# Calculate the pH of the solute in an aqueous solution of 0.0047 M codeine, if the pKa of itsconjugate acid is 8.21. What is the percentage protonation of the solute?

46,915 questions, page 434-
## Maths2

A plane leaves an airport X,20.6degree east and 36.8 degree north,and flies due south along the same longitude for 8hrs at the rate of 1000km/h to another airport Y,20.6 degree east and tita degree south.the plane then flies west to another airport Z for

*asked by Tosin on November 23, 2012* -
## Physics

What quantitative information do you need to calculate each of the measurements of an object's motion Displacement: Average velocity: Average acceleration: Displacement: Final position minus initial position Average velocity: Displacement divided by time

*asked by Tpark on December 20, 2006* -
## chemistry

hi, I am trying to find the solubility of Sodium Acetate by using 0.100 mol Hydroxide(base) and 0.837 mol acetic acid( vinegar). The theoretical solubility of sodium acetate is 82.3g/100ml at 25C. Doing calculations we would want NAOH concentration of

*asked by john on June 3, 2008* -
## chemistry

Hi. I have a little problem with my chemistry task. I have 4 unknown solutions: 1 light blue (A),1 green (B), 2 without colour (C & D). As I understood that the blue one is CuSO4, green one is NiCl2, but 1 uncoloured is NH3, then... A - CuSO4 [couldn't ir

*asked by Ksenija on December 27, 2008* -
## Chemistry

If the thermometer reads 22 c and this corresponds to 19.8mmhg of water pressure , what is the pressure of a pure gas collected over water if the total pressure is 760 mmhg?next calculate the pressure of the gas and lets assume its hydrogen gas in atm.

*asked by Flor on March 25, 2017* -
## Chemistry

Another Equilibrium Question! The following reaction is at equilibrium in a closed 20.0-L container. At equilibrium, the pressures of NH3 and HCl are both equal to 0.00552 atm, and the mass of NH4Cl (s) is 35.4 g. Calculate the equilibrium pressure of NH3

*asked by Raskin on March 19, 2012* -
## physics

A student investigates the interference of light in a Young’s double slit experiment. i). Explain why there is no interference pattern if the two slits are 5.0 cm apart. ii). Explain why it is better for the student to observe the interference patterns

*asked by aiman on August 15, 2015* -
## physics

At the intersection of Texas Avenue and University Drive, a blue, subcompact car with mass 820 kg traveling east on University collides with a maroon pickup truck with mass 2000 kg that is traveling north on Texas and ran a red light. The two vehicles

*asked by help! on February 20, 2018* -
## science

Arrange the following from the most work to the least. For each instance, calculate the total amount of work done. Show all calculations, including units of measure. 1. pushing a box of math books weighing 600 newtons a distance of 20 meters -12000J 2.

*asked by anonymous on November 5, 2009* -
## Chemistry (Help)

Calculate the DHrxn of C57H110O6 (s) + O2(g) --> CO2(g) + H2O(l) with DHf. C57H110O6(s) -390.70 O2(g) 0 CO2(g) -393.5 H2O(l) -285.840 I balanced the equation: 2C57H110O6 (s) + 163O2(g) --> 114CO2(g) + 110H2O(l) and my work: DHrxn =

*asked by Anonymous on November 17, 2015* -
## math

For a party, Mary has to bake 5 cakes, 3 pies, and 4 trays of cookies. One cake requires 2.5 cups of flour, one pie requires 1.25 cups of flour, and one tray of cookies needs 0.75 cups of flour. How much flour in all does Mary need to do the baking for the

*asked by anonymous on February 9, 2011* -
## probability self study

each of three identical jewelry boxes has two drawers. in each drawer of the first box there is a gold watch. in each drawer of the second box there is a silver watch. in one drawer of the third box there is a gold watch while in the other there is a

*asked by Woody on May 19, 2015* -
## physics

Here's a physics problem. I don't care about the answer, i just want to know how to do it. don't have to be too detailed.. but i don't really kno how to start this 1.) A model rocket blasts off from the ground rising straight upward with a constant

*asked by jo on September 18, 2010* -
## Math Help

A recipe calls for 3 cups of flour to make 3 dozen cookies. Use the proportion to calculate how much flour is needed to make 9 dozen cookies. 3 cups/3 dozen= x cups/9 dozen A. 6 cups B. 3.5 cups C. 9 cups D. 12 cups Is the answer C? Thank you

*asked by callie on November 20, 2014* -
## math

A recipe calls for 2 cups of flour to make 2 dozen cookies. Use the proportion to calculate how much flour is needed to make 6 dozen cookies. 2 cups/2 dozen= x cups/6 dozen A. 2 cups B. 4 cups C. 6 cups D. 12 cups Is the answer C?

