1. How many MOLECULES of nitrogen trifluoride are present in 2.97 moles of this compound? molecules. 2. How many MOLES of nitrogen trifluoride are present in 7.20×1022 molecules of this compound ? moles.
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- S Profiles Tab Window Help Homework X World view X Paraphrasi X signment/takeCovalentActivity.do?locator=assignment-take G Grammarly X moles How many moles of Be are there in 72.8 grams of Be ? Submit Answer My Home [Review Topics] [References] Use the References to access important values if needed for this question. X Retry Entire Group 9 more group attempts remaining OWLv2 | C X G E Show All[Review Topics] [References] Use the References to access important values if needed for this question. a. How many grams of aluminum chromate, Al2 (CrO4)3, are present in 3.77 moles of this compound? b. How many moles of aluminum chromate are present in 3.98 grams of this compound? Submit Answer grams 9 more group attempts remaining moles Retry Entire Group[Review Topics] [References] Use the References to access Important values if needed for this question. 1. How many MOLES of boron tribromide are present in 1.58 grams of this compound ? moles. 2. How many GRAMS of boron tribromide are present in 3.45 moles of this compound ? grams. Submit Answer Retry Entire Group 9 more group attempts remaining
- * OWLV2 | On x 2 Molecular P Pearson Si I Molar mas x x OWLV2 | As My Home takeAssignment/takeCovalentActivity.do?locator%=assignment-take [Review Topics) [References) Use the References to access Important values If needed for this question. a. How many moles of sulfur hexafluoride, SF6, are present in 1.87 grams of this compound? moles b. How many grams of sulfur hexafluoride are present in 3.48 moles of this compound? grams Submit Answer Retry Entire Group 9 more group attempts remaining Previous Next 回ヨ* OWLV2 | As X E My Home * OWLV2 | On x 2 Molecular Pearson Si Molar mas X signmejnt/takeCovalentActivity.do?locator=assignment-take (Review Topics) [References] Use the References to access important values if needed for this question. The formula for sulfur hexafluoride is SF6. a. How many molecules are in 6.61 grams of sulfur hexafluoride? molecules b. What is the mass in grams of 2.40 × 102 molecules of sulfur hexafluoride? grams Submit Answer Retry Entire Group 9 more group attempts remainingRIAS X * OWLV2 | On X 2 Molecular P Pearson SI X metals peri x A My Home takeCovalentActivity.do?locator%=assignment-take (Review Topics) (References] Use the References to access Important values if needed for this question. a. How many moles of sulfur hexafluoride are present in 2.40 x 1022 molecules of this compound? moles b. How many molecules of sulfur hexafluoride are present in 3.52 moles of this compound? molecules Submit Answer Retry Entire Group 9 more group attempts remaining Show Hint Previous Next 回ヨ *
- Make an individual table for each and every one of the following (7) molecules: 1. urea, (NH2) 2CO 2. ethyl thiomethyl ether, CH3SCH2CH3 3. ethyl chloride carbonate, CH3CH2OCOCl 4. trimethyl phosphite, (CH3O)3P 5. vinyl magnesium bromide, CH2CHMgBr 6. Cesium 2-hydroxyacetate, HOCH2CO2Cs 7. C4H8Br2 (an isomer).keCovalentActivity.do?locator-assignment-take d Use the References to access important values if needed for this question. a. How many ATOMS of carbon are present in 2.29 grams of carbon dioxide? atoms of carbon. b. How many GRAMS of oxygen are present in 7.14 x 1022 molecules of carbon dioxide? grams of oxygen. Submit Answer Retry Entire Group 9 more group attempts remainingBIUA O D O 三。 三三 New.. - 20 1. What does the average atomic mass of an element represent? What unit is used for average atomic mass? 2. Define molar mass. Using K,0 as an example, calculate the molar mass from the atomic masses of the elements. 3. What is meant by the percent composition by mass for a compound? Determine the percent composition by mass for water. 4. For 5.00-g samples of each of the following substances, calculate the number of moles of the substance present, as well as the number of atoms of each type present in the sample: a. Cu(s) b. NH,(g) c. KCIO,(s) d. Ca(OH),(s) 5. For the compounds in question 4, calculate the percent by mass of each element present in the compounds. 6. Define, compare, and contrast what are meant by the empirical and molecular formulas for a substance. Give an example of each. SAMSUNG 口Determine the molecular and empirical formulas for the substance shown in the ball-and-stick model below. Submit Answer Retry Entire Group Molecular Formula It needed for this question. Empirical Formula C = black H = gray CI = green 9 more group attempts remainingKeview fopica [References] Use the References to access important values if needed for this question. a. How many moles of tetraphosphorus decaoxide are present in 6.31 × 1044 molecules of this compound? moles b. How many molecules of tetraphosphorus decaoxide are present in 2.59 moles of this compound? molecules Submit Answer Retry Entire Group 9 more group attempts remaining Show Hint Cengage Learning | Cengage Technical Support 63°F Mostly SLE Effects of H X E ContentSer x Submit Answer My Home x Show Hint OWL 2 | Onli X a. How many ATOMS of carbon are present In 3.51 moles of carbon tetrabromide? atoms of carbon Retry Entire Group No more group attempts remain G cengage an X [Review Topics] [References] Use the References to access important values if needed for this question. b. How many MOLES of bromine are present in 7.97 x 1022 molecules of carbon tetrabromide? moles of bromine Previous FeSEE MORE QUESTIONSRecommended textbooks for youWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage LearningWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning