Answer:
Explanation:
1. Calculate the mass of each element
2. Calculate the moles of each element
3. Calculate the molar ratios
Divide all moles by the smallest number of moles.
4. Round the ratios to the nearest integer
C:H = 1:2
5. Write the empirical formula
The empirical formula is
Atomic mass is the sum of the masses of the protons, neutrons, and electrons in an atom
Answer:
Sublimation.
Explanation:
Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage
I would say the answer is P2O5. Some teachers use PO2.5. I'm not one of them.
B. It is open to change as new evidence or data is discovered. If scientists discover new evidence, they must modify their theories to conform with the new data.
A. is <em>incorrect</em>. Scientific laws are so well established that there can be no exceptions.
C. is <em>incorrect</em>. A scientific theory is the collective judgement of scientists as to the best explanation for a phenomenon. A new observation may require modification of the theory.
D. is <em>incorrect</em>. Advancements in technology can provide new evidence that requires new explanations.