*asked by MATH help on March 24, 2015* -
## programming

Having troube with java, i am not a regular programmer, if anybody can help me out writting this program: write a program that takes two numbers from the java console representing, respectively, an investment and an interest rate(you will expect the user

*asked by John on February 4, 2010* -
## Chemistry

2KMnO4(aq)+16HCl(aq)->2MnCl2(aq)+5Cl2(g)+8H2O(l)+2KCl(aq) A.)the volume of 0.414 M KMnO4 needed to produce 1.66 mol MnCl2 B.) the volume of 2.15 M HCl needed to produce 112 mL of 0.618 M KCl C.)the molarity (M) of the HCl solution when 26.42 mL react with

*asked by Anonymous on December 10, 2010* -
## Physics B

Part 1 Calculate the magnitude of the linear momentum for each of the following cases: A proton with mass 1.67×10 −27 kg moving with a speed of 5.24 × 10 6 m/s. Answer in units of kg · m/s Part 2 A 15.1 g bullet moving with a speed of 327 m/s. Answer

*asked by Mary on November 12, 2012* -
## Bachelor of computer science

A program is required to calculate the weekly pay for an employee. The pay clerk inputs an employee ID, hours worked and an hourly rate. The program will output the employee ID, and Gross Pay. Gross Pay is the sum of regular pay plus any overtime pay

*asked by Tanzina on April 13, 2017* -
## College Chemistry (Hard)

The easiest fusion reaction to initiate is 1-1H + 1-1H------> 4-2He + 1-0 n The 1-1 indicates a small one above the other on the left side of the symbol of the element.So for 1-0n is a one above a zero on the left side of n (neutron). The number on the top

*asked by Jim on April 5, 2010* -
## geological radioactivity

What ihe basis for the determination of Uranium 238-Lead radiometric date of 1120 ma for granite Wouldn't it be the ratio of U238 and lead in the granite? I do not think so, i have actually answer the question explaing it in words but i am not sure of it

*asked by bonita on March 28, 2007* -
## chemistry

Strong base is dissolved in 665 mL of 0.400 M weak acid (Ka = 3.69 × 10-5) to make a buffer with a pH of 3.94. Assume that the volume remains constant when the base is added. HA(aq) + OH-(aq) -> H2O(l) + A-(aq) Calculate the pKa value of the acid and

*asked by craig on July 8, 2012* -
## Biology

A cell has a salt concentration of 0.2 %. If it is placed into a solution with a salt concentration of 0.1 %. a) What change will occur to the salt concentration inside the cell? b)What change will occur to the water concentration inside the cell? c)What

*asked by Emily on October 18, 2010* -
## math

The fuel rods for a certain type of nuclear reactor are bundled into a cylindrical shell. Consider this cross-section showing 19 identical fuel rods: a) If the diameter of the cylindrical shell is 12.35 cm, calculate the shaded area of the cross-section.

*asked by gaurav on October 10, 2011* -
## Chemistry

For the reaction: 2NO(g) + H2(g) N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. I wrote: [N2O][H2O] / [NO]2 [H2] This reaction takes place at 25°C. At this temperature the concentration of NO is found to be 1.75

*asked by Kat on April 13, 2016* -
## PHYSICS

The surface area A of a sphere of radius R is given by the equation A = 4pi*R2, where pi equals 3.1416 (to 5 digits). Calculate the area of a sphere which has a radius of 2 m. If 2600 grains of sand are uniformly spread out on the surface of the sphere,

*asked by Anonymous on October 2, 2018* -
## math

how would this equation look: y=f(x+3) when y=f(x)= x^2 would it look like so.... x^2(x+3) adam, there's a slight problem with your notation in the expression y = f(x+3). Ordinarily we wouldn't put an expression in place of a variable, unless we were

