Q: How are electrons and protons similar? How are they different?
A:
Q: Is the statement consistent with Dalton’s atomic theory as it was originally stated? Why? All cobalt…
A: Dalton’s atomic theory All matter is made of atoms. Atoms are indivisible and…
Q: Describe John Dalton's atomic theory?
A: Structure of atom is the significant discovery. Different scientists has proposed different…
Q: Is the statement consistent with Dalton’s atomic theory as it was originally stated? Why? Lead atoms…
A: Given, Lead atoms can be converted into gold.
Q: 13. What were the 4 ancient elements that Empedocles described? 14. List the six ideas of John…
A:
Q: what was johns dalton initial research focus was and what he eventually contributed to early atomic…
A: Johns dalton first introduced atomic theory in chemistry.He gave three laws.These are i-Law of…
Q: Describe Rutherford’s gold foil experiment. How did the experiment prove that the plum-pudding model…
A: Plum pudding model was first put forth J J Thomson. According to him, the structure of the atom was…
Q: A sample of magnesium is found to contain 78.70% of 24Mg atoms (mass 23.98 amu), 10.13% of 25Mg…
A: The atomic mass of an element is the average of masses of all the isotopes of that element present…
Q: Describe Rutherford’s nuclear model of the atom. What was revolutionaryabout his model?
A: According to the Rutherford atomic model: The positively charged particles and most of the mass of…
Q: + а. Bohr b. Dalton C. Rutherford d. Thomson 3. Which atomic model was the first to show a nucleus,…
A: 27) in the Given figure, the model of an atom was proposed by Thomson.
Q: Explain John Dalton and the Atomic Theory?
A:
Q: Explain how each scientist’s experiment contributed to the characterization of the atom (example:…
A: We have to explain each scientist’s experiment.
Q: What most likely explains why the chemical symbol for calcium is? A. The symbol was already used for…
A: Calcium is discovered by Humphry Davy in 1808. It belongs to group 2 of the periodic table with an…
Q: Rutherford bombarded a gold foil with alpha particles. Describe what he observed and what did his…
A: Rutherford bombarded a gold foil with alpha particles which are positively charged particles and…
Q: What subatomic particle is the primary concern of chemistry?
A: Bohr model gives information about three basic subatomic particles.
Q: What is Henri Becquerel contribution to the atomic theory? Explain in detail.
A: Answer - discovery of radioactivity in uranium by French physicist Henri Becquerel in 1896 forced…
Q: 1. What is the name of John Dalton's theory? 2. What are elements made of? 3. An atom of hydrogen…
A: As you have posted a question with multiple parts, we will solve the first three parts for you. To…
Q: Table 1. Mass # # protons (9.) # neutrons # electrons Symbol 55 (10.) (11.) Co 40 19 (12.) (13.)…
A: Given, Mass of three atoms are provided Required, Number of protons ,…
Q: atomic theorists
A: Niels Bohr proposed a theory for the hydrogen atom based on quantum theory that energy is…
Q: Briefly explain how Rutherford discovered the nucleus.
A:
Q: The Bohr model of the atom was an important discovery that led to the modern theory of atomic…
A:
Q: Why did J.J. Thompson experiments with cathode ray tubes imply about the mass of an electron…
A:
Q: Where are particles with virtually no mass found in the atom? A. The electron cloud B. Inside the…
A: Ans A) The electron cloud .
Q: List and explain Dalton's atomic theory (postulates). Explain which postulates were rejected and…
A: John Dalton gave the first postulates about the structure of an atom......
Q: What if Rutherford believed atoms were as Dalton envisioned them? What do you suppose Rutherford…
A:
Q: 25. Which determines the speed of a molecule? * a. Its kinetic energy b. The amount of the molecules…
A: Multiple choice questions : 25-28
Q: What is an element?How are elements arranged in the periodic table?
A: The elements starting from hydrogen having atomic number 1 to the element with atomic number 118 are…
Q: Which scientist developed the "plum pudding" model of the atom? Spherical cloud ´of positive charge…
A: J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively…
Q: Which idea came out of Rutherford’s gold foil experiment?a) Atoms contain protons and neutrons.b)…
A: Rutherford’s gold foil experiment is also called as Planetary model of the atom in which he told…
Q: Which scientist developed a model that is still used today to show the number of electrons in each…
A: Bohr model explains an atom as a small and positively charged nucleus surrounded by electrons. These…
Q: Match the discovery/ideas/experiment to the contributor Found evidence that the atom is mostly empty…
A: We are given ideas/experiments/discoveries related to atomic structure and we have to identify the…
Q: Design a concept map that compares and contrasts the atomic ideas proposed by Democritus and John…
A: These are different atomic theories and in next step two are explained. Ancient Greek Beliefs.…
Q: How many isotopes does this element have?
