mathew

Jennifer is a 29-year-old administrative assistant married to Antonio, an Italian engineer, whom Jennifer met four years earlier while on a business trip for her marketing company. The couple now lives in Nebraska, where Antonio works for the county's tra...

17 years ago

unscamble the letter to find the name of a mall trrlnematitanaaon

15 years ago

sin^-1(sin 7pi/6)

15 years ago

x^4-1/x^3=0

15 years ago

oxidation state of nitrogen in n2h4

15 years ago

use exponential notation to express the number 480 in 3 significant figures and 4 significant figures

15 years ago

the most common english unit of mass is the pound avoirdupois. what is one troy pound in kilograms and in pounds?

15 years ago

in right triangle PQR,Q=90DEGREE,PQ=4 AND PR=7 WHAT IS ANGLE R TO THE NEARST TENTH OF A DEGREE

14 years ago

So I have to write an argumentative essay on Canadians peacekeeping in foreign countries (Cyprus, Rwanda, Somalia, Bosnia, Croatia) and I have to argue whether Canadians should or shouldn't be peacekeeping in foreign countries. I have to have 3 main argum...

14 years ago

can you write an equation for the line with slope 2/3 and y-intercept 5?

14 years ago

Julia and Bianca both leave the college at the same time, but in opposite directions. If Bianca travels 9 mph faster than Julia and after 4 hours they are 140 miles apart, how fast is each traveling?

12 years ago

what volume of0.100 M NaPO4 is required to precipitate all the lead(II) ions from 150ml of 0.254 M Pb(NO3)2

11 years ago

what volume 0,100M of Na2PO4 is required to precipatate all the lead(II) ions from 150 ml of 0.250M Pb(NO3)2

11 years ago

what mass of barium sulfate can be produced when 100 ml 0.100 M of solution of barium chloride is mixed with 100.0 ml of a 0.100 M solution of Iron (III) sulfate

11 years ago

what mass of silver chloride can be prepared by the reaction of 100 ml 0,20 M of silver nitrate with 100,0 ml of 0.15 M calcium chloride calculate the concentration of each ion reamaining in solution after the precipitation is complete

11 years ago

a student mixes 4 reagents together thinking that the solution will neutralize each other . The solution is mixed together are 50 ml of 0.100 M of HCL and 100 ml of 0,200 M of nitric acid 500 ml of 0.0100 M ca hydroxide and 200 ml of 0.100 M rubidium hydr...

11 years ago

30 ml of sample of unknown strong base is neutralized after the addition of 12 ml of a 0.150 M HNO3 solution if the unknown base concentration 0.0300 M give the possible identities for the unknown base

11 years ago

Balance following oxidation reduction reactions using oxidation states method? a) Cl2(g) + Al(s) --> Al3+(aq) + Cl- b.) O2(g) + H2O(l) + Pb(s) --> Pb(OH)2(s) c) H+(aq) + MnO4-(aq) + Fe2+(aq) --> Mn2+(aq) + Fe3+(aq) + H2O(l)

11 years ago

Two ice skaters stand facing each other at rest on a frozen pond. They push off against one another and the 48-kg skater acquires a speed of 0.65 m/s. If the other skater acquires a speed of 0.84 m/s, what is her mass?

11 years ago

10 ml sample of vinegar an aqueous solution 0f acetic acid( HC2H3O2) is titrated with 0.5062 M and 16.58 ml is required to reach equivalence point what is the molarity of the acetic acid b. if the density of vinegar is 1.006 g/cm3 what is the mass percent...

11 years ago

One hazard of space travel is debris left by previous missions. There are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. Calculate the force exert...

11 years ago

A student mixes 4 reagents together thinking that the solution will neutralize each other . The solutions are mixed together are 50 ml of 0.100 M .hydrochloric acid 100 ml of 0.200 M of nitric acid 500 ml of 0.0100 M calcium hydroxide and 200 ml of 0.100...

11 years ago

Drow a velocity time graph graph for the ball starting 1.0 s before the collision to 1.0s after the collision

11 years ago

Following oxidation-reduction reaction by using the oxidation state method a) O2+H2O+Pb=Pb(OH)2

11 years ago

The x component of a displacement vector r is −149 m, while its y component is −174 m. (a) Find the magnitude of r. (b) Find the direction of r.

11 years ago

An analytical procedure requires a solution of chloride ions ,How many grams of CaCl2 must be disolved to make2.15L of 0.0520 M C

11 years ago

A student weighs out 0.568 g of KHP (molar mass = 204 g/mol) and titrates to the equivalence point with 36.78 mL of a stock NaOH solution. What is the concentration of the stock NaOH solution? KHP is an acid with one acidic proton. a. 3.15 M b. 0.0757 M c...