*asked by adam on July 6, 2006* -
## 7th grade Math quick help Ms. Sue

Can you check to see if tese are right? 1. What is 0.68 written as a simplified fraction? 68/100 17/25 100/68 34/25 2. Mrs. Whimsey’s class is having a pizza party. If there are 16 students and 4 pizzas cut into 8 slices, what answer choice represents

*asked by Delilah on October 3, 2012* -
## Math

What is the value of a stock that grows at a supernormal rate of 18% for the first four years, and then slows down to a constant growth rate of 10%? An annual dividend of $2.00/share was just paid, and the rate of return on common stock is 13%. Possible

*asked by Lyra on June 23, 2017* -
## MIT 2.01X

We will obtain bending moment diagrams for three beams and calculate stresses inside the beams. For each beam, take the x-axis along the neutral axis of the beam, oriented from left to right, with origin at A. HW7_1A_1 : 5.0 POINTS For the beam above,

*asked by Uncle SAM on June 25, 2013* -
## chemistry

At 298 K, 1.35 mol BrCl(g) is introduced into a 12.0 L vessel, and equilibrium is established in the reaction. BrCl(g)-->0.5Br2(g) + 0.5Cl2(g) Calculate the amount of BrCl(g) present when equilibrium is established.(Use delta G[Br2(g)]=3.11kJ/mol and delta

*asked by ian on March 24, 2012* -
## Algebra

Please help me solve this problem the kinetic energy (k) energy of a moving object with varies jointy with it mass (m) and the squareo of its velocity (v). If an object has an mass of 22.5 kilograms and moving with a velocity of 20 meters per secomd has a

*asked by rosa on May 23, 2010* -
## Math

Asked to simplify the expression sin(180Ã¢Ë†â€™ÃƒÂ¨), Rory volunteered the following solution: sin(180Ã¢Ë†â€™ÃƒÂ¨) = sin 180Ã¢Ë†â€™sin ÃƒÂ¨, and, because sin 180 is zero, it follows that

*asked by Anonymous on January 3, 2017* -
## joint heirs college, Fola agoro, shomolu Lagos.

CHEMISTRY (1) What is the equation for reaction when calcium oxide and coke are heated in electric furnace (2) what solid remains when the following is heated-(a) lithium trioxonitrate (v), (b) potassium trioxonitrate (v), (c) calcium trioxonitrate (v).

*asked by Agunlejika Precious on October 15, 2015* -
## Chemistry

EQUILIBRIUM: To prepare the standard solution, a very large concentration of ferric ion is added to a small initial concentration of thiocyanate ion. True or False It would help if we knew what you were doing. We are determining Chemical Equilibrium:

*asked by Joe on January 31, 2007* -
## Visual Basic (Computer Programming)

ALGORITHM EXERCISES 1. Wilma Peterson is paid by the hour. She would like a program that both calculates and displays her weekly gross pay. For this exercise, you do not need to worry about overtime pay, as Wilma never works more than 40 hours in a week.

*asked by Erick on January 16, 2013* -
## chem 12

for the equilibrium 2HI(g)--- H2(g) + I2 k eq = 8.0 2.0 mol of HI are placed in a 4.0 L container, and the system is allowed to reach equilibrium. Calculate the equilibrium concentration of all three gases. Inital 2HI 0.5mol/l H2 =0 I2=0 change 2HI= -2x

*asked by George on March 10, 2016* -
## chemistry

Follow the steps provided in the simulation to add water to the graduated cylinder, select one of the three samples (copper, silver, or gold), set its mass to the values given in the statements below, find its volume, and calculate its density. To save

*asked by fatimah on September 21, 2011* -
## science

A combination of two prism one of flint &other of crown glass produces dispersion without deviation.The angle of the flint glass prism is 15degree . Calculate the angle of crown glass prism & the dispersion separation of red & violet rays an emergence from

*asked by apurv on August 24, 2015* -
## physics =(

A person on a small, 7.00 meter high, hill aims a water-balloon slingshot straight at a friend hanging from a tree branch 4.00 meters above and 6.00 meters away. At the instant the water balloon is released at 7.00 m/s, the friend lets go and falls from

*asked by Jordan on December 12, 2009* -
## organic chemistry laboratory

hi, im not sure if all my answers are correct especially number 5. could any one check and tell me? please and thank you. 1. Why is it important to have clean test tubes before running a test? Before which tests should acetone not be used to clean the test

*asked by Niah on November 2, 2014* -
## organic chemistry laboratory

hi, im not sure if all my answers are correct especially number 5. could any one check and tell me? please and thank you. 1. Why is it important to have clean test tubes before running a test? Before which tests should acetone not be used to clean the test

*asked by Niah on November 4, 2014* -
## Physics

A stone is dropped from the top of a cliff and hits the round below with a speed of 50m/s. Assume that the acceleration due to gravity is 10m/s/s. Find it's mean speed, in m/s, during the fall. Do not include units when typing your answer into the box.