A: From the graph, it is cleared that the number of isotopes of the unknown element is 5.
Q: accomplishments
A:
Q: What did John Dalton proposed about the atom?
A: John Dalton atomic model is a postulate that has no experimental basis.
Q: What did Rutherford conclude about the atom that would explain the unexpected result explain
A: Rutherford performed the α-particle scattering experiment and observed that most of the α- particles…
Q: Which of John Dalton’s theories given below were found to be INCORRECT? 1. the atoms of elements…
A: Dalton's atomic theory was the first theory to describe all matter in terms of atoms and their…
Q: The element sulfur has an atomic number of 16 and an atomic mass of 32. How many neutrons are in the…
A: Atom consist of nucleus at its center and electrons revolve around the nucleus. Nucleus contains…
Q: why Rutherford's model of an atom was considered to be unstable?
A: Rutherford’s experiment:Rutherford suggested that there is something at the center of the metal…
Q: What is modern Atomic Theory?
A: Given term, Modern atomic theory Atom - a fundamental particle of matter (i.e. anything that can be…
Q: Draw a diagram of Rutherford's experiment and describe it. Include a full description of how the…
A: Rutherford uses a gold thin foil and alpha-particles and because of that this model is also known as…
Q: What did the scientists who are credited with discovering the proton and neutron have in common?
A: Solution Ernest Rutherford determined that his scintillation detectors detected gas nuclei once a…
Q: All parts of Dalton's theory on atoms is still accepted today. O True O False
A: Postulates of Dalton’s atomic theory is shown below: All matter is made up of individual particles…
Q: In Rutherford’s planetary model of the atom, what keepsthe electrons from flying off into space?
A: To explain what is/are the things that keeps the electrons from flying off into the space in the…
Q: How many electrons are in 1 coulomb?
A: Particles that reside inside an atom are called subatomic particles. These particles are electrons,…
Step by step
Solved in 2 steps with 1 images
- (in ML) evo/index.html?deploymentld%35575082893418928890996 2&elSBN=9781305657571&nbld%3D2199898&snapshotld%3D21998... * INDTAP Q Search this co Use the References to access important values if needed for this question. Oxalic acid dihydrate is a solid, diprotic acid that can be used in the laboratory as a primary standard. Its formula is H2C204•2H2O. A student dissolves 0.210 grams of H,C,O4•2H¬O in water and titrates the resulting solution with a solution of sodium hydroxide of unknown concentration. If 27.3 mL of the sodium hydroxide solution are required to neutralize the acid, what is the molarity of the sodium hydroxide solution ? M Submit Answer 5 question attempts remaining Neo/index.html?deploymentld%3D55750828934189288909969212&elSBN=9781305657571&snapshotld%3D2199... Tp * NDTAP Q Search this co Use the References to access important values if needed for this question. Cyclopentasilane (SigH10) is a liquid with a density of 0.963 g cm3. It reacts with oxygen to give silicon dioxide (SiO2) and water. Calculate the mass of water that would form if 29.4 cm³ of cyclopentasilane reacted completely with excess oxygen. g water Submit Answer 4 question attempts remainingK Haylee Scott - cp Zoom meeting lin com/web/viewer.html?state%=D%7B'ids %3A%5B"1zOflgo1GoQFrdviJ6PWx8L3h2j4uav5n"%5D%2C"action"%3A'open C Clever | Portal A Classroom https://sso.theleam. M Oro Grande Elemen. W Yearbook Aven ue Period 5 Scien. Haylee Scott - cprr061.pdf Building Vocabulary From the list below, choose the term that best completes each sentence. matter physical change endothermic reaction chemical change chemistry precipitate exothermic reaction 7. Any change that alters a substance without changing it into another substance is a(n) 8. is anything that has mass and takes up space. 9. A reaction that releases energy in the form of heat is called a(n) 10. A(n) absorbed. 11. A chemical reaction is also referred to as a(n) is a reaction in which energy is 12. A(n) a chemical reaction. is a solid formed from a solution during 13. is the study of the properties of matter and how matter changes. OPearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved…
