## Question

###### 0-/0.1 points0/4 Submissions Usedbuffer solution contalns 37 mol of hydrocyanlc acld (HCN) ad 0.58 mol of sodlum cyanlde (NaCN) In 8.00 The Ka of hydrocyanlc acid (HCN) Is Ka 9e-10.(a) What Is the pH of thls buffer?(b) What the pH of the buffer after the additlon of 0.32 mol of NaOH? (assume no volume change)(c) What is the pH of the origina buffer after the additlon of 0.13 mol of HI? (assume no volume change)

0-/0.1 points 0/4 Submissions Used buffer solution contalns 37 mol of hydrocyanlc acld (HCN) ad 0.58 mol of sodlum cyanlde (NaCN) In 8.00 The Ka of hydrocyanlc acid (HCN) Is Ka 9e-10. (a) What Is the pH of thls buffer? (b) What the pH of the buffer after the additlon of 0.32 mol of NaOH? (assume no volume change) (c) What is the pH of the origina buffer after the additlon of 0.13 mol of HI? (assume no volume change)

## Answers

#### Similar Solved Questions

5 answers

##### 21. Given the subspace V = Spanllz,-3,4) (-1,S,3)}orR' Determine whether the vector(3,- 1,11) lies in that = subspace and justify your answer b) Find a basis for and concludedim()

21. Given the subspace V = Spanllz,-3,4) (-1,S,3)}orR' Determine whether the vector(3,- 1,11) lies in that = subspace and justify your answer b) Find a basis for and concludedim()...

5 answers

##### For problem below; assume the population is normally distributed:boltled water association says the mean number of 8-ounce glasses of water American adults drink each day is less than 5.0. The number of 8-ounce glasses of water random sample of 24 American adults drank in one day is listed_ Ata = 0.05, there enough evidence to support the association claim?3.64.53.6 3.12.,5 6.05.63.02.627 2.9 Identify the null and alternate hypotheses Also state the level of significance. Find the test statistic

For problem below; assume the population is normally distributed: boltled water association says the mean number of 8-ounce glasses of water American adults drink each day is less than 5.0. The number of 8-ounce glasses of water random sample of 24 American adults drank in one day is listed_ Ata = 0...

5 answers

##### It has been found that B-dicarbonyl compounds have a greater concentration of the enol form over the keto form: This can be explained by: the C-C of the enol is conjugated with the carbonyl group. the-OH of the enol can hydrogen bond to the oxygen of the nearby carbonyl group. both ofthese answers are true none of the choices are trueHow could you perform the following crossed-Aldol reaction to obtain the product selectively?OHA. Use sodium methoxide. Bs_ Use potassium tert-butoxide_ C Use aceti

It has been found that B-dicarbonyl compounds have a greater concentration of the enol form over the keto form: This can be explained by: the C-C of the enol is conjugated with the carbonyl group. the-OH of the enol can hydrogen bond to the oxygen of the nearby carbonyl group. both ofthese answers a...

5 answers

##### Point) Let A =Determine the values of x and Y for which A? = A. -3

point) Let A = Determine the values of x and Y for which A? = A. -3...

5 answers

##### 1. Find the Laplace Transform of: -5t+1 a) f(t) Vztb) f(t) = (St - 3)u3(t)

1. Find the Laplace Transform of: -5t+1 a) f(t) Vzt b) f(t) = (St - 3)u3(t)...

5 answers

##### 11. Which pairs of fractions are equivalent to ? and 52 .5 8"i12 and 15 18 188and 12 1216 and 24 24

11. Which pairs of fractions are equivalent to ? and 52 .5 8"i 12 and 15 18 18 8and 12 12 16 and 24 24...

5 answers

##### Use physics 2 wl algebra knowledgeWave Mean Trial| Frequency Wavelength velocity wave velocity 0.2 Hz 5.0 cm 1.0 cmls 0.62 cm/s 2 0.4 Hz 0.5 cm 0.2 cmls 0.6 Hz 1.0 cm 0.6 cm/s 0.8 Hz 1.0 cm 0.8 cmls 1.0 Hz 05 cm 0.5 cms Suppose the mass of the string in the simulation is 400g, estimate the tension force for both settings from the data you have collected above,