11 years ago

An unknown diprotic acid requires 26.66 mL of 0.117 M NaOH to completely neutralize a 0.845 g sample. what is the molar mass of the acid?

11 years ago

A beaker contain 300.ml of a 0,20 M Pb(NO3) solution. If 200 ml of 0,20M solution og MgCl2 is added to the beaker, What will be the concentration of Pb2+ ions in the resulting solution

11 years ago

1) Aqueous solutions of potassium sulfate and ammonium nitrate are mixed together. Which statement is correct? A) Both KNO3 and NH4SO4 precipitate from solution B) A gas is released C) NH4SO4 will precipitate from solution D) KNO3 will precipitate from so...

11 years ago

A bicycle tire fitted was fitted with the air pressure of 75 psi at temperature 19 degree C riding the bike on a asphalt on a hot day increases temperature of the tire to 58 degree C. The volume increase by 4% . What is the new pressure

10 years ago

A compressed gas cylinder contains 1.00 into 1000 g argon gas . the pressure inside the cylinder is 2050 psi at a temp of 18 degree . how much gas remains in the cylinder if the pressure is decreased to 650 psi at a temperature of 26 degree of 26 degree c

10 years ago

A 100 L flask contains a mixture of methane and argon gasses at 25 degree C . The mass of argon present is 228 g and the mole fraction of methane in the mixture is 0.650 . calculate the total kinetic energy of gaseous mixture

10 years ago

while cruising along dark stretch of highway at a speed of 25 m/s you see that bridge ahead has been washed out. you apply the breaks to and come to a stop in 4.0 sec construct the position vs time graph and acceleration vs time graph and motion graph for...

10 years ago

A jet needs to reach a takeoff speed of 75.0 m/s. If the runway is 1625 meters long, what minimum acceleration is needed? How much time will it take to reach the takeoff speed

10 years ago

The reaction SO2 + H2O =H2SO4 Is the last step in the commercial production of sulfuric acid . the enthalpy change for this reaction is -227 KJ . In designing a sulfuric acid plant is it necessary to provide for heating or cooling of the reaction mixture...

10 years ago

A 18.3 g piece of aluminum (which has a molar heat capacity of 24.03 J/oC mol) is heated to 82.4oC and dropped into a calorimeter containing water (specific heat capacity of water is 4.18 J/goC) initially at 22.3oC. The final temperature of the water is 2...

10 years ago

Sodium vapor lamps are used in Chicago to light city streets. The light emitted (given off) by these lamps has a λ of 5.9 x 10-7 m. What is the λ in cm? What is the λ in nanometers (nm) [1 meter = 1 x 109 nm]? What is the ν of this radiation? In what regi...

10 years ago

A contestant in a winter games event pushes a 41.0 kg block of ice in the positive direction across a frozen lake as shown in the Figure (a). The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03.

10 years ago

A mover has to move a heavy sofa of mass 66 kg to the second floor of the house. As he pulls on the rope tied to the sofa he makes sure that the rope is parallel to the surface of the ramp, which is at 30.0° to the horizontal. If the coefficient of kineti...

10 years ago

A skydiver weighing 840 N opens his parachute at the appropriate height from the ground. The air exerts a significant upward drag force, which is initially greater than the weight of the diver. This helps to slow the skydiver down. What is the diver's acc...

10 years ago

Calculate the acceleration of a sled that is heading down a 50° slope (one that makes an angle of 50° with the horizontal). The coefficient of kinetic friction on ice is μk = 0.100. (Take the x direction to be parallel to and down the slope and the y dire...

10 years ago

A quarterback threw a football at 27 m/s at a certain angle above the horizontal. If it took the ball 3.3 s to reach the top of its path, how long was it in the air? s

10 years ago

A football is kicked from the ground with a speed of 23m/s at an angle of 42 degrees above the horizontal a) how long is the football in the air b) how far does it travel

10 years ago

Can the gravitational potential energy of a baseball ever be negative? Yes No Explain without using a formula.

10 years ago

How much work must be done to stop a 1070 kg car traveling at 111 km/h?

10 years ago

A 66-kg baseball player slides into third base. He starts his slide at a speed of 4.3 m/s and his speed is zero just as he reaches the base. If the coefficient of friction between his clothes and the surface of the baseball infield is 0.60, determine the...

10 years ago

At 500 K in the presence of a copper surface, ethanol decomposesaccording to the following equation. C2H5OH(g) CH3CHO(g) + H2(g) The pressure of C2H5OH was measured as afunction of time and the following data were obtained. Time (s) PC2H5OH(torr) 0 250. 1...

