Fsperimental You will be provided with a solution of 2,0 moldm" Cuso4
using your pipette and volumetric flasks, dilute the solution to give
solution 1.0,0.5,0.02 and 0.01 moldm-3 strength. Pipette 10 cm3 of each dilution into test-tube and show this to your laboratory instructor.
* Preparation of Standard Solutions:
You will be provided with small quantity of sodium chloride or any
other sali with known molecular mass. You are required to calculate and
prepare 250 cm' of 0.01 moldm'of this salt using your volumetric flask.
Show all the calculations and record all weighing in your data book.
DO
Exercise:
100)
(a) How would you prepare 500 cm' solution of 0.05 moldm' of
potassium hydrogen phthalate? (KHC8H404) (K = 39; H = 1; C =
anisoitto
12,0 16.0)​

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.