blair

does the addition of a strong acid increase the percent ionization of a weak acid HB?

17 years ago

A student throws a set of keys vertically upward to her sorority sister, who is in a window 4.30 m above. The keys are caught 1.30 s later by the sister's outstretched hand. (a) With what initial velocity were the keys thrown? _____________ m/s upward (b)...

16 years ago

Liz rushes down onto a subway platform to find her train already departing. She stops and watches the cars go by. Each car is 8.60 m long. The first moves past her in 2.05 s and the second in 1.73 s. Find the constant acceleration of the train. _____m/(s^...

16 years ago

A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.8 m/s at ground level. Its engines then fire and it accelerates upward at 3.90 m/s2 until it reaches an altitude of 920 m. At that point its engines fail, and...

16 years ago

Vroom-vroom! As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 8.40 mi/h·s. In the adjoining bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant acceleration of 11.5 mi/h·s. Ea...

16 years ago

The reason you might see fewer colonies on your LB/Amp/Arabinose + plate (compared to the number of colonies..? The reason you might see fewer colonies on your LB/Amp/Arabinose + plate (compared to the number of colonies that you see on your LB/Amp + plat...

16 years ago

In an Atwood machine m1 = 2.00 kg and m2 = 6.50 kg. The masses of the pulley and string are negligible by comparison. The pulley turns without friction and the string does not stretch. The lighter object is released with a sharp push that sets it into mot...

15 years ago

Which is the most common complex carbohydrate on earth? A. Starch B. Glycogen C. Cellulose D. Hemicellulose E. Chitin

15 years ago

A 1.30 kg toaster is not plugged in. The coefficient of static friction between the toaster and a horizontal countertop is 0.400. To make the toaster start moving you carelessly pull on its electric cord. (a) For the cord tension to be as small as possibl...

15 years ago

A 2.00 kg aluminum block and a 5.20 kg copper block are connected by a light string over a frictionless pulley. They sit on a steel surface, where θ = 28.0°. Determine the sum of the magnitudes of the forces of friction acting on the blocks._____________...

15 years ago

please help.diagram the adjective modifier in this sentence. The red tuplis and yellow daffodils are pretty. thanks

15 years ago

thank you Ms. Sue, my new sentence is Leanna, vacuumed the living room and dusted the knicknaks on the piano. Please diagram the adjective modifiers. Thank you.

15 years ago

evaluate the expression (-7)-8

15 years ago

A beam of microwaves with = 0.7 mm is incident upon a 12 cm slit. At a distance of 2 m from the slit, what is the approximate width of the slit's image?

14 years ago

72.33 mL of 0.137 M HCl was added to an Erlenmeyer flask and is titrated with 0.165 M NaOH. Calculate the pH when 5mL of NaOH is added after the equivalence point has been reached.

13 years ago

A 3.555 g sample of a monoprotic acid was dissolved in water. It took 23.32 mL of a 0.875 M NaOH to neutralize the acid. Calculate the molar mass of the acid.

13 years ago

Calculate the pH when 75.20 mL of 0.114 M HCl is titrated with 0 ml of 0.108 M NaOH

13 years ago

Calculate the pH when 75.20 mL of 0.114 M HCl is titrated with 0 ml of 0.108 M NaOH

13 years ago

1st car =8.6/2.05 m/s =4.195m/s 2nd car = 8.6/1.73 m/s =4.971 m/s 4.971-4.195= 0.776m/s a= delta V /delta T (0.776m/s ) /0.32s= 2.44 m/(s^2) That answer isn't correct. This is what I did initially and I'm stumped on this question. Please let me know if th...

16 years ago

sorry Ms. Sue, i couldn't find my glasses. living room and knicknacks, i'm not sure about this one. vacuumed /verb dusted / verb piano . noun?

15 years ago

how do you determine the L NaOH?

13 years ago

it doesn't say. That's all that is asked.

13 years ago

mols HCl= molsNaOH?

13 years ago

thanks for the help

10 years ago