Answer:
See explanation
Explanation:
The melting point range of a pure compound is about 1-2ºC of the expected melting point. An impure solid melts within a range that is both larger than that of the pure substance (>1ºC) and begin at a lower temperature because impurities decrease the meting point. A melting range of 5º or more indicates that a compound is impure.
Since the melting points of A and B are estimated at 133 o C, the melting point range for each pure substance must be slightly different from each other. The melting point of the unknown is measured and its range is compared with the melting point ranges of pure A and B then decision can now be made about the identity of the unknown solid.
Answer: CH2O
Explanation:
this formula is glucose, as you said the molecular formula is C6H12O6 because an actual molecule of glucose contains that many atoms of each element
an empirical formula is the simplest whole-number ratio of a formula (ex: 1-2-1)
B KOH
I would say this is the base for the compound substance
Answer:
C: The Fe is not balanced
Explanation:
The reaction expression is given as:
Fe₂O₃ + 3H₂ → Fe + 3H₂O
The problem here is to find the specie that is not balanced.
Number of moles
Specie Reactant Product
Fe 2 1
O 3 3
H 6 6
So, we see that Fe is not balanced.
Answer:
True
Explanation:
Ex. People against vaccines tend to believe crazy theories over facts because they think they'll end up brainwashing them.