10 years ago

Guy has to get a piano onto a 2.4 m high platform. He can use a 3.0 m long frictionless ramp or a 4.0 m long frictionless ramp. Which ramp will Guy use if he wants to do the least amount of work? Either ramp as the work done is same in both cases. The sho...

10 years ago

a) calculate the concentration of your unknown (Gatorade) using correct units Note if you did not run the Gatorade use absorbance =0.205 abs units in order to calculate the concentration of the dye in the Gatorade b) calculate of % T for an absorbance of...

10 years ago

Which of the following statements about electric field lines due to static charges are true? (Select all that apply.) Electric field lines can never cross each other. Static charges can create closed loop electric field lines that do not begin or end on a...

10 years ago

(a) A charged particle accelerates as it moves from location A to location B. If V A = 170 V and V B = 210 V, what is the sign of the charged particle? positive negative (b) A proton gains electric potential energy as it moves from point 1 to point 2. Whi...

10 years ago

How many fewer minutes would it take the driver to travel a distance of 10 miles at a speed of 65 miles per hour than at a speed of 50 miles per hour? Round your answer to the nearest minute.

9 years ago

write each fraction as a decimal and each decimal as a fraction in simplest form. 1.8/20 2.0.64 3.3/100

9 years ago

if one of the zeroes of a cubic polynomial x^3+ax^2+bx+c is -1.find the product of other 2 zeroes

8 years ago

4/100 of which is 0.8

8 years ago

0.7 of which is 3.43

8 years ago

If you eat 2/3 of a pizza, and are left with 12 slices, how many slices are in 1/2 of the pizza?

8 years ago

Mrs. Herby bought some carrots. She put 2/5 of them on a platter and the rest in a plastic bag. If there were 8 carrots on the platter, how many carrots were there in the plastic bag?

8 years ago

a pharmisist put 4.536 ounces of vitamines pills into bottles 0.042 ounce of vitamin pills into each bottle. how many bottels did the pharmesist use for each vitamin bottle

3 years ago

i am a perscoll and the aswer for 25X25=625

15 years ago

50X1=50

15 years ago

Thanks for the answer, but a few questions. Why exactly do developed democracies have said responsibility, and how does preventing wars protect Canada?

14 years ago

If anything, I feel that peacekeeping would only agitate other countries of Canada's presence, no?

14 years ago

So basically what you're saying is if a war breaks out in the country Canada is peacekeeping in, they'll feel obliged to participate?

14 years ago

the concentration of a certain sodium hydroxide solution was determined by using using the solution to titrate a sample of KHP is an acid with one acidic hydrogen and a molar mass of 204.22 g/mol. in the titration 34.67ml of the sodium hydroxide solution...

11 years ago

Thank you I appreciate it

11 years ago

Drow a velocity time graph graph for the ball starting 1.0 s before the collision to wall and 1.0s after the collision

11 years ago

Thank you

11 years ago

you have exposed electrodes of light bulb in a solution of H2SO4 such that the light bulb is on you add dilute solution and bulb goes dim which of the following could be the solution Ba(OH)2 NaNO3 K2SO4 Cu(NO3)2 none of the above

11 years ago

Thank you very much

11 years ago

paul konerko hits a baseball in such a way that it leaves his bat traveling at 43.4m/s at an angle os 28 degrees above the horizontal when hit the baseball is 1.2 m above the ground 127 meter away is a 3.5 m tall fence iis this is home run

10 years ago

Thank you so very much

10 years ago

wining lotto number machine lotto number 56 4, 45 45 54 85 33 37 71 50 1, 85 9, 16 53 78 35 42 77 7, 84 61 59 89 48 81 56 65 90 14

9 years ago

wining lotto number machine lotto number 56 4, 45 45 54 85 33 37 71 50 1, 85 9, 16 53 78 35 42 77 7, 84 61 59 89 48 81 56 65 90 14

9 years ago

alpha+beta=-b/a =--4/2 =2 alpha^2+beta^2=(alpha+beta)^2 =2^2 =4 (ii)take reciprocal(1/2)^2=1/4 (iv)a^-1=1/a similarly 1/2 tried my best to answer hope its correct:) your pal mathew

8 years ago

I don't understand

7 years ago

what about the titanic

5 years ago

I pls need full solving

3 years ago

calculate (126)base n = 86 base ten

3 years ago

Enter an equation that represents the data in the table. 3 5 8 10 12 20 32 40 An equation is =

3 years ago