Concept explainers
Interpretation:
The molar mass of oxygen atoms has to be chosen from the given options, given that the
Concept Introduction:
Sum of atomic masses of all the atoms that are represented in chemical formula of substance is known as formula mass. If atomic mass and chemical formula of a compound is known, then formula mass can be calculated.
Molar mass is the mass that is expressed in grams of a substance that is equal to the formula mass of the substance numerically. Molar mass of an element is unique for the particular element. Two natural elements can never have the same molar mass.
Mole is defined as the amount of substance that has as many elementary particles as there are atoms in exactly 12 grams of
The relationship between the atomic mass unit and grams unit is,
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- try 30 X ADD FACTOR 48.0 [x( ) Aktiv Learning Determine the quantity of oxygen molecules in 3.00 moles of oxygen 6.022 x 10²3 4.98 x 10-24 5.78 x 1025 Question 7 of 14 6.022 x 1024 2 x + 1.81 x 10 44.00 ANSWER 32.00 96.0 2.00 x 102 2.89 x 10 3.00 com 2 16.00 1.81 x 10²4arrow_forwardReview I Constants I Perioc Phosphorus is obtained primarily from ores containing calcium phosphate. Part A calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosphorus? If a particular ore contains 59.0 Express your answer with the appropriate units. ? HA Value Units m = Request Answer Submitarrow_forwardAmmonia (NH,) chemically reacts with oxygen gas (02) to produce nitric oxide (NO) and water (H,0). What mass of nitric oxide is produced by the reaction of 6.8 g of ammonia? Round your answer to 2 significant digits. Explanation Check O2021 McGraw-Hill Education. All Ri M B acerarrow_forward
- SKILL #3 CONVERSIONS WITH MOLE RATIO C,Hale + 50o → 3 CO, (3)8, 2(g) 2(g) + 4 H,0, '2°(g) How many moles of 0, are required to produce 17.8 moles of CO,?arrow_forwardQuestion 13 of 25 A toy top has a mass of 32.0 g Cu . How many atoms Cu are in this spinning top, given that the average atomic mass of copper is 63.55 g/mol Cu ? STARTING AMOUNT ADD FACTOR ANSWER RESET 3.03 x 1024 32.0 1.22 x 1027 3.38 x 10-21 1.93 x 1025 1 3.03 x 1023 6.022 x 1024 63.55 6.022 x 1023 3.38 x 10-24 3.03 e Type here to search 耳|arrow_forwardatöms 15 What is the molar mass of argon such that the mass of 0.05mol of this gas is about 2g? 6/The molar mass of iron is M(Fe) = 56 g. mol %3D a) Calculate the number of atoms present in 0.28g of iron. b) What mass of iron corresponds to 0.18 mol of iron ? 17 a) Calculate the mass of a nitrogen atom. b) Calculate the mass of 2.5 mol of nitro- gen atoms. M(N) = 14g.mol 18/It is given 25.4g of copper : a) Calculate the number of copper atoms in the given sample. ab) Calculate the number of mol of copper in the given sample M(Cu) = 64 g.mol" -1 %3Darrow_forward
- 4.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 78. g/mol, is burned completely in excess oxygen, and the mass of the products carefully measured: product mass carbon dioxide 13.54 g water 2.77 g Use this information to find the molecular formula of X. olo Ar G Subscript Explanation Check © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility ........... . ............................. .arrow_forwardSKILL #3 CONVERSIONS WITH MOLE RATIO + 50, 2(g) → 3 CO. 2(g) + 4 H,0, (), How many moles of H,0 are produced if 13.8 moles of CO, were produced?arrow_forwardE Knowledge Check Question 7 6.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 176. g/mol, is burned completely in excess oxygen, and the mass of the products carefully measured: product mass carbon dioxide 9.75 g water 2.66 g Use this information to find the molecular formula of X. I Don't Know Submit Privacy Accessibity O2020 McGraw-Hill Education, All Rights Reserved. Terms of Use DIMG 20201214 15..jpg IMG 20201214 15...jpg O Type here to searcharrow_forward
- SKILL #3 CONVERSIONS WITH MOLE RATIO GHale + 50, 3 CO. 2(g) + 4 H,0, 2(g) (g) How many moles of C,H, are needed to completely react with 9.15 moles of 0,?arrow_forwardProblem 7.64 - Enhanced - with Feedback 25 of 33 I Review | Constants | Periodic Table You may want to reference (Pages 245 - 246) Section 7.8 while completing this problem. Part A Calcium cyanamide reacts with water to form calcium carbonate and ammonia via the following reaction: How many grams of water are needed to react with 78.0 g CACN,? CACN2(s) + 3H20(1) → CACO3 (s) + 2NH3(g) ΑΣφ mass H20 = g Submit Previous Answers Request Answer X Incorrect; Try Again Part B How many grams of NH3 are produced from 5.19 g CACN2? ? mass NH3 = g Submit Request Answerarrow_forwardLiquid hexane (CH (CH3CH,) CH,) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (CO,) and gaseous water (H,O). Suppose 6.03 g of hexane is mixed with 40. g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to 3 significant digits. db Explanation Check 30 dtv Rook 44 DII 80 19 F6 FS F4 esc F3 F2 & #3 delete 3 4 T Y W * 00arrow_forward
- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning