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
olga55 [171]
3 years ago
14

How many kilograms of solvent would contain 0.43 mol of CaO in a 2.5 molality solution

Chemistry
2 answers:
Kobotan [32]3 years ago
5 0

Answer:

0.172 Kg

Explanation:

Given data:

Kg of solvent = ?

Moles of solute = 0.43 mol

Molality = 2.5 m

Solution:

Formula:

m = moles / Kg of solvent

by putting values,

2.5 m = 0.43 mol / kg of solvent

Kg of solvent = 0.43 mol / 2.5 m

Kg of solvent = 0.172 Kg

dalvyx [7]3 years ago
4 0
<h3>Answer:</h3>

0.024 kg CaO

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Chemistry</u>

<u>Aqueous Solutions</u>

  • Molarity = moles of solute / liters of solution

<u>Atomic Structure</u>

  • Reading a Periodic Tables
  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

0.41 mol CaO

2.5 M Solution

<u>Step 2: Identify Conversions</u>

1000 g = 1 kg

Molar Mass of Ca - 40.08 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of CaO - 40.08 + 16.00 = 56.08 g/mol

<u>Step 3: Convert</u>

  1. Set up:                                \displaystyle 0.43 \ mol \ CaO(\frac{56.08 \ g \ Cao}{1 \ mol \ CaO})(\frac{1 \ kg \ CaO}{1000 \ g \ CaO})
  2. Multiply:                              \displaystyle 0.024114 \ kg \ CaO

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 2 sig figs as our lowest.</em>

0.024114 kg CaO ≈ 0.024 kg CaO

You might be interested in
PLEASE ANSWER
Vikki [24]
D) refracted
because , the light changes direction.. causing the penny to look bigger than it is.
4 0
3 years ago
True/False Indicate whether the sentence or statement is true or false. The number 1 234 000 in scientific notation is equal to
Shalnov [3]
False bc 1.234 x 10^5 is 123400
8 0
3 years ago
HELP a #QUEEN out pls??
Anastaziya [24]

Answer:

what the acctual fhuck typa chinese algorithim is dis, youve got me bamboozled frffr

Explanation:

jk jk.........

__5___SiO2 + ___2___CaC2 → __5___Si + ____2___CaO + __4___CO2

4 0
2 years ago
Consider the following reaction.Cr2O3(s) + 3CCl4(l) 2CrCl3(s) + 3COCl2(g). When the green solid is mixed with the colorless liq
Elena L [17]

Answer:

The answer to your question is: letter B

Explanation:

Reaction

                 Cr2O3(s)   +   3CCl4(l)   ⇒  2CrCl3(s)  +   3COCl2(g)

From the information given and the reaction, we can conclude that:

Green solid = Cr2O3 (s)     "s" means solid

Colorless liquid = CCl4 (l)    "l" means liquid   and is the other reactant

Purple solid = CrCl3(s)        CrCl3 is purple and "s" solid

Then, as a green specks remains it means that the excess reactant is Cr2O3, so, CCl4 is the limiting reactant.

6 0
3 years ago
In order to complete a convection current, the rising material must eventually ____ Earth.
MissTica
Hello there.

Question: <span>In order to complete a convection current, the rising material must eventually ____ Earth.

Answer: It is C. sink back into.

Hope This Helps You!
Good Luck Studying ^-^</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which list of formulas represents compounds, only?
    8·2 answers
  • 6. 30.0 g of each of the following acids are needed. Find the volume of each that must be measured out in a graduated cylinder.
    13·2 answers
  • What is a synonym
    9·2 answers
  • Entropy means that _________.A. the quantity of usable energy declines with each transformationB. energy can be neither created
    15·1 answer
  • The compound Fe2O3 contains how many atoms? <br> A) 2 <br> B) 3 <br> C) 5 <br> D) 7
    11·2 answers
  • Which of the units is NOT a measure of pressure ?
    8·1 answer
  • If you have exactly 2.00 moles each, of two different substances, then which of the following must be true about the two samples
    10·1 answer
  • Addition of 6 M HCl to which substance will not result in gas evolution? Please explain why.A) AlB) ZnC) K2CO3D) NaNO3
    8·1 answer
  • Does water have greater heat of fusion or greater heat of vaporization?
    5·1 answer
  • I need help in chemistry 10th grade (sophomore)
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!