Answer:
both melting point and boiling points are lower
this is because it becomes easier to break those bonds (they’re actually intermolecular forces) between the atoms sinc they’re weak, and thus require less energy to break.
Answer:
55.3 g / 100.0 g of water.
Explanation:
- From the solubility curve determine the solubility of ammonium chloride in g/100 g of water at 60°C.
<em>The theoretical value is 55.3 g.</em>
Answer:
4 significant figures
Explanation:
505 has 3 significant figures
450.25 has 5 significant figures
First do simple subtraction
505 - 450.25 =54.75
And then evaluate any number that has significance or is important if the decimal were to be moved.
4 significant figures
Answer:
126g
Explanation:
Data obtained from the question include:
Mole of Fe = 2.5moles
Molar Mass of Fe = 56g/mol
Mass of Fe =?
Number of mole = Mass/Molar Mass
Mass = number of mole x molar Mass
Mass of Fe = 2.25 x 56
Mass of Fe = 126g
Therefore, the mass in 2.25mol of Fe is 126g
Bromide ions donates an electron in redox reactions.
<u>Explanation:</u>
- In these redox reactions, the halide ions like bromide donates a pair of electrons and acts as a reducing agents, but itself gets oxidized to bromine.
- In this process, the oxidation state of bromide ion is increased from -1 to 0 oxidation state, that is Br⁻ (-1) to Br₂ (0), thus reduces the compound and oxidizes by itself.
- Bromide ion is a strong reducing agent, thereby reduces sulfuric acid which changes to sulfur di oxide, but this doesn't happen in the case of chloride and fluoride ions as they are not having that much capacity like bromide and iodide ions.
