Bskbshsisbusvsuvshvsudvudvdvduvdudbidhdudvubdjdufvdvgdgdhdhfjfufkfkjffjfhfhfb
Answer:
The answer is " salt".
Explanation:
Hey there!
When any acids and base react with eachother, they forms water and respective salts.
For example:
HCl + NAOH = NACl + H2O.
<em>Hope it helps!</em>
Answer : The mass of calcium chloride (in g) needed is, 1.92 grams.
Explanation : Given,
Boiling point of elevation constant 
for water = 
Mass of water (solvent) = 
Molar mass of 
= 110.98 g/mole
Formula used :
where,
= change in boiling point = 
i = Van't Hoff factor = 3 (for electrolyte)
= boiling point constant for water
m = molality
Now put all the given values in this formula, we get
Therefore, the mass of calcium chloride (in g) needed is, 1.92 grams.
Answer:
I think it would be a liquid.
Explanation:
If the temperature hits a certain point, it will turn to ice. If the ice gets exposed to heat, it will melt and return back to it's natural form, a lqiuid. If the liquid is exposed to enough heat, it will evaporate. Not sure if this is right, but I tried my best!
Answer:
1.16L
Explanation:
First, let us generate the balanced equation for the reaction. This is illustrated below
2Mg + O2 —> 2MgO
Now let us covert 2.5g of Mg given in the question to moles. This is illustrated below:
Molar Mass of Mg = 12g/mol
Mass of Mg = 2.5g
Number of mole of Mg =?
Number of mole = Mass /Molar Mass
Number of mole of Mg = 2.5/24 = 0.104mole
From the equation,
2moles of Mg required 1mole of O2.
Therefore, 0.104mole of Mg will require = 0.104/2 = 0.052mole of O2
Now let us calculate the volume occupy by 0.052mole of O2. This is shown below.
1mole of a gas occupy 22.4L at stp
Therefore, 0.052mole of O2 will occupy = 0.052 x 22.4 = 1.16L
Therefore, 1.16L of O2 is required for the reaction
