Answer:
A
Explanation:
I think it a because it seems more like the right answer
What elements are represented by the chemical NaHCO2 formula?
A. nitrogen, helium, carbon, oxygen
B. nitrogen, helium, cobalt
C. sodium, hydrogen, cobalt
D. sodium, hydrogen, carbon, oxygen
Answer: D.
Explanation: Na= Sodium, H= Hydrogen, C= Carbon, O= Oxygen
Which sources of error could cause you to draw an incorrect conclusion to an experiment? Select all that apply.
1: testing too many times
2: not testing enough times
3: testing more than one variable
4: human error
Answer: Human error, not testing enough times.
- if it's not these 2 then it's Human Error, Not testing enough times, and testing more than one variable.
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