Use physics 2 wl algebra knowledge Wave Mean Trial| Frequency Wavelength velocity wave velocity 0.2 Hz 5.0 cm 1.0 cmls 0.62 cm/s 2 0.4 Hz 0.5 cm 0.2 cmls 0.6 Hz 1.0 cm 0.6 cm/s 0.8 Hz 1.0 cm 0.8 cmls 1.0 Hz 05 cm 0.5 cms Suppose the mass of the string in the simulation is 400g, estimate the tension ...

5 answers

##### Sample of helium is initially at 645 torr in volume of 2.85At24.7 "Cyou found Ihe density of He to be 0.139 g/L and the densily of Ar to be 1.39 g/L even though both samples had the same number of moles, Which one of the following best explains why the densities are different?Argon is heavier atom than helium; sO has more mass in the same volume occupied by (he gasB) Argon is Iarger alom than helium so occupies more volumeC) An argon atom is more dense Ihan helium atom:D) The densities are

sample of helium is initially at 645 torr in volume of 2.85 At24.7 "Cyou found Ihe density of He to be 0.139 g/L and the densily of Ar to be 1.39 g/L even though both samples had the same number of moles, Which one of the following best explains why the densities are different? Argon is heavier...

5 answers

##### Use Lagrange multipliers to find the maximum and minimum values of the function f(x,y,2) =x2+y2 + 22 subject to the constraint x +y +2 = 12 80,412)

Use Lagrange multipliers to find the maximum and minimum values of the function f(x,y,2) =x2+y2 + 22 subject to the constraint x +y +2 = 12 80,412)...

5 answers

##### Consider set P described by linear inequalities constraints, that is P = {" â‚¬ Rn ai < bi,iPage 2 of 3m}_ ball with center y and radius is defined as the set of all points within (Euclidean) distance from y. We are interested in finding ball with largest possible radius, which is entirely contained within the set P_ Provide a linear programming formulation of the problem_

Consider set P described by linear inequalities constraints, that is P = {" â‚¬ Rn ai < bi,i Page 2 of 3 m}_ ball with center y and radius is defined as the set of all points within (Euclidean) distance from y. We are interested in finding ball with largest possible radius, which is en...

5 answers

##### Question 42 ptsIf the standard error of the mean is 10 years of experience for a sample of consisting of 40 workers, what is the probability that the sample mean will not exceed 22 years for a population with a mean of 17 years experience_ YOUR ANSWER SHOULD BE BETWEEN 0 AND 100 AND ROUNDED TO 4 DECIMAL PLACES. (e.g: 59.5321 would be 59.5321%)

Question 4 2 pts If the standard error of the mean is 10 years of experience for a sample of consisting of 40 workers, what is the probability that the sample mean will not exceed 22 years for a population with a mean of 17 years experience_ YOUR ANSWER SHOULD BE BETWEEN 0 AND 100 AND ROUNDED TO 4 D...

5 answers

##### 3 3 3 3ETh +uth? Ct3 Vx+h -Vx + h 'R + '5Fh !VGthy?

3 3 3 3ETh +uth? Ct3 Vx+h -Vx + h 'R + '5Fh !VGthy?...

5 answers

##### 4) Halla un operador diferencial que anule la siguiente funcion coS 2x + 3xe 6r

4) Halla un operador diferencial que anule la siguiente funcion coS 2x + 3xe 6r...

4 answers

##### A 112 0kg prefabricated slab is hoisted by rope The air resistance iS pushing on Ihe slab with the force 698.3 N at an angle of 18.0 below the X-axis The only other force acting on the slab the tension in Ihe rope: The slab is moving at a constant velocity of 0.4 mph: What is the magnitude of the tension?Answer 1314 5N

A 112 0kg prefabricated slab is hoisted by rope The air resistance iS pushing on Ihe slab with the force 698.3 N at an angle of 18.0 below the X-axis The only other force acting on the slab the tension in Ihe rope: The slab is moving at a constant velocity of 0.4 mph: What is the magnitude of the te...

