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
grigory [225]
3 years ago
5

A chemist wants to make 6.5 L of a .350M CaCl2 solution. What mass of CaCl2(in g) should the chemist use?

Chemistry
2 answers:
kotykmax [81]3 years ago
5 0
First M stands for Molarity which is (moles of solute) / (Liters of solution). we also know that moles = (mass) / (molar mass). so we can form some equations here. We know:
Molarity (M) = moles (mol) / Liters (L)
moles (mol) = (mass) / (molar mass)

we can substitute the (mass) / (molar mass) for (moles) and get:
M = [(mass) / (molar mass)] / Liters

we can now isolate mass and get
M * Liters * molar mass = mass

now we need to find the molar mass of CaCl2 which is 110.98 g/mol

plug the values in and get
.350M * 6.5L * 110.98 g/mol = mass

mass = 252.4795g however the 6.5L has only 2 sig figs so i would say

mass CaCl2 = 2.5 * 10 ^2 g
LiRa [457]3 years ago
4 0

Known: M = 350 M

             Mol = 6.6 L

             Molar mass of CaCl2 = 110.98 g / ml

Asked: Mass of CaCl2?

Answer: First, we will use the formula:

               M = {(mass) / (molar mass)} / mol

               => mass = M x mol x molar mass

               Second, enter a known value

               mass = 350 M x 6.5 L x 110.98 g / mol

               CaCl2 mass = 2.5 x 10 ^ 2 g

               So, the mass of CaCl2 is 2.5 x 10 ^ 2 g.

<h2>Further Explanation </h2>

Molarity is a quantity that can express the number of moles of solute in each unit volume of solution. The unit of molarity is the molar (M) which is equal to mol/liter. If there are (n) moles of compounds dissolved in (V) liters of a solution.

A mole is a mathematically obtained unit, involving several other units such as the relative molecular mass, and the average atomic mass. A mole is defined as the number of particles contained in a particular substance where the number is equal to the number of atoms contained in 12.00 grams of C-12 atoms. C-12 is a carbon isotope that has a definitive standard atomic weight of 12. Therefore, the mass of this carbon isotope has an exact weight of 12 grams. The use of carbon as a basis for determination because carbon is the element most often and easily found in nature.

The chemical reaction is the event of chemical change from substances that react (reactants) into substances that result from reactions (products). In chemical reactions, new substances are always produced with new properties. Chemical reactions are written using the element symbol. Let's look at how to express a reaction using symbols.

Learn more

definition of Molarity brainly.com/question/12264701

definition of A mole brainly.com/question/12264701

Details

Grade: College

Subject: Chemistry

keywords: Molarity

You might be interested in
If a solution has a pOH of 3 what is the pH? Hint pH + pOH= 14
mash [69]

Answer:

11

Explanation:

You should have plugged the pOH into the hint.

pH+3=14

pH=11

Hoped this helped; in the future, please read the directions carefully :)

5 0
3 years ago
8. Calculate the molar mass of an alkane with the mole-<br>cular formula C H18.​
andreyandreev [35.5K]

Answer:

Molar mass of CH18 =30

Explanation:

CH18

Molar mass of carbon = 12

Molar mass of hydrogen (H) = 1

CH18 = 12 + 1 (18) = 12 +18 = 30

5 0
2 years ago
Read 2 more answers
Which is the MOST accurate description of diffusion of materials through the cell membrane in order to maintain homeostasis?
krok68 [10]
Hello there! 

I believe "<span>b. Nutrients move from an area of lower concentration to an area of higher concentration." is correct!

Have a cool day! -Wajiha</span>
7 0
3 years ago
Read 2 more answers
Which is the smallest part of a compound called?
lidiya [134]
The answer is molecule

6 0
3 years ago
Read 2 more answers
Which of these is an example of a physical change ?
Gre4nikov [31]
It's 1. Melting a substance. The rest are chemical changes
8 0
3 years ago
Other questions:
  • What is the largest layer of Earth?
    8·1 answer
  • Who discovered Chemical Energy?
    11·2 answers
  • The term “3 FeCI 2” in a balanced equation says
    13·1 answer
  • How does a bannana flaot
    14·2 answers
  • Choose the atom with the largest atomic radius. CI, S, Na,SI
    12·1 answer
  • How many molecules of ammonia will be produced?<br><br><br> 4<br><br> 2<br><br> 8<br><br> 6
    9·1 answer
  • What do Oxygen and Hydrogen make?
    15·1 answer
  • In a bowl of 50 skittles, you have 12 yellow, 9 orange, 11 red, and 13 green. The rest of the skittles are purple. What percenta
    5·1 answer
  • How much NaCl would you dissolve and dilute to the 100.00 mL mark in a volumetric flask with DI H2O to prepare a 0.825 M sodium
    10·1 answer
  • According to kinetic-molecular theory, which of the following would not be considered an ideal gas? Check all that apply.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!