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Chemistry

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May 15, 2024

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10:00 PM Tue Mar 12 ooe =@ 46% @ ) @& bbhosted.cuny.edu HHome ) ® Review Test Submission: Practice Quiz 3 (Module 3) due March 7 Question 4 10 out of 10 points -'a We have two atoms, 2555Mn and 2655Fe. These two are isotopes. Selected Answer: & False Answers: True & False Question 5 10 out of 10 points Cellulose is a main component of many plant-base textiles like cotton and linen. Pure cellulose can K4 be classified as: Selected Answer: @, pure substance — chemical compound Answers: homogeneous mixture heterogeneous mixture pure substance — element @, bure substance — chemical compound none of these Question 6 10 out of 10 points Which of the following are polymers? Select all that apply. Selected Answers: @, RNA «, Proteins @ Cellulose Answers: V) RNA @ Proteins Oils @ Cellulose None of these are polymers Question 7 10 out of 10 points
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ffice Editing for Docs, Sheets & Slides| chrome-extension://bpmcpldpd majfigpchkicefoigmkfalc/views/app.html 2022 (1).doc mat Tools Help 9. Normal Unsaved chang Edits will not be automatically saved. Times New ... 12 T BIU A A- How many neutrons does the Cl atom have? a) 19 b) 18 Ans c) 9 d) 17 . 10. What is the difference between Atomic Mass and Atomic Number? Save now a) Atomic Mass is the number of protons; Atomic Number is the number of neutrons b) Atomic Mass is the number of protons and neutrons; Atomic Number is the number of protons c) Atomic Mass is the number of neutrons; Atomic Number is the number of protons d) Atomic Mass is the number of protons; Atomic Number is the number of protons and neutrons. 0 11. What is the electron configuration of the Neon (Ne) atom? 12. What is the chemical formula of the compound formed by Barium ion and sulfate ion? 31 DELL
Office Editing for Docs, Sheets & Slides| chrome-extension://bpmcpldpd majfigpchkicefoigmkfalc/views/app.html LL2022 (1).doc Format Tools Help H 9. Normal Unsaved change Edits will not be automatically saved. T Times New... Y 12 - BIU A A How many neutrons does the Cl atom have? a) 19 b) 18 c) 9 d) 17 10. What is the difference between Atomic Mass and Atomic Number? Save now 11. What is the electron configuration of the Neon (Ne) atom? (1).doc a) Atomic Mass is the number of protons; Atomic Number is the number of neutrons b) Atomic Mass is the number of protons and neutrons; Atomic Number is the number of protons c) Atomic Mass is the number of neutrons; Atomic Number is the number of protons d) Atomic Mass is the number of protons; Atomic Number is the number of protons and neutrons. 12. What is the chemical formula of the compound formed by Barium ion and sulfate ion? DELL 13:3 + D
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5G 9:02 bbhosted.cuny.edu Remaining Time: 42 minutes, 20 seconds. v Question Completion Status: What if a new element, Tyserium (Ty), was discovered and was found to have two isotopes, Ty-331 (atomic mass = 331amu, % Abundance =35% abundant) and Ty-337 (atomic mass = 337 amu, % abundance = 65%). What is the average atomic mass of Ty as it would appear on the periodic table ? ) а. 335 Ob. 334 Oc. 332 Od. 336 Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Submit + 17
1https://bbhosted.cuny.edu/webapps/assessment/take/launch.jsp?course_assessment_id%= 1347: * Question Completion Status: O all of these QUESTION 3 Which of the following lists all three subatomic particles? O matter; atoms and nucleus O matter; atoms and neutrons neutrons; electrons and protons O nucleus; electrons and protons QUESTION 4 The subatomic particle that weight very little and is found in orbital shells around the nucleus of an atom is the O electron O proton neutron O none of the above; there is no such particle QUESTION 5 Orbital shells of an atom: O contain electrons and are found in the nucleus O contain protons and are found in the nucleus O contain electrons and surround the nucleus O contain protons and surround the nucleus Click Save and Submit to save and submit. Click Save All Answers to save all answers. a *
GrA 410/viewContent/1121090/View m #1 - 1....pdf 5/6 Dc G TH CICCThE or EU GW CIC Co. Li CICCIC + W 18. The table shown below lists the naturally occurring isotopes of element X. Use this data to calculate the average at mic mass of element X. (You must show your work!!) 10 100% + Mass of Isotope (amu) 15.33 17.26 18.11 Diffusion and O....docx tv ♫ He © Isotopic Abundance (%) 28.6 13.3 58.1 A very brief Hist....pdf A Need Help? Show All Aa O :
Mr. Jcvon MMerton Search Chem.111-2 Fall 2020- 14iord Help Find S Replace 日B Mailings Review View References amakery =、m。 新。 /ME/2U |. AaBbCcD AaBbCcDc AaBbC AABBCCC A aB Title T Normal T No Spac. Heading 1 Heading 2 ఛా A Select ,~可|,三|三三三 Styles Font Paragraph 5.Identify the atom or ion corresponding to each of the following descriptions: I) [Kr]4d10°s²5p!; ï) an ion with a charge of -2 and ground state electron configuration [Ar]3d: i1) What element is isoelectronic with S- Write its electronic configuration usıng the noble gas core
com/document/d/1111vyFGo3gF7JsOMxSP9fjaE5ScWKnWrVY02qPa9s/edts alism-The M. Genetic drift-Wikip.. AAlgebra Foundatio. Image result for sur nline Lab - BUILD AN ATOM ert Format Tools Add-ons Help Accessibility Last edit was 5 minutes agg PART II: ISOTOPES 1. Play with the simulation to determine: a) Which particles affect the stability of the atom? b) Which particles do not affect the stability of the atom? 2. What are the names of the stable forms of oxygen (the first exam Oxygen-16 Oxygen-16
Lom/mod/quiz/attempt.php?attempt%3D20480958&cmid%3D906687 ING SYSTEM (ACADEMIC) al Chemistry I Spring21 Time left 0:44:00 The mass of a proton is 1.673 x 10-27 kg and the diameter of the nucleus of the H atom is 1.0 x 10° pm. Calculate the density of the nucleus of the H atom in kg/m. O a. 1.7x 1018 kg/m3 O b. 3.0x 1015 kg/m3 O c. 4.0x 1017 kg/m3 O d. 3.2x 1018 kg/m3 O e. 1.3x 1019 kg/m3 Nitrogen gas, in a 2.00-L flask, absorbs 2.00 kJ of heat and exerts a pressure of 1.80 atm. The atmospheric pressure in the room is 0.996 atm. Calculate the internal energy change for the system.