- Window Help 81% Mon 3:26 PM Enois State' University: CHE 1 * Mind Tap - Cengage Learning Tevo/Index.html?deploymentld%3D55750828934189288909969212&elSBN=9781305657571&snapshotld%3D2199898&id=1... INDTAP Q Search this cour Use the References to access important values if needed for this question. Calculate the number of atoms of carbon (C) in 474 cm³ of the colorless gas ethane at 0 °C and atmospheric pressure, where its density is 1.34×103 3. The molecular formula of ethane is C,H6. g cm C atoms Submit Answer 5 question attempts remainingFile Edit View History Bookmarks Profiles Tab Window Help 7 YouTube Maps = tab liquid x N. Ask Yox N. Ask Yo x A ALEKS X www-awu.aleks.com/alekscgi/x/1sl.exe/1o_u-IgNslkr7j8P3jH-IvTqeviKFP6W0cqJcWJdIACROQwyw24GWHintXeoleXL2H OSTATES OF MATTER Using heat of fusion or vaporization to find the heat needed to... esc Explanation 39 cto X 1 Q A 2 Gheat ox v Calculate the amount of heat needed to melt 88.1 g of solid methanol (CH3OH) and bring it to a temperature of -23.6 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol. 0 Z Check W S 3 X g X E D $ 4 C S > R F % 5 I tv T V 6 G B Thank Y 7 H U G 111 ck X N The 8 © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility 274@ A Aa O J Sketch X New 1 x + GCwaDdYUtqAJT1yasCs1fG_rUoyaRSVpsjfsOdH... ☆ 0 1 M 9 ( K O < 431% D ge Gwet dr x 0 L Wed 9:43 PM 0/5 P command Lara V ? 1 dlo AWindow Help i Posh Hom x G hip hop da X How Man & aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-IvTqeviKFP6W0cqJcWJdIACROQwyw24GWHIn6CnF7sAtsBMB16t9kVCHGPru_na2z... Q 18.5 Gibbs Free E... Reading Schedule 19.6 Reduction Po... SOLUTION: The le... Math 115 W- W History 1 Part Time X Gibbs Free E... 9 = 2 Bookmarks Profiles Tab Part Time X W 5.3 Enthalpies of... ●ENTROPY AND FREE ENERGY Calculating reaction free energy under nonstandard conditions A chemist fills a reaction vessel with 0.969 atm nitrogen (N₂) gas, 6.95 atm oxygen (O₂) gas, and 4.48 atm nitrogen monoxide (NO) gas at a temperature of 25.0°C. Under these conditions, calculate the reaction free energy AG for the following chemical reaction: N₂(g) + O₂(g) 2NO(g) Use the thermodynamic information in the ALEKS Data tab. Round your answer to the nearest kilojoule. || Explanatio 3 E Check 26 X $ 4 R > S ♫ 88 50 % e T tv Part Time x ^ 6 Y Is G Food Serv X G 10 out of & 7 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use…
- M You have submitted yo x G traductor inglés españc x Tn Course: CHM 2045/LEC X Course Home ellum.ecollege.com/course.html?courseld=17244391&OpenVellumHMAC-8f6228334c08db09a55624d45c121036#10 Maps enter image source... Part A Fill in the following chart. If the molecule column is blank, find an example that fulfills the conditions of the rest of the row. Complete the first row of the table. Hybridization Electron- #Molecule domain Dipole moment? Yes or of Central Atom Geometry No. 1 CO₂ Electron-domain Geometry 2 sp yes 3 sp³ no 4 trigonal planar no 5 SF4 Submit Request Answer 6 octahedral no 7 yes Part B trigonal 8 no bipyramidal 9 XeF2 Complete the first row of the table. Hybridization of Central atom $77³ P Pearson Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Priva hp sp² O linear O trigonal planar Otetrahedral O trigonal bipyram O octahedral O sp sp²Profiles Tab Window Help Chrome Edit View History Bookmarks File Lobby | Top Hat N Watch Gilmore Girls x * Dementia Friend Ce X y! Yahoo