B) Two students performed the experiment to verify the Law of Conservation of mass in a chemical reaction. Following are their observation. Which student has performed the experiment correctly and why?
N
Initial mass of reaction mixture in Final mass of reaction
Mass of beaker
beaker
mixture in beaker
Student A
23.5 gms
223.5 gms
223.5 gms
Student B
23.5 gms
225.5 gms
227 gms
SECTION - B

The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. it involves making observations, formulating a hypothesis, and conducting scientific experiments.the steps of the scientific method are •observation-the first step of the scientific method involves making an observation about something that interests you•question-once you've made your observation, you must formulate a question about what you have observed. •hypothesis-once you've made your observation, you must formulate a question about what you have observed. •experiment-once you've developed a hypothesis, you must design and conduct an experiment that will test it.•results-the results are where you report what happened in the experiment. •conclusion-the final step of the scientific method is developing a conclusion.i hope that this you : )

Centriole.centrioles are present in animal cells but are usually absent in plant cells.