5 answers

##### 14. Use the words 'stronger, weaker, lower or higher' appropriately in the blanks below: Higher the Ka ofan acid; its pKa and the Kb of its conjugate base _ Higher the Ka ofan acid, the acid; [H+]; its pH andits pOH15. Without doing any calculations, predict which of the following solutions 0.10 M HNOz; Ka 45*10 0.10 M CH,COOH; Ka = L8 x 10 0.10 M HCN; Ka 49x10 10has the lowest pH?becausehas highest pKa?becausehas lowest [OH -]because_

14. Use the words 'stronger, weaker, lower or higher' appropriately in the blanks below: Higher the Ka ofan acid; its pKa and the Kb of its conjugate base _ Higher the Ka ofan acid, the acid; [H+]; its pH and its pOH 15. Without doing any calculations, predict which of the following soluti...

5 answers

##### Two planets P1 and P2 orbit around a star S in circular orbitswith speeds v1 = 40.6 km/s, and v2 = 59.4 km/s respectively. (a) Ifthe period of the first planet P1 is 750 years what is the mass, inkg, of the star it orbits around? kg (b) Determine the orbitalperiod, in years, of P2. yr

Two planets P1 and P2 orbit around a star S in circular orbits with speeds v1 = 40.6 km/s, and v2 = 59.4 km/s respectively. (a) If the period of the first planet P1 is 750 years what is the mass, in kg, of the star it orbits around? kg (b) Determine the orbital period, in years, of P2. yr...

5 answers

##### WIl & W1g arca 01If a swimmer in fresh water (density 1,000 kglm'> has a volume of 0.0750 m' what is the buoyant force (in N) on the swimmer when they are completely submerged?10. A flat-bottomed aluminum fishing boat has a mass of 60 kg and an area of 4.0 m? When it is launched into the water (density 1,000 kglm_ ) how far (in m) below the surface of the water does the bottom of the boat sink?I.A fisherman and his buddy climb into the boat in the previous problem. If they; alon

WIl & W1g arca 01 If a swimmer in fresh water (density 1,000 kglm'> has a volume of 0.0750 m' what is the buoyant force (in N) on the swimmer when they are completely submerged? 10. A flat-bottomed aluminum fishing boat has a mass of 60 kg and an area of 4.0 m? When it is launched i...

5 answers

##### A "surge function" is used in a wide range of mathematical models of real-world phenomenon, such as the level of medication in the bloodstream after an initial dose of a drug: A general surge function is given byS(t) Atewhere A,k are both positive constants Find the point of inflection of S(t).

A "surge function" is used in a wide range of mathematical models of real-world phenomenon, such as the level of medication in the bloodstream after an initial dose of a drug: A general surge function is given by S(t) Ate where A,k are both positive constants Find the point of inflection o...

5 answers

##### The center of a cube that measures Zcm Zcm X Zcm (a volume of Scm is [3cm from convex lens of focal length ]Oem a. What is the volume Of the image? b. If the center is also moving away Irom the lens ata rate of Imls_ at what rate is the image moving?

The center of a cube that measures Zcm Zcm X Zcm (a volume of Scm is [3cm from convex lens of focal length ]Oem a. What is the volume Of the image? b. If the center is also moving away Irom the lens ata rate of Imls_ at what rate is the image moving?...

5 answers

##### 7.31<AMEExitQuestion 31 ptsFind the Wronskian ofJ (x) =andJ2 (x) = e2x(2x + 3)x"e(2x - 3)x"e3x" 2eex

7.31< AME Exit Question 3 1 pts Find the Wronskian of J (x) = and J2 (x) = e2x (2x + 3)x"e (2x - 3)x"e 3x" 2eex...