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
marta [7]
3 years ago
7

An aqueous magnesium chloride solution is made by dissolving 6.92 6.92 moles of MgCl 2 MgCl2 in sufficient water so that the fin

al volume of the solution is 2.00 L 2.00 L . Calculate the molarity of the MgCl 2 MgCl2 solution.
Chemistry
1 answer:
Naddika [18.5K]3 years ago
3 0

Answer:

[MgCl₂] = 0.036 M

Explanation:

Molarity are the moles of solute in 1L of solution.

For this case, our solution's volume is 2L

First of all, we convert the mass of solute (MgCl₂) to moles

6.92 g . 1mol / 95.2 g = 0.0727 moles

Now, we make a rule of three:

In 2L of solution we have 0.0727 moles of solute

Then, in 1L of solution we may have, 1L . 0.0727 mol / 2L = 0.036 M

You might be interested in
How does 2 Na (s) + Cl2 (g) = NaCl (s) represent the coefficient in the chemical equation
Elenna [48]

Answer:

The 2 would be placed in front of the reactant Na and in front of the product NaCl

2Na + Cl2 = 2NaCl

Explanation:

This is because the ratio of elements needs to be balanced on both sides.

On the reactants side, there are 2 Na molecules and 2 Cl molecules

On the products side, there are 2 Na molecules and 2 Cl molecules

So, now the equation is balanced

3 0
3 years ago
Mass = 325.2 volume = 62.5 cm what's the density ?
boyakko [2]

Answer:

159571 lb or cubic feet

Explanation:

3 0
3 years ago
Read 2 more answers
Why is chemistry important? i need 5 paragraph please
Travka [436]

Answer:

Chemistry has a reputation for being a complicated and boring science, but for the most part, that reputation is undeserved. Fireworks and explosions are based on chemistry, so it's definitely not a boring science. If you take classes in chemistry, you'll apply math and logic, which can make studying chemistry a challenge if you are weak in those areas. However, anyone can understand the basics of how things work, and that's the study of chemistry. In a nutshell, the importance of chemistry is that it explains the world around you.

Chemistry Explained

Cooking: Chemistry explains how food changes as you cook it, how it rots, how to preserve food, how your body uses the food you eat, and how ingredients interact to make food.

Cleaning: Part of the importance of chemistry is it explains how cleaning works. You use chemistry to help decide what cleaner is best for dishes, laundry, yourself, and your home. You use chemistry when you use bleaches and disinfectants, even ordinary soap and water. How do they work? That's chemistry.

Medicine: You need to understand basic chemistry so you can understand how vitamins, supplements, and drugs can help or harm you. Part of the importance of chemistry lies in developing and testing new medical treatments and medicines.

Environmental Issues: Chemistry is at the heart of environmental issues. What makes one chemical a nutrient and another chemical a pollutant? How can you clean up the environment? What processes can produce the things you need without harming the environment?

We humans are all chemists. We use chemicals every day and perform chemical reactions without thinking much about them. Chemistry is important because everything you do is chemistry! Even your body is made of chemicals. Chemical reactions occur when you breathe, eat, or just sit there reading. All matter is made of chemicals, so the importance of chemistry is that it's the study of everything.

Importance of Taking Chemistry

Everyone can and should understand basic chemistry, but it may be important for you to take a course in chemistry or even make a career out of it. It's important to understand chemistry if you are studying any of the sciences because all of the sciences involve matter and the interactions between types of matter.

Students wanting to become doctors, nurses, physicists, nutritionists, geologists, pharmacists, and (of course) chemists all study chemistry. You might want to make a career out of chemistry because chemistry-related jobs are plentiful and high-paying. The importance of chemistry won't be diminished over time, so it will remain a promising career path.

6 0
3 years ago
Read 2 more answers
can we stir silver nitrate solution with copper spoon? why or why not? support your answer with reason.​
HACTEHA [7]

↪ Hello miss "galaxyu035" here's your answer for the question you wrote.

Answer :

No, <u>we cannot</u> stir silver nitrate solution with a copper spoon <u>because</u> , copper is more reactive than silver. Thus,it would displace silver from the silver nitrate solution forming copper nitrate.

---

Remember if my answer helps you! Might give me a thank you! By clicking the heart button .

8 0
3 years ago
9. How much power is flowing into your house if the voltage is 120 V and the current is 50 A? Use the formula P = VI.
lyudmila [28]
4800 mannnnnnnnnnnnnn
4 0
3 years ago
Other questions:
  • How are the amounts of hydrogen and oxygen gas made from the electrolytic decomposition of water, related to the chemical formul
    12·1 answer
  • solid sodium reacts violently with water producing heat, hydrogen gas and sodium hydroxide. How many molecules of hydrogen gas a
    11·1 answer
  • HELP!!!
    6·1 answer
  • The name given to the force of attraction of the electrons of one atom for the protons of another atom in close proximity is?
    11·2 answers
  • If the same large amount of heat is added to a 250 g piece of aluminum and a 150 g piece of aluminum, what will happen? The 150
    12·1 answer
  • Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transit
    6·1 answer
  • SCIENCE HW PLEASE HELP ASAP
    9·1 answer
  • Qualitative test for formaldehyde​
    5·1 answer
  • What type of change,physical or chemical. Take place in each of the following water vapor condence to form rain
    5·1 answer
  • A student plots the magnetic field of a bar magnet using a compass the student centers the bar magnet in the middle of a piece o
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!