*asked by Phil on November 4, 2015* -
## chemistry

1. Given that 50 grams of ice is heated at -20.0 °C to steam at 135.0 °C. i. Show the graph of the changes from ice to steam ii. Calculate the energy needed to change the ice to steam Please use these values: Heat of fusion = 334.16 J g¯1 Heat of

*asked by bliss on March 9, 2016* -
## Statistics

The table below shows the LOS for a sample of 11 discharged patients. Using the data in the table, calculate the mean, range, variance, and standard deviation, and then answer questions e and f. Round the variance and standard deviation to one decimal

*asked by Anonymous 11/9/13 on November 9, 2013* -
## Chemistry

Hello, I am having trouble with a question from my chem lab. Here is my data Weight of empty crucible and cover = 21.113 g Weight of crucible, cover, MgO and Mg3N2 = 21.906 g Weight of crucible, cover, MgOand addition of H2O and heat =21.909 g The change

*asked by Steve on September 23, 2008* -
## algebra

The Answer is (32/20)^2=2.56times the kinetic enrgy at 20 m/s 2.56x4500 Problem The kinetic energy (k) of moving object varies jointly with it mass (m) and the square of its velocity(v). If an object has a mass of 22.5 kilgorams and moving with a velocity

*asked by rosa on May 23, 2010* -
## PHYSICS

A tuning fork of frequency 558 Hz is placed near the top of the pipe shown in the Figure. The water level is lowered so that the length L slowly increases from an initial value of 20.0 cm. Determine the next two values of L that correspond to resonant

*asked by JAY on June 18, 2007* -
## physics

1)A hiker throws a ball at an angle of 21.0 above the horizontal from a hill 21.0 m high. The hiker's height is 1.750 m. The magnitudes of the horizontal and vertical components are 14.004 m/s and 5.376 m/s, respectivley. Find the distance between the base

*asked by Anonymous on April 16, 2008* -
## Improving your writing

BACKGROUND: Ten years ago, I started working as a clerk for DMD Medical Supplies. Six months ago, Liz, the human resources director, promoted me to office manager. I manage two employees: Jack and Ruth. My office provides secretarial support for the four

*asked by Kayla on March 29, 2012* -
## Physics...please help

A beam of light passes from air to ethanol, with index of refraction of 1.36. If the angle of incidence ( 1) is 30.0 degrees, then calculate the angle of refraction, after light passes through ethanol and enters into air. A. 15.3 degrees B. 21.6 degrees C.

*asked by sophie on April 6, 2009* -
## physics

An airplane with a speed of 85.3 m/s is climbing upward at an angle of 45.0 ° with respect to the horizontal. When the plane's altitude is 587 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly

*asked by S on September 19, 2014* -
## accounting

Mr. Jones intends to retire in 20 years at the age of 65. As yet he has not provided for retirement income, and he wants to set up a periodic savings plan to do this. If he makes equal annual payments into a savings account that pays 4 percent interest per

*asked by matt on June 10, 2009* -
## AP Chemistry

So I already posted this question earlier today and got a reply but now that Im working through it, its not working. What mass of solid sodium formate (of MW 68.01) must be added to 130 mL of 0.63 mol/L formic acid (HCOOH) to make a buffer solution having

*asked by Helpmepls on January 16, 2018* -
## Chemistry(Please help!!)

