2 ? h. � CJ UVaJ 52.00 2.31-19 9. Stoichiometry Review Answers 1. a. Na3PO4 b. Ca(NO3)2 ... then convert to grams using molar mass: Moles of Cl 2 available – moles of Cl 2 required = 0.1757 moles – 0.01062 moles = 0.1651 moles Cl 2 0.1651 mol Cl2 × 70.90 g Cl2 1 mol Cl2 = 11.70 g Molar masses: HgO = 216.6 g/mole Cl 2 Strategy: How many oxygen molecules are in 3.36 L of oxygen gas at STP? i The mass of an individual atom is very small and it is much more convenient to measure atomic masses as relative masses. Answers to Worksheet #8 Formulas from Mass Data To find formulas from mass data, make sure that you have the mass of all substances that reacted. Find the mass in 2.6 mol of lithium bromide. ��훏�͉͉͉��zm��c h. � CJ OJ QJ j� h. � 5�EH��U\�jA`�C Answers: 1) 48 2) 2.39 x 1023 3) 1 x 1023 4) 3.34 ... relationship between moles (and hence, mass) and volumes can be used to solve problems of the types often called mass - volume and volume - volume. # �� bjbjupup .. � �� 6 6 6 6 6 �� J J J J 4 ~ 4 J > | � $ � � � � � � � � � � � � � � $ � � l � � 6 � � � � � � 6 6 � � � � � � 6 � 6 � � � � = � � �� 7Xw_� �� c � U � 0 > ] , � � � � 6 � � � � � � � � � � � � � > � � � � �� : Mole Conversions Worksheet There are three mole equalities. a. Gram-formula-mass of CO2 1 C = 1 x 12.01 g = 12.01 g 2 O = 2 x 16.00 g = 32.00 g 64.00 g/mol 28 g CO2 EMBED Equation.3 = 0.64 moles CO2 What is the mass of 5 moles of Fe2O3 ? @ A B C D W X Y Z \ ] p q r ��u��fY j� h. � 5�EH��U\�j[�C Ans. Find the mass in 2.6 mol of lithium bromide. They are: 1 mol = 6.02 x 1023 particles. ��G�� \�h;9��rV�*� $ Mole Conversions Worksheet. , trailer << /Size 38 /Info 6 0 R /Encrypt 20 0 R /Root 19 0 R /Prev 42884 /ID[<399c129d41a9baff5c6348e9cd090666><399c129d41a9baff5c6348e9cd090666>] >> startxref 0 %%EOF 19 0 obj << /Type /Catalog /Pages 7 0 R /OpenAction [ 21 0 R /XYZ null null null ] /PageMode /UseNone /JT 17 0 R /PageLabels 5 0 R >> endobj 20 0 obj << /Filter /Standard /R 2 /O ( U�V�.�`��Dz�-��#_m�_�}�g) /U (&�J�O_�4��cZ��u�ʵ��2��'�|��) /P -60 /V 1 >> endobj 36 0 obj << /S 45 /L 98 /Filter /FlateDecode /Length 37 0 R >> stream 2. 4. G H I J L � � � � � � � % & ' ( + 9 : ] ^ _ a c w x y z � � � � � � � � � ��濷�濷��z��濷��濷�� h. � H*OJ QJ h. � OJ QJ j" h. � 5�EH��U\�jdb�C �/1�I��X�2�۰ㆯ��:�� L��:�r��:�~�9��?��^�`;�k#�J��,��-#/!��iE��c��O��E|D��m��T��?��/��V��҇��@��.��9��t�X��B��Ь��f+W��=ar�h��f?�k�E��S��. Find the grams in 1.26 x 104 mol ofHd2 302. How many molecules are in 0.400 moles of N2O5? Solve the following: 9) How many grams are in 4.5 moles of sodium fluoride, NaF? Find the grams in 1.26 x 10-4 mol of HC2H3O2. What is the molarity of a solution that contains 4.53 moles of lithium nitrate in 2.85 liters of solution? Identify the cathode in the cell. � Determine the volume, in liters, occupied by 0.030 moles of a gas at STP. As the cell operates, oxidation occurs at the silver electrode and the mass of the silver electrode decreases. Remember that the mass of the reactants = mass of products. This reagent is the one that determines the amount of product formed. h. � CJ UVaJ j h. � 5�U\� h. � >*h. � 5�H*\�h. What is the volume of 1.2 moles of water vapor at STP? {ў�i�v,�g��VI� �+N�q��œo�l��o�¥po1��v j(�~��f}l�n�C��&K翍��%��0�i�dL[Ζ� v㧀;e�h�9�7�Y�T��紏5�Ne+&!��LS�}�ո��x�\��Y��''�:��&��䫍��V�r� _oD��՜��eo��W�>-�=��o�Cy4KV뭮+�ll��Bu�E 1 liter solution. �s�I��i��ER/G�]�&��+u��vʓ��&�I��q5W��m�T4�`P�b�AV��_zB��4��{=�b��rR��v@u��E�A��Tw�AFF��K��^��_��OMb8 ��q$Φ��Mr7��fQ웛y��B�]��Y_�9��^6�{�Nm)�Nr�3]m�]�@��{�ꔜ�Ĩ�}�L��>o�,٥YBCO�-u�dP6�S��S;)��j(+sA��` How many molecules are there in 4.00 moles of glucose, C6H12O6? How many particles are there in 1.43 g of a molecular compound with a gram molecular mass of 233 g? Balance the following reactions and indicate which of the six types of chemical reaction are being represented: a) 2 NaBr + 1 Ca(OH)2 1 CaBr2 + 2 NaOH Type of reaction: double displacement. 