Answer:
It is "The opening of flask is pointed in an unsafe direction"
Explanation:
The students were there in the lab to perform practical without obeying the safety rules. The most reasonable basis for teacher's warning here, in this case, is the flask which is pointed in an unsafe direction. It is not specified whether the flask is containing any chemical or not but even if it is empty, it might just fall and break and create injury to anyone present in the lab because, the students are also not wearing proper laboratory wear in accordance to the safety rules which include lab coats, gloves, eyewear, etc. Also, some Students have not tied their hair and more importantly the flasks carrying liquids are not labeled. All of these things might end up in a critical situation for which the teacher warned students about it all.
Answer:
Yes
Explanation:
You can identify an unknown substance by measuring its density and comparing your result to a list of known densities.
Density = mass/volume
When you divide the mass by the volume and compare the density to a list of known densities.
Answer:
El Proyecto Genoma Humano (PGH) fue un proyecto internacional de investigación científica con el objetivo fundamental de determinar la secuencia de pares de bases químicas que componen el ADN e identificar y cartografiar todos los genes de un genoma humano promedio desde un punto de vista físico y funcional, incluyendo
Explanation:
Answer:
B. Offering advice about how best to perform a standard procedure.
Explanation:
Helping others can be in different ways, be it helping out or by giving encouraging words or advice. But in all aspects of help, there is always a positive outcome if help is given in the right way and at the right time. And it is also how one person lifts another.
A scientist can help a colleague out by offering advice and telling the person how to best perform a standard procedure. This will help the colleague do better in the experiment and also help ensure that the right things are done and the efforts are successful. The other options are all negative in their 'approach' which will only hinder the colleague in his/her works.
Thus, the correct answer is option B.
Answer:
d
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Explanation:
