The correct method of removing a glass is to grasp it between the second and third finger. Inserting and removing glass tubing from rubber stoppers can be dangerous; therefore its is important to always protect ones hand using towels, or cotton gloves. If a piece of glassware is stuck in a stopper then one should ask for assistance from their teacher.
The correct method of removing
a glass stopper is to grasp it between the second and third finger with the
help of the thumb. If the glass stopper is stuck, you can use the tap method by
using many gentle tap and keep on turning the flask. Another technique is to put
oil or use a flame to expose it to heat.
Salinity is the concentration of dissolved salts in water. Density is the degree of compactness in a substance. By determining the salinity of a substance, you would also be determining the density.
Can plasma from recovered C OVID-19 patients treat the sick?
Since March 28, at least 11 patients critically ill with C OVID-19 at hospitals in New York City and Houston became the first in the United States to receive a promising experimental treatment
