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
lawyer [7]
2 years ago
5

A hydrate of CoCl2 has a mass of 15.80 g before heating. After heating the mass of the anhydrous compound is found to be 9.32 g

explain how you would determine the formula of the hydrate and then write out the full name of the hydrate
Chemistry
1 answer:
elixir [45]2 years ago
5 0

Explanation:

Molar mass of Cobalt (II) chloride = 129.8g/mol

Moles of CoCl2 = 9.32/129.8 = 0.0718mol

Mass of H2O lost after heating = 15.80 - 9.32 = 6.48g

Moles of H2O = 6.48/18 = 0.36mol

Mole ratio of CoCl2 : H20

= 0.0718mol : 0.36mol

= 1 : 5

Hence the formula is CoCl2 . 5H2O, which is Copper (II) chloride pentahydrate.

You might be interested in
Solids, liquids, and gases are three common states of matter. in which of these physical states would a water molecule likely ha
melamori03 [73]
The States of Matter are classified into solid, liquid, and gas. Among these physical states, if we are going to refer to the water molecules, the one that would possess the greatest energy is gas. If you would take the energy of gas, this would become liquid. The answer is option C.
8 0
2 years ago
An aqueous HCL solution has a proton concentration equal to 6.00 mol/L. The HCL concentration in this solution is ————M.
Harman [31]

Answer:

HCl conc.= 6.0mol/L

Explanation:

From the dissociation of HCl= 1 mole H+ and 1mol Cl-, which is equivalent stoichiometrically in concentration to that of 1 mol HCl,

4 0
3 years ago
What decides if an atom will be a cation or an anion?
JulijaS [17]

The loss or gain of electrons

Explanation:

The loss or gain of electrons determines if an atom will become a cation or anion.

A cation is a positively charge ion

An anion is a negatively charged ion.

In an atom, we have sub-atomic particles:

 Protons are the positively charged particles

 Electrons are negatively charged

  Neutrons carry no charges

Only electrons can be lost or gained in chemical processes that forms cations and anions.

When a neutral atom gains electron, it has more electrons than protons. This makes it negatively charged and we call it an anion.

When a neutral atom loses an electron, the number of protons is more. We call it a cation.

Learn more:

Cations brainly.com/question/4670413

#learnwithBrainly

7 0
3 years ago
What are some problems chemist must consider when developing new technologies?
Ratling [72]
The study of chemistry helps us understand the nature of the world around us. Chemistry is always developing to keep up with any phenomenon that appears in nature.
Therefore, scientists and chemists are always developing new technologies. However, chemists must very careful when developing these new technologies. They should consider any bad chemical reactions that might occur and also chemicals that harmful to either the individuals or the environment.
3 0
3 years ago
According to the work principle, the ration of work output to work input is always _____.
vekshin1

Answer:

less than one.

Explanation:

5 0
2 years ago
Other questions:
  • List 10 examples of substances that are beneficial in small quantities but poisonous in large doses
    10·2 answers
  • What is the bond angle of a regional planar molecule
    10·1 answer
  • If you combine 370.0 mL of water at 25.00 °C and 110.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Us
    15·1 answer
  • Magnesium and nitrogen react in a combination reaction to produce magnesium nitride. 3 mg + n2 ? mg3n2. in a particular experime
    5·1 answer
  • Help with science periodic table giving brainly and thanks
    10·2 answers
  • What did theodor schwann do??? for the cell theory (what is the theory)
    14·1 answer
  • In what circumstances do scientists use observational research and opinion based research?
    10·1 answer
  • What must happen for a liquid water to become water vapor ?
    9·1 answer
  • What is the pOH of a solution that has a pH of 2
    5·1 answer
  • How could you put the understanding of the size of a drop of water to good use in Chemistry?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!