Mary Buchanan
2021-12-19
Answered

A 20.0-mL sample of 0.150 M KOH is titrated with 0.125 M $HCl{O}_{4}$ solution. Calculate the pH after the following volumes of acid have been added: 30.0 mL.

You can still ask an expert for help

asked 2020-11-22

The specific heat of lead is 0.030 cal/g.C. 300 grams of leadshot at 100C is mixed with 100 grams of water at 70C in an insulated container. The final temperature of the mixture is:

A) 100C

b) 85.5C

c)79.5C

d) 74.5C

e)72.5C

A) 100C

b) 85.5C

c)79.5C

d) 74.5C

e)72.5C

asked 2021-02-18

In an industrial cooling process, water is circulated through a system. If the water is pumped with a speed of 0.45 m/s under a pressure of 400 torr from the first floor through a 6.0-cm diameter pipe, what will be the pressure on the next floor 4.0 m above in a pipe with a diameter of 2.0 cm?

asked 2021-02-21

A 0.75-kg ball is attached to a 1.0-m rope and whirled in avertical circle. The rope will break when the tension exceeds 450 N. What is the maximum speed theball can have at the bottom of the circle without breaking the rope?

A) 38 m/s

B) 16 m/s

C) 12 m/s

D) 24 m/s

E) 32 m/s

A) 38 m/s

B) 16 m/s

C) 12 m/s

D) 24 m/s

E) 32 m/s

asked 2021-04-15

A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure below. The length of the arc ABC is 235 m, and the car completes the turn in 33.0 s. (Enter only the answers in the input boxes separately given.)

(a) What is the acceleration when the car is at B located at an angle of 35.0°? Express your answer in terms of the unit vectors

1. (Enter in box 1)

(b) Determine the car's average speed.

3. ( Enter in box 3) m/s

(c) Determine its average acceleration during the 33.0-s interval.

4. ( Enter in box 4)

5. ( Enter in box 5)

asked 2021-01-06

asked 2021-11-21

Find

asked 2021-12-12

An object is placed 30 cm to the left of a converging lens that has a focal length of 15 cm.
Describe what the resulting image will look like (i.e, image distance, magnification, upright
or inverted images, real or virtual images)?