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
marshall27 [118]
2 years ago
9

What is the molality of a solution containing 10.0 G of NA2 S04 and 1000.0 G of water

Chemistry
1 answer:
galina1969 [7]2 years ago
7 0

Explanation:

1 literThe total of water is equal to 1000.0 g of water

we need to find the molality of a solution containing 10.0 g of dissolved in  Na₂S0₄1000.0 g of water

1. For that find the molar mass

Na:  2 x 22.99= 45.98

S:  32.07

O:  4 x 16= 64

The total molar mass is 142.05

We have to find the number of moles, y

To find the number of moles divide 10.0g by 142.05 g/mol.

So the number of moles is 0.0704 moles.

For the molarity, you need the number of moles divided by the volume. So, 0.0704 mol/1 L.

The molarity would end up being 0.0704 M

The molality of a solution containing 10.0 g of Na2SO4 dissolved in 1000.0 g of water is  0.0704 Mliter

You might be interested in
Which of the following arrangements of the visible colors of light is in the correct order of increasing energy?
IrinaK [193]
Violet, indigo, blue, green, yellow, orange, red
4 0
3 years ago
Which element has the electron configuration [Rn] 7s2 5f14 6d4 ?
nexus9112 [7]

Answer:

Rn] 5f14 6d4 7s2 mp: none d: none. Seaborgium ..... Element. Density. Boiling or Melting Point in °C. Electron Configuration. Symbol.

Explanation:

3 0
3 years ago
Read 2 more answers
A student forgets to weigh a mixture of sodium bromide dihydrate and magnesium bromide hexahydrate. Upon strong heating, the sam
stira [4]

The mass percent of each compound is

  • (NaBr*2H2O)=85.71 percent
  • (MgBr2*6H2O)=14.29 percent

<h3>The mass percent equation is as follows.</h3>

The formula mass percent is the most effective way to express mass percent: mass percent = (mass of chemical x total mass of compound) times 100. Add 100 to the top value to get the value expressed as a percentage.

<h3>What percentage by mass does a solution have?</h3>

By multiply the grams of solute per gram of solution by 100, it is possible to get the mass percent of a solution.

The molar mass of each element and the mass of each element contained in a mole of the compound are both solved for in the Mass Percent formula.

Learn more about Mass Percent here  

brainly.com/question/26150306

#SPJ4

4 0
1 year ago
What is the balanced equation for the manufacture of ethanol from glucose
Darina [25.2K]

Answer:

C6H12O6 → 2C2H5OH + 2CO2

Explanation:

Glucose is an organic molecule, specifically a sugar, with the formula C612O6 while ethanol is another organic molecule with formula; C2H5OH.

However, as rightly said in this question, ethanol can be got from glucose via a process called fermentation in the presence of a catalyst called YEAST. The balanced equation is as follows:

C6H12O6 → 2C2H5OH + 2CO2

7 0
3 years ago
A student was trying to obtain lithium by electrolysis of aqueous lithium chloride. Was he successful?
Wittaler [7]

The student was not successful.

Consider the standard reduction potentials.

Li⁺ + e⁻ ⇌ Li;                       E° = -3.04 V

2H₂O + 2e⁻ ⇌ H₂ + 2OH⁻; E° = -0.83 V

To reduce Li⁺ to Li, the student must apply 3.04 V.

However, it takes only 0.83 V to reduce water to hydrogen.

Thus, the student will get H₂ instead of Li.

6 0
3 years ago
Other questions:
  • Why is potassium iodine electronically neutral
    9·2 answers
  • What is the halogen in period 5?? it has six letters
    7·1 answer
  • Vitellium (Vi) has the following composition:
    12·1 answer
  • What is the pH of a solution when the [OH - ] = 1 x 10 -3
    5·1 answer
  • What is a base? chemistry
    12·2 answers
  • Which of the following could be a benefit of climate change?
    15·1 answer
  • Two objects are described below.
    6·1 answer
  • Determine the mass in grams of 3.45 x 10^2 mol Co.
    10·1 answer
  • Which of the following represents a neutralization reaction which hydrofluoric acid and sodium hydroxide(a base) react to produc
    7·1 answer
  • How many valance electrons does He need to get to 8
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!