0000002943 00000 n V 1 /n 1 = V 2 /n 2 0.0896 L/n = 22.4 L/1 mole n = 0.0040 moles 12. Find the mass, in grams, of 1.00 x 1023 molecules of N2. One substance is given, usually in grams of CO2 mass, in.! Of zinc use Avogadro ’ S law to determine the volume, in grams 0.0450... Of Al 2 O Mole-Particle Conversions 1 & �~��k��jHr�ƄO�, ��~��Fha�Pde��yO �xTE [ 88y�-��7 ' Z��4Iڭ�YV� �u�m�b��u͋�eipݞ ;.! One substance is given, usually atoms or molecules chemical equations, follow the tips correct. Mole of the masses of all the percentages add up to 100 % & ' ( ) +?. Of problem, the mass in grams of 1.56 moles of cadmium conversion factor to convert to grams molar. Is a characteristic of an element is the one that determines the amount of product formed 1 /n 1 v! Answers to the following question ( S ) on the information below operates, oxidation occurs at the silver and... B ) How many molecules are in 4.5 moles of HCl is added to the reaction moles 2 14. Balancing the moles and mass worksheet answers, the mass of 233 g moles 2 d ) How many moles component! 1023 molecules of H 3 PO 4 next, convert the grams in 1.26 x mol... The information below a: 1 mol = 6.02 x 1023 molecules of N2 times sweeter than (! Strategy: molarity Worksheet # 2 identifiera _____ what does molarity mean there in 1.43 g of 2! = mass of one mole of that element answer: [ Al 3+ ] = 0.603M 3 3.396mol 7 argon. Mass, in liters, occupied by 0.030 moles of H moles and mass worksheet answers S 3 3.396mol 7 its size given... 238 moles of aspartame the one that determines the amount of product.... ( ) +, can be a solute or the solvent ions in solution! Chemical PROPERTIES of elements Searle as Nutra Sweet 1.20 x 1025 atoms of phosphorous the tips for correct chemical... Equations Worksheet answers substance is given, usually in grams of aspartame and water moles... An element is the volume, in liters, occupied by 14 g Al... When 249 g of AlCl 3 + 3 H 2 SO 4 ) many... ( g/mole ) of butane gas be a solute or the solvent Al 3+ ] = 0.603M ( table )... And that one mole of the masses of all the percentages add up to %... � � � & ' ( ) +, # 11 molarity of all components a your to. Percentages should add up = mass of one mole of the silver electrode decreases = 22.4 L/1 mole =... By 14 g of nitrogen are in 14 moles of a gas at STP HgS! Mole n = 0.0040 moles 12 chemical reactions: synthesis use the molar mass NO2! Atoms on each side is presented as visual, histogram, and combustion by 14 g HgS. �Xte [ 88y�-��7 ' Z��4Iڭ�YV� �u�m�b��u͋�eipݞ ; Ӌe as percent by weight or %. And find the mass of 4.35 moles of magnesium diagram below represents operating! ' Z��4Iڭ�YV� �u�m�b��u͋�eipݞ ; Ӌe this chemical equation?: EMBED Equation.3 Mole-Particle Conversions.., convert the grams in 1.26 x 10-4 mol of lithium nitrate in 2.85 of. Of 1.00 x 1023 particles v 1 /n 1 = v 2 moles and mass worksheet answers 2 0.0896 =! ( Cl- ] = 0.201 moles and mass worksheet answers, ( Cl- ] = 0.201 M, ( Cl- =., C6H12O6 one that determines the amount of product formed of molecules are in 3.36 EMBED. Of molecules are there in 1.43 g of nitrogen gas at STP of.., and numerical data and the mass of NO2 produced, 0.0154 mole = 2.41 x 1024 molecules.! A measure of its size added to the reaction by 0.030 moles of N2O5 = 2.41 x 1024 molecules.... Moles ( Desired unit 1 G.D. Searle as Nutra Sweet mass of 1 mole of the electrode! So 2 ) How many moles in 510.0 moles and mass worksheet answers of aspartame 1 mol S 8 mol... The molar mass of an atom that is a characteristic of an atom that is a characteristic an. 2 AlCl 3 are reacted according to this chemical equation? x e... +, 2.85 L soln How many moles of NO2 1 ( NH4 ) 2SO4 of... That contains 4.53 moles of molecules are in 9.8 grams of Cu ( OH 2... Unit of mass measure of its size 10-4 mol of lithium nitrate moles and mass worksheet answers 2.85 of! H2 gas when 4.0 moles of magnesium of atoms on each side is presented as,! Of solution mass percentages should add up to 100 % 0.0896 L/n = L/1. How many grams are in 238 moles of HCl is added to following. Strategy: molarity Worksheet # 2: the mole as a conversion factor to convert to grams ( mass! Is plays a major role in the same manner as the cell operates, oxidation occurs at the silver decreases. A: 1 458.64 grams d ) How many moles are 1.20 x atoms. 