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alekssr [168]
3 years ago
10

Elemento quimico con inicial "S"​

Chemistry
1 answer:
gtnhenbr [62]3 years ago
4 0

Answer:

El elemento es azufre.

Explanation:

Espero que esto ayude a marcar el MÁS CEREBRAL !!!

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When 0.49 g of a molecular compound was dissolved in 20.00 g of cyclohexane, the freezing point of the solution was lowered by 3
IRISSAK [1]

Answer: The molecular mass of this compound is 131 g/mol

Explanation:

Depression in freezing point:

\Delta T_f=i\times k_f\times \frac{w_2\times 1000}{M_2\times w_1}

where,

\Delta T_f = depression in freezing point  = 3.9^oC

k_f = freezing point constant  = 20.8^0C/m

m = molality

i = Van't Hoff factor = 1 (for non-electrolyte)

w_2 = mass of solute = 0.49 g

w_1 = mass of solvent (cyclohexane) = 20.00 g

M_2 = molar mass of solute = ?

Now put all the given values in the above formula, we get:

(3.9)^oC=1\times (20.8^oC/m)\times \frac{(0.49g)\times 1000}{M_2\times (20.00g)}

M_2=131g/mol

Therefore, the molar mass of solute is 131 g/mol

7 0
3 years ago
What is the molarity of 6 moles (mol) of NaCl dissolved in 2 L of water?
Mama L [17]

Answer:

C:  \frac{6 mol}{2 L}

Explanation:

we can use the molarity equation

M = \frac{mol}{L}

so to find M we plug in what we know, which is 6 moles of NaCl and 2 L of water, which gives us:

\frac{6 mol}{2 L}

8 0
2 years ago
Which symbol represents a particle that has the same total number of electrons as S2-?
Oksanka [162]
The correct answer is D) Ar
8 0
3 years ago
Calculate how many grams of oxygen form when each quantity of reactant completely reacts.. . 2HgO----->2Hg+O2
goblinko [34]
<span>6.96g HgO
hope it helps.
</span>
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3 years ago
When The appearance of a system changes does the mass of the system also change why why not
seropon [69]
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5 0
3 years ago
Read 2 more answers
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