30% should be the percentage of oxygen if the total mass of fe2o3 is 160.
Answer:
A-10
Explanation:
In the SI, designations of multiples and subdivision of any unit may be arrived at by combining with the name of the unit the prefixes deka, hecto, and kilo meaning, respectively, 10, 100, and 1000, and deci, centi, and milli, meaning, respectively, one-tenth, one-hundredth, and one-thousandth.
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Answer: The reactivity of acetic acid with various chemicals (A)
Explanation: engenuity 2021