Question
Follow the instructions below when using any kind balance: Use the brush text to each balance to clean the pan (and enclosure) before and each car. sure that the balance gives a when the pan is empty. This can be done by using the "Tare" or "Zero" on the balance. Balances can be damaged by mixture. Do not pour liquids on the Pan: clean up spills. No chemical reagents should be weighted directly on the balance pan. Use a weighing, weighing paper or glass vessel. Materials should be placed gently on the balance pan to avoid damage to the balance. For accurate mass determinations, the object to be weighed must be at room temperature. If a warm object is placed on the balance pan, the air around it becomes The warm air and the motion of the air be directed by the balance, giving that are significantly difference than the true value. Procedures in a lab carrier may be written in such terms as "weigh 0.5 grams of substance to the nearest milligram." Thus does not mean that exactly 0.500 g of substance is needed. Rather, the statement means that an amount between 0.450 and 0.549 g should be obtained. Unless a procedures states explicitly than an exact amount is to be weighted, you should not wave trying to obtain an exact amount. But always record the mass actually measured to the precision of the balance used.
Explanation / Answer
1 ALWAYS USE VERY CAREFULLY 2 USE BRUSH TO CLEAN THE PAN 3 ALWAYS RESET AT ZERO BEFORE WEIGHING 4 KEEP DATA AT YOUR NOTE BOOK 5 FOR EXACT WEIGHT WE HAVE TO USE THREE TIME MESURING FIRSTLY WE TAKE WEIGHT OF EMPTY WEIGHING TUBE THEN WITH MATERIAL AND AGAIN AFTER TRANSFERING THE MATERIAL