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
Rina8888 [55]
3 years ago
6

Calculate the mole fraction of cai2 in an aqueous solution prepared by dissolving 0.400 moles of cai2 in 850.0 g of water.

Chemistry
1 answer:
alukav5142 [94]3 years ago
7 0
1) Formulas:

a) mole fraction of component 1, X1

X1 =  number of moles of compoent 1 / total number of moles

b) Molar mass = number grams / number of moles => number of moles =  number of grams / molar mass


2) Application

Number of moles of CaI2 = 0.400

Molar mass of water = 18.0 g/mol

Number of moles of water: 850.0 g / 18.0 g/mol = 47.22 mol

Total number of moles = 0.400 + 47.22 =47.62

Molar fraction of CaI2 = 0.400 / 47.62 = 0.00840
You might be interested in
1. A solution with a pH of 9 has a pOH of
Alecsey [184]

Answer:

strength = 10⁻²/10⁻³ = 10 times more acidic

Explanation:

1. A solution with a pH of 9 has a pOH of

pH + pOH = 14 => pOH = 14 - pH = 14 - 9 = 5

2. Which is more acidic, a solution with a pH of 6 or a pH of 4?

pH of 4 => Higher [H⁺] = 10⁻⁴M vs pH of 6 => [H⁺] = 10⁻⁶M

3. How many times more acidic is a solution with a pH of 2 than a solution with a pH of 3?

soln with pH = 2 => [H⁺] = 10⁻²M

soln with pH = 3 => [H⁺] = 10⁻³M

strength = 10⁻²/10⁻³ = 10 times more acidic

4. What is the hydrogen ion concentration [H + ] in a solution that has a pH of 8?

[H⁺] = 10^-pH = 10⁻⁸M

5. A solution has a pOH of 9.6. What is the pH? (Use the formula.)

pH + pOH = 14 => pH = 14 - 9.6 = 4.4

8 0
3 years ago
when writing numbers using scientific notation, numbers greater than one have..... exponents and numbers less than one have.....
Sav [38]
Positive and negative
8 0
3 years ago
The curved upper surface of a liquid in a column of liquid?
Jlenok [28]

Answer:

The answer would be meniscus.

5 0
3 years ago
Verdadero o falso: Dos sustancias en estado gaseoso(O2, N2), presentan igual
DochEvi [55]
Srry I can’t help u because I can’t understand ur English I don’t speak French Srry I’m learning French in school
7 0
3 years ago
What is the most reactive metal in Period 4 of the periodic table?
kykrilka [37]

Answer:

Potassium

Explanation:

5 0
2 years ago
Other questions:
  • Based on the kinetic molecular theory (KMT), which statement is true?
    15·1 answer
  • When compounds are formed, will its heat give off?​
    11·1 answer
  • Consider the following balanced equation: SiO2(s)+3C(s)→SiC(s)+2CO(g) Complete the following table showing the appropriate numbe
    8·2 answers
  • Place the following elements in order of increasing electronegativity.K Cs PA. K < P < CsB. P < Cs < KC. Cs < K &
    15·1 answer
  • Which is a characteristic of a strong base
    7·1 answer
  • What is the basic unit of mass in the metric system?
    5·2 answers
  • Basilosaurus cetoides was a large mammal that existed 35 million years ago. It was 20 m long and had a large skull, incompletely
    15·1 answer
  • At 6 atmosphere pressure, the volume of a gas is 1200 ml. What pressure is
    11·1 answer
  • Đốt cháy hết 9g kim loại magie Mg trong không khí tích tụ được 15g hợp chất magie oxit MgO. Biết rằng magie cháy là xảy ra phản
    5·1 answer
  • Which of the following organisms do not produce uric acid as the excretory product?​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!