You can never say that any substance is a liquid, a solid, or a gas. Every substance you name can be all of those, depending on the TEMPERATURE.
At standard pressure . . .
-- Iodine is solid below 113.7°C, and gas above 184°C .
-- Bromine is solid below -7.2°C, and gas above 58.8°C .
-- "Room temperature" is considered to be the range from 20°C to 23.5°C.
-- Iodine is solid in that range.
-- Bromine one of only two elements that are known to be liquids AT
ROOM TEMPERATURE. The other one is mercury ... a metal.
Answer:
Here:
Explanation:
So ionic bonds are formed due to electrostatic attraction. For example, in NaCl, Na gives an electron to Cl, getting Na+ and Cl- where + and - charges attract and form an ionic bond.
I believe it's Hirsutism, maybe list options if there are any next time! :)
Answer:
You will generate 0.124 moles of aluminum when you react 0.372 moles of potassium
Explanation:
Determine the reaction:
3K + AlBr₃ → Al + 3KBr
Ratio is 3:1
3 moles of K can produce 1 mol of Al
So, 0.372 moles of K, may produce (0.372 .1) /3 = 0.124 moles of Al
Answer:
16.27 g.
Explanation:
- It is known that every 1.0 mol of a compound contains Avogadro's no. of molecules (6.022 x 10²³).
<u><em>Using cross multiplication:</em></u>
1.0 mol of N₂ gas contains → 6.022 x 10²³ molecules.
??? mol of N₂ gas contains → 3.50 x 10²³ molecules.
∴ The no. of moles of N₂ gas = (1.0 mol)(3.50 x 10²³ molecules)/(6.022 x 10²³ molecules) = 0.5812 mol.
∴ The mass of 3.50 x 10²³ molecules of N₂ gas = (no. of moles)*(molar mass) = (0.5812 mol)(28.0 g/mol) = 16.27 g.
