Answer:
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A, I just took the quiz and that was the answer
Answer:
2H₂ + O₂ → 2H₂O
Explanation:
The expression of the equation is given as:
_H₂ + 2O₂ → 2H₂O
Now for expression above,
Reactants Products
H 2 4
O 4 2
to balance the equation, we use 2 moles of hydrogen gas and 1 mole of oxygen gas;
2H₂ + O₂ → 2H₂O
<u>Answer:</u> D. the ionic compound calcium fluoride
The correct option here is the fourth one.
<u>Explanation:</u>
Salt like compounds addition to water is likely to be inducing certain changes in temperature of freezing into solid and also alter the temperature of boiling.
It is noticed that addition of salts in water mostly tends to get lower the freezing temperatures from the original freezing point of water and among the given 3 options calcium fluoride tends to lower the freezing point most when compared to others.
Thus as vant hoff factor is highest factor for and the freezing point will be lowest.
1.75 moles of Solute or 1.75n.
To find this, you'll need to use the molarity equation which is M =
List the given items to organize better:
M (Molarity) = .35
V (Volume) = 5L [must always be in Liters]
n (Moles) = ?
Now, for the equation, substitute the variables with the given numbers:
.35 =
Isolate the variable by multiplying the volume, 5, onto both sides. This will give you the answer of:
1.75 = n
Hope this helps!