For a chemistry lab the experiment was to carry out an acid-base titration to determine the exact concentration of a sodium hydroxide solution. Two trials were completed and the data collected was: mass of weighing paper, mass of weighing paper + KHP, mass

*asked by Hannah on October 23, 2011* -
## Chemistry

For a chemistry lab the experiment was to carry out an acid-base titration to determine the exact concentration of a sodium hydroxide solution. Two trials were completed and the data collected was: mass of weighing paper, mass of weighing paper + KHP, mass

*asked by Hannah on October 23, 2011* -
## chemistry

the solubility of AgCl in HCl is a. low, as Cl- ions cause an equilibrium shift towards the solid form b. low, as Ag+ has already reacted with Cl- c. high, as HCl readily ionizes d. high, as AgCl can then form e. high, as H2 forms, then escapes (a) The

*asked by Mary on April 21, 2007* -
## English

For homework I have to answer the following questions regarding Puerto Rican obituary by Pedro pietri but I am horrible at interpreting poems if someone can please help thank you "Puerto Rican Obituary", by Pedro Pietri: What has the American dream turned

*asked by Jessica on May 23, 2013* -
## Math

The solution set of radical(x - 1) (is greater than sign) 5 is the set of all real numbers x such that: F. x (is greater than sign) 4 G. x (is greater than sign) 6 H. x (is greater than sign) 24 J. x (is greater than sign) 25 K. x (is greater than sign) 26

*asked by Anonymous on May 3, 2015* -
## Physics

(1)A battery drives 60c of charge in a circuit for 20s. Thecurrent in the circuit is?(2)What is the volume of a block of expanded polystyrene of 400g and density 16kg/m3?(3)The velocity of a toy car of mass 2kg increased from 5m/s to 10m/s in 2seconds.What

*asked by kingstone on March 19, 2013* -
## phy

(Q1)What is the orbital radius and speed of a synchronous satellite which orbits the earth once every 24h? Take G=0.0000000000667Nm2/kg2. Mass of the earth is 598000000kg (a)4200000m and 31000m/s (b)5600000m and 4300m/s (c)430000m and 5000m/s(d)3400000m

*asked by ikye on July 5, 2013* -
## Physics

A 25.0-g metal cylinder is placed on a turntable, with its center 70 cm from the turntable's center. The coefficient of static friction between the cylinder and the turntable's surface is μs = 0.71. A thin, massless string of length 70 cm connects the

*asked by Charlie on October 7, 2014* -
## Physics

The Hubble Space Telescope (HST) has recorded evidence of a black hole at the center of the M87 galaxy. Using Doppler data, it's been measured that matter is orbiting the center of this galaxy at an orbital speed of 7.5x10 5 m/s, out at a radius of 5.7x10

*asked by Zac on July 26, 2012* -
## Algebra

In 2000, in Country A, the average family net worth was $410,000, and there was about 6.1 x 10^7 families. Calculate the total family net worth Country A in 2000. Country A's total family net worth is what in dollars?

*asked by Jamal on April 12, 2013* -
## physics

when i calculate the density from my measurement,mass=154.4, volume=175.00,and got 0.8823 g/cmexp3 as the answer,so do i have to express the answer in scientific notation or round off it? No, you do not need to express the answer in scientific notation

*asked by Katrina on September 17, 2006* -
## stats

1. Suppose that you are taking a quiz of 6 multiple- choice questions (the instructor chose the questions randomly), each question having 6 possible responses. You did not study at all for the quiz and will randomly guess the correct response for each

*asked by Taylor on June 27, 2016* -
## PHYSICS

Two capacitors, C1=25.0x10^-6 and C2=5.0x10^-6 are connected in parallel and charged with a 100-V power supply. a)calculate the total energy stored in the 2 capacitors b) what potential difference would be required across the same 2 capacitors connected in

*asked by nat on February 4, 2008* -
## chemistry

Hi, I posted this question earlier but still need some help: 1.3188g of antacid is weighed and mixed with 75.00mL of excess 0.1746 M HCl. The excess acid required 27.20 mL of 0.09767 M NaOH for back titration. Calculate the neutralizing power of the

*asked by Serenity on October 5, 2010* -
## Algebra

Available evidence suggests that about 20 percent of the asteroid’s mass turned to dust and spread uniformly over Earth after eventually settling out of the upper atmosphere. This dust amounted to about 0.02 g/cm^2 of Earth’s surface. The asteroid very

*asked by Kate on August 16, 2010* -
## PHYSICS (CHECK WORK)

Can somebody please check my work. I got part a right, but my answer for part b is wrong. (a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 25.6 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is

*asked by Amy on November 7, 2012* -
## Physics

calculate the acceleration of this system, assuming that there are no frictional forces between the table and Block A. Block A is sitting on a table connected by a rope to a pulley system and Block B is hanging off the table connected to the rope from the

*asked by JR on November 19, 2013* -
## Math

Share $1500 among james, peter and mary so that each of the two boys receives twice as much as mary. Calculate the amount of money mary received. Express Mary's share as a fraction of the total amount. Express Peters share as a fraction of the amount

*asked by Jay on November 11, 2018* -
## Physics (please help!!!!)

