Homework Answers
28. An isotope X of a particular element has an atomic number of 8 and a mass number of 18. Therefore:
Atomic number: Number of protons found in the nucleus of an atom.
Mass number: Number of protons and neutrons present in a nucleus.
Isotopes of the same element will have the same atomic number and different mass number
Oxygen has an atomic number of 8. Therefore number of protons is 8 and number of neutrons present is 10.
Hence option d is correct.
29. The correct name for V2+ is Vanadium (II) ion as the oxidation state of vanadium is 2.
Hence option c is correct.
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atomic theory of matter Chemistry | early atomic theory I general...
General Chemistry Laboratory I Date: DISCUSSION QUESTIONS 1. Elements from which group on the periodic table...
General Chemistry Laboratory I Date: DISCUSSION QUESTIONS 1. Elements from which group on the periodic table form ions that always remain soluble? 2. Salts containing which other positive ion were always soluble? 3. Salts containing which negative ion were always soluble? 4. Which negative ions were almost always soluble? 5. Summarize the solubility rules below. List them as Always Soluble, Mostly Soluble, and Mostly Insoluble.
whats the answers please GENERAL CHEMISTRY LAB I-CHEM 111- Quiz # Lab 19 Flame Test, Atomic...
whats the answers please
GENERAL CHEMISTRY LAB I-CHEM 111- Quiz # Lab 19 Flame Test, Atomic Structure and Quantum Numbers 1. What are the fundamental particles that an atom contains? A wave function has a set of three quantum numbers, which are? 2. Arrange the orbitals for a many electron atom in each of the following lists in the order of increasing energy a. 3d, 2p, 4s, 3p b. 45, 3d, 5s, 4d 3. Write the electron configurations for the...
GENERAL CHEMISTRY I GROUP STUDY ASSIGNMENT TE The first two problems are to be submitted today....
GENERAL CHEMISTRY I GROUP STUDY ASSIGNMENT TE The first two problems are to be submitted today. 1. (25PTS) An astronaut 300 km above the surface of the earth records a temperature of 226.8°C Calculate the average speed of molecular Oxygen in m/s and mile/hr under these conditions. The formula for the average speed can be derived from the kinetic theory of gases and it is given by SRT average speed = (molar mass) 2. (25PTS) Data: R=0.0821 L atm/(K mole)...
Please answer below question. Just the simple complete answer, thank you General Chemistry I Lecture 1H...
Please answer below question. Just the simple complete answer,
thank you
General Chemistry I Lecture 1H Home T MysC Homework: Three Major Classes of Chemical Saved 12 3 attempts left Check my work Enter your answer in the provided box. 0.5 points Water "softeners" remove metal ions such as Ca2+ and Fe+ by replacing them with enough Na* ions to maintain the same number of positive charges in the solution. If 3.72 x 102 L of "hard" water is 0.0680...
Can someone help me solve these General chemistry questions??? thank you! The literature value for the...
Can someone help me solve these General chemistry questions???
thank you!
The literature value for the Ksp of zinc oxalate is 2.7 x 10".Calculate % error comparing your Ksp to the literature value? Over the years the class average for the Ksp for this experiment has been 1.19 x 107. Calculate the % error comparing your Ksp to the average class value. 3. Based on the literature value what is the molar solubility (Ⓡ) of zinc oxalate? 4. What would...
Multipart homework question for Chemistry I need help with. thank you. Which of the following solutions...
Multipart homework question for Chemistry I need help
with. thank you.
Which of the following solutions has a molarity of 2.0 0.050 mole of solute in 25.0 mL of solution 2.0 moles of solute in 500.0 mL of solution O 3. moles of solute in 3.0 L of solution O 0.020 mole of solute in 50.0 mL of solution Calculate the concentration in % (m/m) of a solution containing 35.0 g of LiF dissolved in 315.0 g of H20. 10.0%...
I’m so confused on how to do any of this. Name Date General Chemistry I Lab CHE 1211 Data: Concentration of NaOH Trial Titration (to be used as practice) Initial burete eading4.0 ml Final burette...
I’m so confused on how to do any of this.
Name Date General Chemistry I Lab CHE 1211 Data: Concentration of NaOH Trial Titration (to be used as practice) Initial burete eading4.0 ml Final burette reading 20.h m 22.om. Volume of NaOH used Repeat until 2 successful titrations are achieved. Titrations (to be used in calculations) K.Oml 0.bml 35.o mL 22.3 mL 38.5ml ↓ 30.6 mL45.0 mL 49.0 mL 35.5mL50.0 me 22.0mL H. m0 ml 1b.20 m 4.5ml Initial burette...
Southern University at New Orleans Name Due Date 11/05/2019 Fall 2019 General Chemistry (CHEM 111) Homework 4 Part...
Southern University at New Orleans Name Due Date 11/05/2019 Fall 2019 General Chemistry (CHEM 111) Homework 4 Part A. Circle the correct answer. 1. In Bohr's atomic theory, when an electron moves from one energy level to another energy level more distant from the nucleus: a. Energy is emitted. b. Energy is absorbed. c. No change in energy occurs. d. Light is emitted. e. None of these 2. The magnetic quantum number is related to the orientation of the orbital...
I need help with the whole question. I need explanation and solution Please and Thank you. Connect Homework - Ch...
I need help with the whole question. I need explanation and
solution Please and Thank you.