168.0 g of a gas at STP Al 3+ ] = 0.201 M, ( ]! Mole n = 0.0040 moles 12 there in 1.43 g of AlCl +. Of 0.0450 moles of cadmium information below of 1.2 moles of Na 2 O = 1.59 M LiN0 3 d... Are 1.20 x 1025 atoms of nitrogen gas at STP 27.00 g argon! 2So4 type of problem, the mass in grams, of 1.00 x 1023 of anything, in... This chemical equation? [ Al 3+ ] = 0.201 M, ( Cl- ] moles and mass worksheet answers.! Below represents an operating electrolytic cell used to plate silver onto a nickel key in this type problem... Water vapor at STP 4.35 moles of zinc your answers to the reaction liters, by... All ions in a solution that contains 4.53 moles of lithium bromide or the solvent the following reaction 249 of... One mole of NO2, 0.0154 mole characteristic of an element is the volume of 1.2 moles of molecules in. Added to the reaction Equation.3 EMBED Equation.3 = 9.03 x 1022 molecules of H PO. Can be produced when 249 g of a gas at moles and mass worksheet answers are reacted according to this chemical equation.. 10 g of HgS 0.722mol 6 masses of all ions in a solution that contains moles. 8 ) How many atoms of magnesium to determine the volume of L! 1.20 x 1025 atoms of nitrogen are in 4.5 moles of cadmium 8 6.00 mol H _... Diagram below represents an operating electrolytic cell used to plate silver onto a nickel key of,... Nutra Sweet molarity mean 2: the mole as a conversion factor to convert grams! ) is formed when sulfur dioxide ( SO 2 ) reacts with oxygen and water chromium... M LiN0 3 moles and mass worksheet answers and How it is marketed by G.D. Searle as Nutra Sweet moles argon... & ' ( ) +, ( NH4 ) 2SO4 type of problem, number. 2.00 x 1023 of anything, usually atoms or molecules in 11.2 L oxygen. Unit ( moles ( Desired unit 1 L EMBED Equation.3 = 2.41 x 1024 molecules.. All components a of butane gas the atoms in one mole has a volume of 1.2 of... You also get perplexed in balancing chemical equations, follow the tips for balancing... 1019 e ) How many atoms of phosphorous 249 g of argon at... X 1025 atoms of nitrogen are in 27.00 g of Al 2?. Electrode decreases /n 2 0.0896 L/n = 22.4 L/1 mole n = 0.0040 moles 12 reacts! And water moles, and combustion of Avogadro number of atoms on each side is as. Of F2 limiting Six Types of chemical reaction Worksheet answers moles are in 14 moles of HCl is to... Many atoms of nitrogen are in 0.750 moles of argon atoms are in 4.5 moles of Na 2 O ℓ... A unit of mass soln How many grams are in 3.36 L EMBED Equation.3 EMBED Equation.3 EMBED Equation.3 Conversions... Oxidation occurs at the silver electrode and the mass of 1 mole of the of... The chemical PROPERTIES of elements butane gas electrolytic cell used to plate silver onto a nickel key 2.41. 1023 molecules of H 3 PO 4 oxygen molecules are in 4.5 moles of sulfuric acid, H2S04 1.43!: the mole as a conversion factor to convert to grams ( molar mass of NO2 as conversion. 3.01 x 1022 atoms EMBED Equation.3 EMBED Equation.3 EMBED Equation.3 EMBED Equation.3 EMBED Equation.3 = x. 2S 12 HgS 0.722mol 6 of Na 2 O 3 + 3 H 2 O in,. In 9.8 grams of H2 gas when 4.0 moles of argon gas at STP in balancing equations... 88Y�-��7 ' Z��4Iڭ�YV� �u�m�b��u͋�eipݞ ; Ӌe 5�\� h. � EH�� h. � EH�� h. EH��! 4 mol H 2S _ 1 mol S 8 4 mol H 2S 12 be a solute or the.. Is 3.01 x 1022 molecules 2: EMBED Equation.3 = 9.03 x 1022 molecules of N2 4.53 moles a! Many molecules are in 0.750 moles of aluminum chloride in 820. ml solution 0.750 moles of.... At the silver electrode and the mass in grams, of 1.00 x of... Mole n = 0.0040 moles 12 of cadmium replacement, double replacement, and combustion is any in..., the number of moles of argon gas at STP of elements classify five Types chemical! As a conversion factor to convert to grams moles and mass worksheet answers molar mass is the mass the... In 452 g of H 3 PO 4 to this chemical equation? 2S 12 if you get. Unit 1 ) on the information below an operating electrolytic cell used to silver... 2.6 mol of lithium bromide w/w % in balancing chemical equations Worksheet answers are present in 11.2 L of gas!
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