Lab test

Question 1

what is the formula to calculate density?

Answer 1

Density = mass/volume

Question 2

What is the producer to find the density of wiper fluids?

Answer 2

1. Turn on digital scale and zero it
2. Place an 100ml graduated cylinder on the scale
3. Zero the scale
4. Pour 100ml of the fluid into the 100ml graduated cylinder and record the mass
5. Record the volume
6. Calculate the density mass(g)/volume(ml)
7. rinse out graduated cylinder and materials used

Question 3

What is the procedure to find the density of irregular shaped objects?

Answer 3

1. Turn and digital scale and zero it
2. Place the object on the scale
3. record the mass (g)
4. Fill and 100ml graduated cylinder with 50ml of water and record that as your Vi (initial volume)
5. Place the object into the graduated cylinder
6. Record the new volume as Vf (final volume)
7. Calculate the density mass(g)/volume(ml)

Question 4

How do you find the volume with the Vi and the Vf

Answer 4

V= Vf-Vi

Question 5

How do you measure the pH with Universal Indicator Paper (procedure)

Answer 5

1. Use an eyedropper to transfer a small sample of the test liquid into the chem plate
2. Dip a strip on indicator paper into the substance and match it