Answer:
The first seven metals in the periodic table are lithium, beryllium, sodium, magnesium, aluminium, potassium and calcium, known collectively as the “lightest metals”
Explanation:
<h2><u>CHECK THE OPTIONS AND ANSWER ANY ONE IF SINGE CHOICE..</u></h2>
The final temperature of the water will be 31.2 °C... i don’t know the second one sorry :(
Because Nitrogen is required to biosynthesize basic building blocks of plants, animals and other life forms.
As bracelet is dangling it means there is possibility that the dangled part of bracelet may touch or collide with any lab stuff during performing an experiment
As mentioned in the options the student should remove the dangling bracelet during heating of test tube of acid solution in hot water bath to minimize the chance the bracelet pulling over a test tube, causing a spill.
The acid spill may cause burning , skin irritation, rashes etc
The answer of the question is 9075