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
suter [353]
3 years ago
14

Classify each of the following as a pure substance or a mixture. If a mixture, indicate whether it is homogeneous or heterogeneo

us:_______. (a) rice pudding, (b) seawater, (c) magnesium, (d) crushed ice.
Chemistry
1 answer:
Mashutka [201]3 years ago
8 0

Answer:

a) Heterogeneous mixture (b) Homogenous mixture (c) Pure substance (d) Pure substance

Explanation:

Homogenous mixtures contains mixture of substances with similar proportions while Heterogenous mixture contains substances with a varying proportion.

You might be interested in
If two atoms have a difference in electronegativity of 2.0, what type of tond do they have?
stellarik [79]

Answer:

Ionic

Explanation:

got it correct on a quiz :)

3 0
3 years ago
Could someone help with this? Much appreciated!
alekssr [168]

Answer:

The 3rd answer down.

Na²O (sodium oxide) will be a base when exposed to water H²O

Explanation:

Sodium Oxide Na²O, will become Sodium Hydroxide after being exposed to water (at 80% I believe).

The oxygen ion in Na²O has 2 extra electrons which makes it highly charged and very attractive to hydrogen ions. The attraction is so strong that when Na²O comes in contact with H²O, the O(-2) strips off a hydrogen from water, forming 2 x OH ions which of course are still strongly basic.

6 0
3 years ago
PLEASE HELP ME! WILL GIVE BRAINLEST! I need this ASAP!
Fofino [41]
1. Al(C₂H₅)₂OCl₃

Al(C₂H₅)₂OCl₃ is made from 5 different elements. They are Al, C, H, O and Cl. Number of atoms in each element can be found as follows.

number of Al atoms = 1
number of C atoms = 2 x 2 = 4
number of H atoms = 5 x 2 = 10
number of O atoms = 1
number of Cl atoms = 3
<span>
Total number of atoms = 1 + 4 + 10 + 1 + 3 = 19

2. </span>BCl₃<span> 

BCl</span>₃ is a simple neutral molecule. It consists of 2 different elements as B and Cl. Total number of atoms is 4. Number of atoms can be calculated as follows.

number of B atoms = 1
number of Cl atoms = 3

Total number of atoms = 1 + 3 = 4<span>

3. </span>H₂O + H⁺

H₂O makes H₃O⁺ (hydronium ion) with H⁺ which is a positive ion. H₃O⁺ consists of two different elements as H and O. Number of atoms are as follows.

number of H atoms = 3
number of O atoms = 1

Total number of atoms = 3 + 1 = 4


7 0
3 years ago
Identify from the following list of molecules and ions which behave as Lewis acids: CO2, NH3, BCl3, Fe3+. (A) CO2 and NH3 (B) NH
Anettt [7]

Answer : The correct option is, (D) CO₂, BCl₃, and Fe³⁺

Explanation :

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

(a) CO_2

It is a Lewis-acid because it can accepts electron pairs.

(b) NH_3

It is not a Lewis-acid because it can not accepts electron pairs but it is a base because it can donates and accept hydrogen ion.

(c) BCl_3

It is a Lewis-acid because it can accepts electron pairs because it has an incomplete octet and an empty 2p orbital.

(d) Fe^{3+}

It is a Lewis-acid because it can accepts electron pairs.

Hence, the ions which behave as Lewis acids are, CO₂, BCl₃, and Fe³⁺

6 0
3 years ago
Salt is an element or a compound?
Afina-wow [57]

Answer:

Salt is a compound

Explanation:

Pure salt consists of the elements sodium and chlorine. Its chemical name is sodium chloride and its formula is NaCl. ... Table salt is a chemically simple combination of two components, sodium and chlorine.

4 0
2 years ago
Other questions:
  • The amount of energy available to do work after a chemical reaction has occurred is called
    8·1 answer
  • In your own words, describe what is the role or function of the neutron in the atom's nucleus
    15·2 answers
  • In which biome would you most likely find plants that grow far apart from one another, with narrow leaves and shallow roots? Why
    6·2 answers
  • Think about something very important to you that you would like to accomplish 10 years from now. Write a short-term, medium-term
    13·1 answer
  • The temperature at which a liquid becomes a solid is the:
    10·1 answer
  • • What type of rock is used for radiometric dating, Why?
    14·1 answer
  • 4. Plants use energy from sunlight, water, and carbon dioxide to produce sugar. Which structure is found only in plant cells and
    10·1 answer
  • contrast copy and fill in this graphic organizer to contrast how different elements, isotopes, and ions are produced
    7·1 answer
  • If a Kleenex box has a length of 8cm, width or 2cm, and a height of 4cm what is the volume of the Kleenex box?
    10·1 answer
  • You have 300,000 atoms of a radioactive substance. After 3 half-lives have past, how many atoms remain? Remember that you cannot
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!