A car experiences rolling (tractive) friction with coecient of friction mut = 0.0200, and turbulent-flow (bv^2) drag, with drag coefficient CD = 0.300. The car has mass (including fuel, which is a negligible fraction of the total) M = 1000. kg and frontal

*asked by Cecille on April 12, 2011* -
## Physics (please help!!!!)

A car experiences rolling (tractive) friction with coecient of friction mut = 0.0200, and turbulent-flow (bv^2) drag, with drag coefficient CD = 0.300. The car has mass (including fuel, which is a negligible fraction of the total) M = 1000. kg and frontal

*asked by Cecille on April 12, 2011* -
## western michigan university

A 30 gram metal at 100 degrees Celsius was dropped into 132 grams of water at 25 degrees Celsius and the final temperature for the metal in water system was 29 degrees Celsius. Calculate the specific heat capacity of the metal if the specific heat capacity

*asked by lorena on December 6, 2012* -
## Technology

Calculate the force required to move a small pistons that has an area of 2m2,if the force of a large piston is 20n with an as area of 4m2.Hint use a formulae :a frorce of small piston divided by an area of small piston equal to force of large pistone

*asked by Anonymous on June 2, 2017* -
## Physics

A diver (mass = 75.0 kg) walks to the end of a flexible diving board. The end of the board bends down a distance of 0.55 m. The diver's weight on the diving board makes it behave like a spring. a) Determine the spring constant of the diving board. b)

*asked by Shanelle on January 14, 2013* -
## Physics

It took a stopping train 41/4min to travel between two stations 11.2km apart.The train accelerated uniformly during the first 11/4min of the journey,and decelerated uniformly to rest during the last 3/2min of the journey.The train had moved with uniform

*asked by Dan on July 11, 2010* -
## chemistry

A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 52 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 24 s for 1.0 L of O2 gas to effuse.

*asked by Jennifer on October 10, 2010* -
## math

The top horizontal edge of the rectangle measures 17 centimeters, the left vertical edge of the rectangle measures 22 centimeters, and the bottom horizontal edge measures 17 centimeters. The left vertical leg is on the right edge of the rectangle, with v

*asked by chloe on May 9, 2019* -
## Chemistry

Good morning. I need help solving 2 problems for chemistry. For #1 I need someone to check my work and tell me if I did it wrong and show me how and where I went wrong. And for #2 I need someone to help me figure out how to solve it and explain. 1. With

*asked by Samantha on November 26, 2017* -
## Algebra 1

10)The formula b=30a is used in New England to estimate the minimum furnace output, b, in BTU's for a modern house with a square feet of flooring. A) determine the minimum furnace output for a 2100 ft squared modern house. B) solve formula for a Answer:a)

*asked by deedee on November 5, 2008* -
## Physics

PLEASE HELP WITH AS MANY AS POSSIBLE... I AM TERRIBLY CONFUSED. 1. A charge moves a distance of 1.7 cm in the direction of a uniform electric field having a magnitude of 200 N/C. The electrical potential energy of the charge decreases by 9.69095 × 10−19

*asked by Jonathan on February 16, 2010* -
## chemistry

1. If half cell A has a standard reduction potential of E= -1.10 V and half cell B has a standard reduction potential of E= 0.65 V, which half-cell is the anode? 2. Which half cell has the higher potential energy? 3. Calculate Ecell for this voltaic cell.

