Answer:
42.29 g of BrF₃.
Explanation:
Molar mass of OF2 = 16 + (2 * 19)
= 54 g/mol
Number of moles of OF₂ = mass / molar mass
= 25/54
= 0.46 mol.
Number of OF₂ molecules = number of moles * avogadros constant
= 0.46 * 6.022 x 10²³
= 2.8 x 10^23 molecules of OF2.
Since each OF₂ molecule has 2 Fluorine atoms,
Number of Fluorine atoms in 25.0 g of OF₂ = 2 x 2.8 x 10²³
= 5.576 x 10²³ atoms of Fluorine.
Since 1 BrF₃ molecule has 3 Fluorine atoms,
number of BrF₃ molecules = Number of Fluorine atoms / 3
= 5.576 x 10²³ / 3
= 1.8587 x 10²³ molecules of BrF₃.
Number of moles of BrF₃ = number of molecules of BrF₃ / Avogadros constant
= (1.8587 x 10²³) / (6.022 x 10²³ )
= 0.30865 moles of BrF₃.
Molar mass of BrF₃ = 80 + (19 * 3)
= 137 g/mol
mass of BrF₃ = number of moles * molar mass
= 0.30865 * 137
= 42.29 g of BrF₃.
Answer:
4:16
Quick Facts
Species
Native
Size
5 to 6 inches in length
Habitat
Muddy marshes, tidal creeks and grass flats and along sheltered shores. In summer, may range along a hundred feet of the shoreline and a few yards offshore. During colder months, often retreat to deeper waters or burrow six to eight inches deep in bottom mud or silt.
Range
Abundant, permanent residents of the entire Chesapeake Bay. Found on the Atlantic coast of North America from Labrador, Canada, to Mexico.
Diet
Diet includes algae, plants, insects, small crustaceans and mollusks, other fish and carrion
Lifespan Up to 3 years
The answer would be the second answer: the property that gives it mass. This is because energy is t<span>he property of an object or system that enables it to do work. </span>
