1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kenny6666 [7]
2 years ago
8

El lago Don Juan, es considerado el más salino de la Tierra, contiene en sus aguas 3.72 mol/kg de cloruro de calcio (CaCl2) y 0.

5 mol/kg de cloruro de sodio (NaCl). ¿Cuántos gramos de estas sales contiene por cada kilogramo de agua?
Chemistry
1 answer:
Alex73 [517]2 years ago
6 0

Answer:

412.8 \frac{gCaCl_2}{kg\ agua} \\\\29 \frac{gNaCl}{kg\ agua}

Explanation:

¡Hola!

En este caso, dado que se nos dieron las moles de cada sal por cada kilogramo de agua, es necesario para nosotros calcular los gramos por medio de la masa molar de estas, que son 110.98 g/mol y 58.44 g/mol respectivamente.

De este modo, realizamos las conversiones de moles a masa como se muestra a continuacion:

3.72\frac{molCaCl_2}{kg\ agua} *\frac{110.98gCaCl_2}{1molCaCl_2}=412.8 \frac{gCaCl_2}{kg\ agua} \\\\0.5\frac{molNaCl}{kg\ agua} *\frac{58.44gNaCl}{1molNaCl}=29 \frac{gNaCl}{kg\ agua}

¡Saludos!

You might be interested in
Which book has kinetic energy
bekas [8.4K]
Where is the picture
3 0
3 years ago
Plants contain xylem and phloem tissues for carrying water and food. What organ system in animals performs a similar function as
Nuetrik [128]

Answer:

digestive system may be the answer

3 0
3 years ago
At what temperature would 2.10moles of N2 gas have a pressure of 1.25atm and fill a 25.0 L tank
hodyreva [135]

Answer:

\large \boxed{\text{-92 $^{\circ}$C}}

Explanation:

We can use the Ideal Gas Law and solve for T.

pV = nRT

Data  

p = 1.25 atm

V = 25.0 L

n = 2.10 mol

R = 0.082 06 L·atm·K⁻¹mol⁻¹

Calculations

1. Temperature in kelvins

\begin{array} {rcl}pV & = & nRT\\\text{1.25 atm} \times \text{25.0 L} & = & \rm\text{2.10 mol} \times 0.08206 \text{ L}\cdot\text{atm}\cdot\text{K}^{-1}\text{mol}^{-1} \times T\\31.25&=&0.09847T\text{ K}^{-1}\\T& = &\dfrac{31.25}{\text{0.098 47 K}^{-1}}\\\\& = &\text{181 K}\end{array}

2. Temperature in degrees Celsius

\begin{array} {rcl}T & = & (181 - 273.15) \, ^{\circ}\text{C}\\& = & -92 \, ^{\circ}\text{C}\\\end{array}\\\text{The temperature of the gas is $\large \boxed{\mathbf{-92 \, ^{\circ}}\textbf{C}}$}

8 0
3 years ago
Which substance most likely has the strongest intermolecular forces?
serious [3.7K]

Answer: -

Acetic acid

Explanation: -

The intermolecular force of attraction depends on the strength or extent of Hydrogen bonding present in a substance.

Benzene and chloroform does not have hydrogen bonding being non polar molecule.

Water has hydrogen bonding being polar.

However acetic acid being most polar has the maximum hydrogen bonding.

Thus acetic acid has the strongest intermolecular forces of attraction.

4 0
3 years ago
Read 2 more answers
How would you seprate a mixture of sand and salt?
lys-0071 [83]
First, you mix the salt and sand with water, so the salt dissolves. Next, you filter the sand out, so you have the slat water and sand separated. Then, you evaporate the water, leaving the salt behind.
3 0
3 years ago
Read 2 more answers
Other questions:
  • A 38-lb child is prescribed acyclovir for chicken pox in an amount of 80 mg/ kg body weight per day to be divided in four doses
    9·1 answer
  • What mineral mostly form through chemical precipitation?
    8·1 answer
  • Some soils, like clay, hold water tightly. Other soils, like sand, let the water run through. What property of soils is MOST IMP
    10·1 answer
  • How many carbon atoms are in 7.05 moles of pyridine
    15·2 answers
  • If you have 1.29 moles of NaCl in 4 liters of solution, what is the molarity of the solution?
    5·1 answer
  • What is the SI unit for distance ?<br> <br> A) cm<br> <br> B) km<br> <br> C) m<br> <br> D) mm
    7·2 answers
  • 3. Una piedra que se tira verticalmente hacia arriba se mueve según la
    12·1 answer
  • Which of the following statements is true about what happens in all chemical reactions? A. The ways in which atoms are joined to
    6·1 answer
  • How many grams are there in 10.0 moles of Al2O3?
    8·1 answer
  • Calculate the following. Be sure to follow significant figure rules.<br><br> 1.) 1.2 m + 2.35 m =
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!