Tonight I’m Doing homework :(
Answer:
For rusting, it is difficult to write an equation due to the complexity of the reaction. Thus, we can express the reaction like the following. According to the law of conservation of mass, the increased mass of nail and rust is the amount of oxygen.
Explanation:
I hope this helps:)
Well I assume it’s 20/4 which is 5
Qualitative.
Even though numbers are involved, they are not the result of measurement
Answer: Assume that the substance is hazardous. Always wear appropriate PPE and take steps to prevent contact.
Explanation:
When working with chemicals, a sound safety policy involving the use of chemicals should be established and maintained. This will help in safeguarding lives, properties and the environment.
The best safety approach when working with unknown chemical substances is to assume that the substance is hazardous and always wear appropriate PPE and take steps to prevent contact.
Since the substance is unknown, the best thing the person can do is to assume that it's harmful and hazardous and therefore take necessary precautions. The individual can put on laboratory coats, protective glasses, gloves etc. This is vital in order to prevent accidents from happening.