When wood burns the mass of the soot ashes and gases equals the original mass of the charcoal and the oxygen when it first reacted
Answer:
Secondary
Explanation:
There are several levels of prevention. You might confuse this with primary prevention. Primary prevention is preventing infection, so it has to be done before the patient caught the disease.
The needle-exchange program aims to reduce the spread of blood-borne disease(HIV, hepatitis, etc) from the multiple usages of the same needle. Since the disease already exists, this will be secondary prevention.
If this is true or false than it is FALSE
Yes, that's true.
The reason is that water is a polar solvent and the organif fact is not polar.
In chemistry there is a rule that similar dissolves similar. This is polar dissolves polar and non polar dissolves non polar.