Ce A www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-IvdWKW_BBZZ16tTytly4Fcfu6zOtOf8oM Spotify Web Playe... M Common Ethical D.. O CHEMICAL REACTIONS Interconverting number of atoms and mass of compound Try Again Your answer is wrong. In addition to checking your math, check that you used the right data and DID M Calculate the number of magnesium atoms in a 80.0 g sample of forsterite (Mg, SiO4). Be sure your answer has a unit symbol if necessary, and round it to 3 significant digits. Explanation Recheck MAR 11 MacBook Air IIm-n- x herthHa Eavier Aotive Qung ox Sheerpwth Quir 7 PerentelX Sherpam Maement Sy agng eisevier.com//auirtansignmentid3455638courselda154811Atoken-eyJhbociOUIUUMU9.eydzdwiouprzht.mvdaGlua3NpdovitmvbscDAlinidXNci Question 20 of 30 A calibrated burette will be used to deliver an intravenous medication dosage order of 200 mg contained in 5 mL. This volume is to be diluted in 40 mL and infused over 30 minutes. A 15-ml flush is to follow the infusion. At what rate in milliliters per hour will the infusion need to run to deliver the ordered dose? Record your answer as a whole number. mL/hr Candent Nat Sure m C Cha O ts Ch Cha On 3 6 7. 8. R. T. Y. U A K C M command comman P. CO 38
- nd Tap - Cengage Learning C Calculate The Volume (in ML) evo/index.html?deploymentld%3D557508289341892889099692 ISBN=9781305657571&nbld%3D2199898&snapshotld%3D21998... * To INDTAP Q Search this cc Use the References to access important values if needed for this question. A student is asked to standardize a solution of barium hydroxide. He weighs out 0.926 g potassium hydrogen phthalate (KHC3H4O4, treat this as a monoprotic acid). It requires 29.3 mL of barium hydroxide to reach the endpoint. A. What is the molarity of the barium hydroxide solution? This barium hydroxide solution is then used to titrate an unknown solution of hydroehloric acid. B. If 23.6 mL of the barium hydroxide solution is required to neutralize 21.8 mL of hydrochloric acid, what is the molarity of the hydrochloric acid solution? M Submit Answer 5 question attempts remainingHing.com Get?Fileld-hNDLmdusbEmplc8ue%2laZn4otcFEREdCkEOBEgn%2bHNOn13v5HvafUMjlu77SxrKT vity - Saved to itslearning P Search Layout References Review View Help O Editing v w Ro... v 12 A^ U ev Av A =<而< 向 川< 3Ba+ N2 → BazN2 7. Which element is your limiting reactant Barium or Nitride? (Hint: which produced less product) Pb(NO3)2 + 2KI → PbI, + 2KNO3 8. How many moles are in 16.4g of Lead (II) nitrate? Pb(NO3)2 + 2KI → PbI2 + 2KNO3 9. How many moles of lead (II) iodide are formed from your moles of lead (II) nitrate in question 8? Pb(NO3)2 + 2KI → PbI, + 2KNO3 10. How many grams are there in your moles of lead (II) iodide from question 9? Pb(NO3)2 + 2KI → PbI2 + 2KNO3 11. How many moles are in 28.5g of potassium iodide? 909 U.S.) Text Predictions: On ASUS f10 (12 f5 f6 f8 f9 & 6 7 8 因ome File Edit View History Bookmarks Profiles Chai = G numb G aceto Cell t b Answb Answ My DA AL x CA stur CA sol C www-awu.aleks.com/alekscgi/x/isl.exe/1o_u-IgNslkr7j8P3jH-IvTqeviKFP6W0cqJcWJdIACROQwyw24GWHInMX9hNGVYTIJ JZmF5TTEgJckvK3y58Hg Solubility and... 18.3 Gibbs Free E... 18.5 Gibbs Free E... Reading Schedule 19.6 Reduction Po... SOLUTION: The le... Math 115 W-S Fall... (51) OSTATES OF MATTER Calculating molality Micro To do Neuro & list of □ esc molarity = molality = 0 Explanation 1 Q A 2 A student dissolves 10. g of styrene (CH₂) in 225. mL of a solvent with a density of 0.96 g/mL. The student notices that the volume of the solvent does not change when the styrene dissolves in it. Calculate the molarity and molality of the student's solution. Round both of your answers to 2 significant digits. Z Check W Tab S 8 # 3 X Window E 0° 0x0 17 D $ 4 C 5 R F % 5 V tv A 6 T | Y G B & 7 H CE U N 8 — J M Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center |…