Connect Homework - Chapter 10 Saved Help Save & Exit Submit Exercise 10-21C Accounting for finance lease LO C3 On January 1, Harbor (lessee) signs a five-year lease for equipment that is accounted for as a finance lease. The lease requires five $36,000 lease payments (the first at the beginning of the lease and the remaining four at December 31 of years 1, 2,...
i can't solve this question of coordination chemistry, could someone hlep me please Exercise 1: 1. What kind(s) o...
i
can't solve this question of coordination chemistry, could someone
hlep me please
Exercise 1: 1. What kind(s) of interaction between the ligand and the metal ion is(are) considered in the crystal field approach? 2. Give and justify the degeneracy lifting for a tetrahedral complex. Would it be the same for an octahedral complex? 3. Let us consider hexaaquacopper(II) ion. Justify the elongation of two opposite Cu-O bonds (along z for example) compared to the other four Cu-O bonds using...
General Chemistry Laboratory I Date: DISCUSSION QUESTIONS 1. Elements from which group on the periodic table form ions that always remain soluble? 2. Salts containing which other positive ion were always soluble? 3. Salts containing which negative ion were always soluble? 4. Which negative ions were almost always soluble? 5. Summarize the solubility rules below. List them as Always Soluble, Mostly Soluble, and Mostly Insoluble.
whats the answers please
GENERAL CHEMISTRY LAB I-CHEM 111- Quiz # Lab 19 Flame Test, Atomic Structure and Quantum Numbers 1. What are the fundamental particles that an atom contains? A wave function has a set of three quantum numbers, which are? 2. Arrange the orbitals for a many electron atom in each of the following lists in the order of increasing energy a. 3d, 2p, 4s, 3p b. 45, 3d, 5s, 4d 3. Write the electron configurations for the...
GENERAL CHEMISTRY I GROUP STUDY ASSIGNMENT TE The first two problems are to be submitted today. 1. (25PTS) An astronaut 300 km above the surface of the earth records a temperature of 226.8°C Calculate the average speed of molecular Oxygen in m/s and mile/hr under these conditions. The formula for the average speed can be derived from the kinetic theory of gases and it is given by SRT average speed = (molar mass) 2. (25PTS) Data: R=0.0821 L atm/(K mole)...
Please answer below question. Just the simple complete answer,
thank you
General Chemistry I Lecture 1H Home T MysC Homework: Three Major Classes of Chemical Saved 12 3 attempts left Check my work Enter your answer in the provided box. 0.5 points Water "softeners" remove metal ions such as Ca2+ and Fe+ by replacing them with enough Na* ions to maintain the same number of positive charges in the solution. If 3.72 x 102 L of "hard" water is 0.0680...
Can someone help me solve these General chemistry questions???
thank you!
The literature value for the Ksp of zinc oxalate is 2.7 x 10".Calculate % error comparing your Ksp to the literature value? Over the years the class average for the Ksp for this experiment has been 1.19 x 107. Calculate the % error comparing your Ksp to the average class value. 3. Based on the literature value what is the molar solubility (Ⓡ) of zinc oxalate? 4. What would...
Multipart homework question for Chemistry I need help
with. thank you.
Which of the following solutions has a molarity of 2.0 0.050 mole of solute in 25.0 mL of solution 2.0 moles of solute in 500.0 mL of solution O 3. moles of solute in 3.0 L of solution O 0.020 mole of solute in 50.0 mL of solution Calculate the concentration in % (m/m) of a solution containing 35.0 g of LiF dissolved in 315.0 g of H20. 10.0%...
I’m so confused on how to do any of this.
Name Date General Chemistry I Lab CHE 1211 Data: Concentration of NaOH Trial Titration (to be used as practice) Initial burete eading4.0 ml Final burette reading 20.h m 22.om. Volume of NaOH used Repeat until 2 successful titrations are achieved. Titrations (to be used in calculations) K.Oml 0.bml 35.o mL 22.3 mL 38.5ml ↓ 30.6 mL45.0 mL 49.0 mL 35.5mL50.0 me 22.0mL H. m0 ml 1b.20 m 4.5ml Initial burette...
Southern University at New Orleans Name Due Date 11/05/2019 Fall 2019 General Chemistry (CHEM 111) Homework 4 Part A. Circle the correct answer. 1. In Bohr's atomic theory, when an electron moves from one energy level to another energy level more distant from the nucleus: a. Energy is emitted. b. Energy is absorbed. c. No change in energy occurs. d. Light is emitted. e. None of these 2. The magnetic quantum number is related to the orientation of the orbital...
I need help with the whole question. I need explanation and
solution Please and Thank you.
Connect Homework - Chapter 10 Saved Help Save & Exit Submit Exercise 10-21C Accounting for finance lease LO C3 On January 1, Harbor (lessee) signs a five-year lease for equipment that is accounted for as a finance lease. The lease requires five $36,000 lease payments (the first at the beginning of the lease and the remaining four at December 31 of years 1, 2,...
i
can't solve this question of coordination chemistry, could someone
hlep me please
Exercise 1: 1. What kind(s) of interaction between the ligand and the metal ion is(are) considered in the crystal field approach? 2. Give and justify the degeneracy lifting for a tetrahedral complex. Would it be the same for an octahedral complex? 3. Let us consider hexaaquacopper(II) ion. Justify the elongation of two opposite Cu-O bonds (along z for example) compared to the other four Cu-O bonds using...
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