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
Ber [7]
3 years ago
7

Distinguish a substance from a mixture. give two examples of each

Chemistry
1 answer:
amm18123 years ago
4 0
substance is matter of particular or definite chemical constitution ex: iron, methane
mixture are two or more substances that have been combined to retain their individual chemical characteristics ex: salt water, cola
You might be interested in
Which combination(s) of alkyl bromide and carbonyl compound can be used to prepare the following product by reaction of the Grig
Fiesta28 [93]

Answer:

D. only 2 and 3

Explanation:

The Grignard compound or reagent is a highly reactive compound formed from the reaction between an ether solvent containing magnesium and a haloalkane. This compound can also be used to create a C-C bond (carbon-carbon). Based on the properties and structure of a Grignard compound, the answer is option D.

7 0
3 years ago
Insert the values from the question above for x, y, z, & n into KxFey(C204)z nH20 anod provide the correct coefficients to b
vlada-n [284]

Answer:

Explanation:

brainly is so gay i swear

8 0
2 years ago
tert-Butyl alcohol is a solvent with a Kf of 9.10 ∘C/m and a freezing point of 25.5 ∘C. When 0.807 g of an unknown colorless liq
mylen [45]

Answer: ethylene glycol (molar mass = 62.07 g/mol)

Explanation:

Depression in freezing point :

Formula used for lowering in freezing point is,

\Delta T_f=k_f\times m

or,

\Delta T_f=k_f\times \frac{\text{mass of solute}}{\text{molar mass of solute}\times \text{weight of solvent in kg}}

where,

T_f = change in freezing point

k_f = freezing point constant= 9.10^0C/m

m = molality

Given mass of solute = 0.807 g

Molar mass of solute=? g/mol

weight of solvent in kg= 11.6 g=0.0116 kg

\Delta T_f=T^{o}_f-T_f=25.5^0C-15.3^0C)=10.2^0C

10.2=9.10\times \frac{0.807}{\text{molar mass of solute}\times 0.0116kg}

{\text{molar mass of solute}}=62.07 g/mol

Thus the solute is ethylene glycol which has same molecular mass as calculated, i.e 62.07 g/mol.

6 0
2 years ago
What did sewage treatment in Ancient Rome and 19th century London have in common?
dolphi86 [110]

Answer:

The history of water supply and sanitation is one of a logistical challenge to provide clean water and sanitation systems since the dawn of civilization. Where water resources, infrastructure or sanitation systems were insufficient, diseases spread and people fell sick or died prematurely.

Explanation:

5 0
3 years ago
Which statement is true about the total mass of the reactants during a chemical change?
Mice21 [21]
It is greater than the total mass of the products
4 0
3 years ago
Other questions:
  • Which part of making a solution always releases energy?
    13·1 answer
  • Concentrated sulfuric acid is generally used to promote acid-catalyzed dehydration because:
    9·1 answer
  • What components of an endothermic reaction have a higher heat content
    15·1 answer
  • Why are bottles made from amorphous solid's such as plastic and glass
    6·1 answer
  • 99 points
    9·2 answers
  • The percent composition of all elements in HClO3 is:
    8·1 answer
  • The natural tendence of an object to resist change in its state of motion is:
    9·1 answer
  • When are ions formed?
    12·1 answer
  • Part APart complete A sample of sodium reacts completely with 0.568 kg of chlorine, forming 936 g of sodium chloride. What mass
    6·1 answer
  • Where is the sun located?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!