- CHEM A054 520 2 X Chapter 9 part 2 Homework i 9 1 points 8 ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launch Url=https%253A%252F%252Fclasses.alaska. 00:25:53 eBook Hint Print References Mc Graw Hill D Question 9 - Chapter 9 part 2 X 2 F2 Determine the mass of RbNO3 necessary to prepare 500.0 mL of a solution that is 0.228 M RbNO3. g RbNO3 3 80 F3 + $ 4 000 000 F4 er 5° % 5 F5 8 DII 9
Profiles Tab Window Help Homework X World viev X gnment/takeCovalent Activity.do?locator-assignment-take Paraphrasi X Submit Answer Grammarly X SEP 14 [Review Topics] [References] Use the References to access important values if needed for this question. A certain element consists of two stable isotopes. The first has a mass of 62.9 amu and a percent natural abundance of 69.1 %. The second has a mass of 64.9 amu and a percent natural abundance of 30.9%. What is the atomic weight of the element? átv My Home X amu Retry Entire Group 9 more group attempts remaining 2.1 OWLV210 x A 0 . + Show All - 43 口 X W V a 1s v
Macmillan L A sample of aluminum foil contains 9.00 x 1023 atoms. What is the mass of the foil? E 5 20 mass: C x10 TOOLS 888 R F V 5 FEB 15 5% T G ^ 6 B MacBook Pro Y Lon H 27 tv N U J ▶II * 8 M MOSISO ▶ NAO 9 K O < bo 0 A command P : ; Aa { [ V option + 11 = ? } 1 g delete return
PHYSICAL SCIENCE-Grade 12 Self-Instructional Packets (SIPacks) Activity 2: Capture the Neutron Identify the isotope formed when an atom captures a neutron, You may use your Periodic Table to identify the isotope. 1. Ni 2. Cu 3. Fe 4. Fe 5. 2U 'on on fon 0 'on on +y+ energy +y+ energy + y + energy + y+ energy +y+ energy E. Discussing new concepts and practicing new skills #2 The Atomic Number and the Synthesis of New Elements in the Laboratory
+BIUA at Tools Add-ons Help Last edit was on October 8 GD 田回。 三 三: 30 ading 1 Russo One 25 12 24.986 10.00% 0.1000 Magnesium-25 Magnesium-26 26 12 25.983 11.01% 0.1101 Isotope Mass Abundance decimal m=mass of isotape Average Atomic Mass:=23.985x0.7899+24.98x0. 1000+25.983x0.1101 =24.305 amu approx.
der - 18668 M Zoom link (period 4) 18668@lir x OEmpower 2021 + A educate.lindsay.k12.ca.us/iFrame.aspx?iCtrl3=STUDENT_BASE_HOME_CONTROL ookmarks Ea IXL A Classes Google Slides O Empower 2020 E Google Docs C Lindsay High School CMA Lear Naturally occurring elements are originally formed: O A. Inside the core of stars, or when stars explode and form the heavier elements O B. In the Periodic Table of Elements C. In science laboratories D. Inside naturally occuring parent elements
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4G "l ooredoo K/s CHEM1101-Che... Suftanate of Oman Minitry of Hiyher Education Chemistry 1 – ENDR1101: Tutorial (3) – Chapter 3 gg Depa 27. An element consists of 1.40% of an isotope with mass 203.973 amu, 24.10% of an isotope with mass 205.9745 amu, 22.10% of an isotope with mass 206.9759 amu, and 52.40% of an isotope with mass 207.9766 amu. Calculate the average atomic mass and identify the element. 30. Assume silicon has three major isotopes in nature as shown in the table below. Fill in the missing information. Isotope Mass (amu) Abundance 28Si 29Si 27.98 4.70% 32Si 29.97 3.09% 37. Aluminum metal is produced by passing an electric current through a solution of aluminum oxide (Al,O;) dissolved in molten cryolite (Na;AIF,). Calculate the molar masses of Al,O, and Na;AIF. 55. What number of atoms of nitrogen are present in 5.00 g of each of the following? a. glycine, C,H;O,N b. magnesium nitride c. calcium nitrate d. dinitrogen tetroxide 62. Arrange the following substances in order…
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