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A 9.52 x 10-^5 mol sample of rubidium-86 emits 8.87 x 10^16 deta particles in one...
My Note 9. 1.25/10 points Previous Answers OContent 1 mol 6.022 x 10 particles E Problem...
My Note 9. 1.25/10 points Previous Answers OContent 1 mol 6.022 x 10 particles E Problem A You have a 4.4 mol pure sample of an unknown material. After 4.6 h, you discover that 14% has decayed. Determine the half-life, decay constant, mean life, & initial decay rate. Also determine what the decay rate is at 4.6 h. T1221.1405h |ь1 R decays/h R= decays/h O Problem B The decay rate of a radioactive source decreases by 2% in 17 h....
16) 16. Which of the following represents y as a one-to-one function of x? A) y...
16) 16. Which of the following represents y as a one-to-one function of x? A) y = x+ B) y = x3 C) {(3,4),(4,5),(5,6), (6,6)} D) x = y2 E) None of the Above x+3 (x-1)(x-3)? 17) 17. Which best describes the intercepts for the graph of g(x) = A) x-intercept at x = -3 and y-intercept at y = 1 B) x-intercepts at x = 1 and x = 3 and y-intercept at y = -3 C) x-intercepts at...
What would be for the mol reacted,, mol NH4X in sample, and yhr average molar mass?...
What would be for the mol reacted,, mol NH4X in sample, and yhr
average molar mass?
CALCULATIONS A. NaOH Preparation: Approximate molarity of NaOH 0.48 M B. NaOH Standardization: Trial # Mass of KHP E 1.7249 1.9569 1.8799 Volume of NaOH 18.58 L 20.58mLihat 19.71 mL Molarity of NaOH 0.4544 M 0.4654M 0. 3 M 0.4668M Average molarity of NaOH: 0.4668 M 0.4622 M C. Molar Mass of NH X Salt 1. Volume of NaOH 0.025 0.025 0.025L 2. Molarity...
this is the rest of one of the problems can you please help (e) For each...
this is the rest of one of the problems can you please help
(e) For each pairing, circle the system (State 1 or State 2) that has the higher entropy (or choose “SAME"). Assume that T and P are the same for each system unless stated otherwise. **NOTE: You must make THREE circles here--this is not a "multiple choice" question.** State 1 State 2 i) 1 mol Na(s) OR 1 mol Li(s) OR SAME ii) 2 mol CH4(g) in 10...
Consider the reaction X Y +Z Which of the following is a possible rate law? a)...
Consider the reaction X Y +Z Which of the following is a possible rate law? a) Rate = k[X] b) Rate = K[Y] c) Rate = k[Y][Z] Rate = k[X][Y] Rate = k[Z] e) Rate 3. What are the units for the rate constant for an overall third order reaction? a) L/mol:s b) LP/mol.s mol/L'S e) L2 For which order reaction is the half-life of the reaction inversely proportional to k, the rate constant? a) zero order b) first order...
5) How many moles of hydrogen gas are needed to react with oxygen to form one...
5) How many moles of hydrogen gas are needed to react with oxygen to form one mole of 5) water? 2H2(8) + O268) - 2H20(1) A) 4 mol B) 1 mol C) 2 mol D) 0.5 mol E) 6 mol 6) Incomplete combustion occurs when there is insufficient oxygen to react with a compound. The suffocating gas carbon monoxide is a product of incomplete combustion. How many moles of oxygen gas are required for the complete combustion of 11.0 moles...
Chemistry, Nutrition, and Digestion UNIT 2 COOPERATIVE HOMEWORK ASSIGNMENT #1 (10 points) Questions are worth 1/2...
Chemistry, Nutrition, and Digestion UNIT 2 COOPERATIVE HOMEWORK ASSIGNMENT #1 (10 points) Questions are worth 1/2 point each unless marked otherwise Names of Group Members (list names in ALPHABETICAL ORDER) (recall) Fill in the blank with the most appropriate term. The negatively charged particles of an atom are called The positively charged particles of an atom are called How a substance will react with other chemicals is determined by the number of electrons in its An ionic compound that absorbs...
THERES MORE THAN ONE PICTURE. I NEED ALL ANSWERED THANK YOU QUESTION 2 Calculate the pOH...
THERES MORE THAN ONE PICTURE. I NEED ALL ANSWERED THANK
YOU
QUESTION 2 Calculate the pOH of a solution at 25.0°C that contains 2.95 x 10-12 M hydronium ions. 2.95 O 11.53 12.00 O 7.00 2.47 QUESTION 1 An aqueous solution at 25.0°C contains [H') -0,085 M. What is the pH of the solution? O 13.0 O 0.9850 O 1.07 O 1.20 10-13 O -1.07 QUESTION 2 10-12 M hydronium ions. Calculate the pOH of a solution at 25.0°C that...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
its separted into two pictures QUESTION 16 10 points The one-way ANOVA can be modeled as Use the following data to find the estimated treatment effect for "green". I green x-factor...
its
separted into two pictures
QUESTION 16 10 points The one-way ANOVA can be modeled as Use the following data to find the estimated treatment effect for "green". I green x-factor (o("green". "green". v-e(1.26, 1.274, 1.259, 1.743, 1.698, 1.6as) What is the value for t green? green", "biue", "blue*,"blue) O -0.221333 O 2.1514 O -0.4427 O 1.266 ¥ Question Completion Status: QUESTION 14 A simple linear regression model has a sample size of 15. What are the degrees of freedom...