*asked by greentree on July 14, 2012* -
## physics

A U-shaped tube is partly filled with water and partly filled with a liquid that does not mix with water. Both sides of the tube are open to the atmosphere. If h1 = 0.46 m and h2 = 0.25 m, what is the density of the liquid? on the left side of the tube is

*asked by Adam on April 10, 2012* -
## Vector Cross & Dot Product

Given vector a=(2,1,0)and vector b=(-1,0,3) and vector c=(4,-1,1), calculate the following triple scalar and triple vector products. 1. c x a dot b What I did: c x a = ((-1)(0)-(1)(1), (1)(2)-(4)(0), (-1)(2)-(4)(1) =(-1, 2, -6) (cxa) dot b =(-1,2,-6) dot

*asked by Annon on February 9, 2015* -
## Business math

PROBLEM 1 The video discusses the requirements of a package to qualify as freight. A package must weigh at least 151 pounds. It must be palletized, stackable, forklift-friendly and shrink-wrapped or banded for stability. The uniform cargo footprint can be

*asked by maggie on April 11, 2013* -
## Physics

A rocket travels vertically away from the surface of Mars. It is still close to the surface and travelling at a speed of 25 m s when it jettisons an empty fuel tank. The fuel tank initially travels with the velocity of the rocket, but it is attracted to

*asked by Anon on May 14, 2018* -
## Chemistry help please!!!

Experimental Procedure, Part F. A 1.0- mL volume of 0.010 M H2SO3 is added to a mixture of 12 drops of 0.01 M HIO3, 8 drops of deionized water, and 1 drop of starch solution. A color change in the reaction mixture occured in 40 seconds. a. Assuming 25

*asked by john on January 27, 2011* -
## Physics/Mechanics

We will obtain bending moment diagrams for three beams and calculate stresses inside the beams. For each beam, take the x-axis along the neutral axis of the beam, oriented from left to right, with origin at A. HW7_1A_1 : 5.0 POINTS For the beam above,

*asked by MAN on June 18, 2013* -
## Materials Science

A 4-point bending test is performed on the same beam, with symmetric loads of 5kN separated by 2m. Draw the bending moment and shear force diagrams for the beam. Then answer the following questions about the shear force V and bending moment M. What is the

*asked by qwerty on October 17, 2014* -
## chemistry

A method for scrubbing CO2(g) from the air on a spacecraft is to allow CO2(g) to react with NaOH according to the following (unbalanced reaction). NaOH(s) + CO2(g) → Na2CO3(s) + H2O(l) Use the appropriate thermodynamic tables to calculate the enthalpy,

*asked by Boris on February 3, 2015* -
## college general chemistry

calculate the lowest whole number ratio of Moles of Mg/moles of O average of Moles of Mg/Moles of O Trial 1 mass of empty crucible and lid= 36.560 mass of Mg=0.348 mass of crucible, lid, and product=38.229 Trail 2 mass of empty crucible and lid=32.221 mass

*asked by Amber on February 25, 2013* -
## statistics

A life insurance salesman sells on the average 3 life insurance policies per week. What type of this distribution is? (2 marks) Let in a given week, calculate probability of the salesman will sell, i. at least one policy. (2 marks) ii. from two to four

*asked by sara on December 6, 2011* -
## Pseudocode

Write an algorithm and pseudocode for A salesperson wants to write a program to calculate their gross monthly pay based on their annual salary, total sales, and commission rate. The program's output is the monthly pay calculated by: Monthly pay = (annual

*asked by Mare on October 28, 2018* -
## accounting

Wallace Inc., a developer of radiology equipment, has stock outstanding as follows: 30,000 shares of cumulative preferred 2% stock, $90 par and 125,000 shares of $10 par common. During its first four years of operations, the following amounts were

*asked by Anonymous on September 15, 2014* -
## Statistics

10. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and

*asked by Tab on January 26, 2011* -
## Math

The Pioneer 10 spacecraft passed the planet Jupiter on December 12, 1973, and exited the solar system on June 14, 1983. The craft traveled from Mars to Jupiter, a distance of approximately 1 billion kilometers, in one year and nine months. a.Calculate the

*asked by Aubrey on November 17, 2013* -
## physics multiple choice

1)A coil of length 1cm has N turns and carries an electric current I. It creates at a point M a magnetic field of intensity B. -If a current 3I is sent in the coil the field strength at M becomes: a. 3B b. B/3 c. B -If the number of turns per unit length

*asked by angy on May 17, 2016* -
## chem

I am posed with a question which, in order to be solved, needs the Van't Hoff Factor of ethylene glycol. Some research has shown me that ethylene glycol is an electrolyte, but I don't know how it dissociates in water. Any help would be appreciated. It is

*asked by Jakob on March 24, 2007*

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