Learning Task 3 Directions: Below are description of tools that need maintenance. Give the immediate maintenance procedure that should be done. Write your answers on a separate sheet of paper. Preventive Maintenance Task of Tools and Equipment Description
1. a rake with wet wooden handle
2. a filler covered with sticky plant sap
3. clogged air filter of a chain saw
4. uncoiled garden hose
5. a wheelbarrow that won't roll

ANSWER:
1.
2.
3.
4.
5.

How is 0.00235 expressed in proper scientific notation? a. 2.35 × 10-3 b. 0.235 × 10-2 c. 2.35 d. 2.35 × 103

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.