My Note 9. 1.25/10 points Previous Answers OContent 1 mol 6.022 x 10 particles E Problem A You have a 4.4 mol pure sample of an unknown material. After 4.6 h, you discover that 14% has decayed. Determine the half-life, decay constant, mean life, & initial decay rate. Also determine what the decay rate is at 4.6 h. T1221.1405h |ь1 R decays/h R= decays/h O Problem B The decay rate of a radioactive source decreases by 2% in 17 h....
16) 16. Which of the following represents y as a one-to-one function of x? A) y = x+ B) y = x3 C) {(3,4),(4,5),(5,6), (6,6)} D) x = y2 E) None of the Above x+3 (x-1)(x-3)? 17) 17. Which best describes the intercepts for the graph of g(x) = A) x-intercept at x = -3 and y-intercept at y = 1 B) x-intercepts at x = 1 and x = 3 and y-intercept at y = -3 C) x-intercepts at...
What would be for the mol reacted,, mol NH4X in sample, and yhr
average molar mass?
CALCULATIONS A. NaOH Preparation: Approximate molarity of NaOH 0.48 M B. NaOH Standardization: Trial # Mass of KHP E 1.7249 1.9569 1.8799 Volume of NaOH 18.58 L 20.58mLihat 19.71 mL Molarity of NaOH 0.4544 M 0.4654M 0. 3 M 0.4668M Average molarity of NaOH: 0.4668 M 0.4622 M C. Molar Mass of NH X Salt 1. Volume of NaOH 0.025 0.025 0.025L 2. Molarity...
this is the rest of one of the problems can you please help
(e) For each pairing, circle the system (State 1 or State 2) that has the higher entropy (or choose “SAME"). Assume that T and P are the same for each system unless stated otherwise. **NOTE: You must make THREE circles here--this is not a "multiple choice" question.** State 1 State 2 i) 1 mol Na(s) OR 1 mol Li(s) OR SAME ii) 2 mol CH4(g) in 10...
Consider the reaction X Y +Z Which of the following is a possible rate law? a) Rate = k[X] b) Rate = K[Y] c) Rate = k[Y][Z] Rate = k[X][Y] Rate = k[Z] e) Rate 3. What are the units for the rate constant for an overall third order reaction? a) L/mol:s b) LP/mol.s mol/L'S e) L2 For which order reaction is the half-life of the reaction inversely proportional to k, the rate constant? a) zero order b) first order...
5) How many moles of hydrogen gas are needed to react with oxygen to form one mole of 5) water? 2H2(8) + O268) - 2H20(1) A) 4 mol B) 1 mol C) 2 mol D) 0.5 mol E) 6 mol 6) Incomplete combustion occurs when there is insufficient oxygen to react with a compound. The suffocating gas carbon monoxide is a product of incomplete combustion. How many moles of oxygen gas are required for the complete combustion of 11.0 moles...
Chemistry, Nutrition, and Digestion UNIT 2 COOPERATIVE HOMEWORK ASSIGNMENT #1 (10 points) Questions are worth 1/2 point each unless marked otherwise Names of Group Members (list names in ALPHABETICAL ORDER) (recall) Fill in the blank with the most appropriate term. The negatively charged particles of an atom are called The positively charged particles of an atom are called How a substance will react with other chemicals is determined by the number of electrons in its An ionic compound that absorbs...
THERES MORE THAN ONE PICTURE. I NEED ALL ANSWERED THANK
YOU
QUESTION 2 Calculate the pOH of a solution at 25.0°C that contains 2.95 x 10-12 M hydronium ions. 2.95 O 11.53 12.00 O 7.00 2.47 QUESTION 1 An aqueous solution at 25.0°C contains [H') -0,085 M. What is the pH of the solution? O 13.0 O 0.9850 O 1.07 O 1.20 10-13 O -1.07 QUESTION 2 10-12 M hydronium ions. Calculate the pOH of a solution at 25.0°C that...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
its
separted into two pictures
QUESTION 16 10 points The one-way ANOVA can be modeled as Use the following data to find the estimated treatment effect for "green". I green x-factor (o("green". "green". v-e(1.26, 1.274, 1.259, 1.743, 1.698, 1.6as) What is the value for t green? green", "biue", "blue*,"blue) O -0.221333 O 2.1514 O -0.4427 O 1.266 ¥ Question Completion Status: QUESTION 14 A simple linear regression model has a sample size of 15. What are the degrees of freedom...
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