Answer:
Lavoisier disproved the phlogiston theory. He demonstrated that there was an element called oxygen that played a major role in combustion. He also showed that the mass of products in a reaction are equal to the mass of the reactants. The phlogiston theory did not account for the weight changes found in fire. Lavoisier hypothesized that it was probably the fixation and release of air, rather than fire, that caused the observed gains and losses in weight.
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Answer:
The volume will be 2600 L.
Explanation:
Initial temperature (
) = 25°C = (25 + 273) K = 298K
Final temperature (
) = 54°C = (54 + 273) K = 327 K
By using the combined gas law equation,
= 
or, 
= 
or, 3060 × 327 = 380 × 
or, ≈ 2600 L
Hence the volume of the balloon will be about 2600 L.
Answer:
43.0966
Explanation:
Utica GPS Location, New York, U.s. Elevation: 43.09666.
The elevation of Polaris, as though from a New York spot, was estimated at 43,09666 °
Answer:
2-
Step-by-step explanation:
An O atom is neutral because it has the same number of protons as electrons.
O is in Group 16, so it <em>adds two electrons</em> to get a complete octet.
Since it has two extra electrons, the charge on an oxygen ion is 2-.
