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disa [49]
3 years ago
5

Al añadir 1g de urea a 100 ml de agua a 20ºC, la presión de vapor pasa de 17,54 mmHg a 17,49 mmHg. Determina la masa molecular d

e la urea.
Chemistry
1 answer:
never [62]3 years ago
3 0

Answer: Los  estudios  teóricos  y  experimentales  han  permitido  establecer,  que  los  líquidos  poseen  propiedades  físicas  características.  Entre  ellas  cabe  mencionar:  la  densidad,  la  propiedad  de  ebullir, congelar y evaporar, la viscosidad y la capacidad de conducir la corriente eléctrica, etc. Cada líquido presenta valores característicos (es decir, constantes) para cada una de estas propiedades.             Cuando            un            soluto  y  un  solvente  dan  origen  a  una  solución,  la  presencia  del  soluto  determina  una  modificación  de  estas  propiedades  con  relación  a  su  estado  normal  en  forma  aislada,  es  decir,  líquido  puro.  Estas  modificaciones  se  conocen  como  PROPIEDADES  DE  UNA SOLUCIÓN.

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If I have one mole of sulfur, how many atoms would that be?
krok68 [10]

Answer:

Atoms of sulfur = 9.60⋅g32.06⋅g⋅mol−1×6.022×1023⋅mol−1

Explanation:

because the units all cancel out, the answer is clearly a number, ≅2×1023 as required.

7 0
3 years ago
3. A helium laser emits light with a wavelength of 6.33 x 10^-7m. What is
HACTEHA [7]

Answer:

4.52 x 10¹⁴ cycles/s

Explanation:

From c = f·λ => f = c/λ = (3.0 x 10⁸ m/s)/(6.63 x 10⁻⁷m) = 4.52 x 10¹⁴ cycles/s.

f = frequency = ?

λ = wavelength = 6.63 x 10⁻⁷ meter

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2 years ago
What is the study of clouds called?
Kamila [148]
The answer is Nephology
5 0
3 years ago
The chemical reaction involving an acid and a base or alkali is know as a ​
saul85 [17]

Ans

Neutralization reaction

Explanation:

The meaning is

acid + base = salt + water

5 0
3 years ago
Read 2 more answers
a culinary student fills a 40ml container with 37.2 grams of vegetable oil.What is the density of the oil
Lynna [10]

Answer:

<h2>0.93 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 37.2 g

volume = 40 mL

We have

density =  \frac{37.2}{40}  \\  = 0.93

We have the final answer as

<h3>0.93 g/mL</h3>

Hope this helps you

4 0
2 years ago
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