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
artcher [175]
3 years ago
7

Number of metalloids

Chemistry
1 answer:
aleksandr82 [10.1K]3 years ago
4 0

Answer:

There are six elements commonly recognized as metalloids.

Explanation:

You might be interested in
Is grape juice a solution or a mixture
svetlana [45]
Most definitely a mixture because it's usually a mix of puréed grapes,water,and sugar.
3 0
3 years ago
Read 2 more answers
Which one of the following pairs of acids and conjugate bases is incorrectly labeled or incorrectly matched? Acid Conjugate Base
vekshin1

Answer : The incorrect option is, (d) NH_4^+/NH_2^-

Explanation :

According to the Bronsted Lowry concept, Bronsted Lowry-acid is a substance that donates one or more hydrogen ion in a reaction and Bronsted Lowry-base is a substance that accepts one or more hydrogen ion in a reaction.

Or we can say that, conjugate acid is proton donor and conjugate base is proton acceptor.

(a) The equilibrium reaction will be,

HF+H_2O\rightleftharpoons F^-+H_3O^+

In this reaction, HF is an acid that donate a proton or hydrogen to H_2O base and it forms F^- and H_3O^+ are conjugate base and acid respectively.

In this reaction, HF/F^- are act as a conjugate acid-base.

(b) The equilibrium reaction will be,

HClO+H_2O\rightleftharpoons ClO^-+H_3O^+

In this reaction, HClO is an acid that donate a proton or hydrogen to H_2O base and it forms ClO^- and H_3O^+ are conjugate base and acid respectively.

In this reaction, HClO/ClO^- are act as a conjugate acid-base.

(c) The equilibrium reaction will be,

H_2O+H_2O\rightleftharpoons OH^-+H_3O^+

In this reaction, H_2O is an acid that donate a proton or hydrogen to

In this reaction, H_2O/OH^- are act as a conjugate acid-base.

(d) The equilibrium reaction will be,

NH_4^++H_2O\rightleftharpoons NH_3+H_3O^+

In this reaction, NH_4^+ is an acid that donate a proton or hydrogen to H_2O base and it forms NH_3 and H_3O^+ are conjugate base and acid respectively.

In this reaction, NH_4^+/NH_3 are act as a conjugate acid-base.

(e) The equilibrium reaction will be,

H_3O^++H_2O\rightleftharpoons H_2O+H_3O^+

In this reaction, H_3O^+ is an acid that donate a proton or hydrogen to H_2O base and it forms

In this reaction, H_3O^+/H_2O are act as a conjugate acid-base.

From this we conclude that that, NH_4^+/NH_2^- pairs of acids and conjugate bases is incorrectly labeled or incorrectly matched.

Hence, the incorrect option is, (d) NH_4^+/NH_2^-

4 0
3 years ago
Which element’s atoms have the greatest average number of neutrons?
algol [13]

Answer:

not sure but i guess it's Tellurium

6 0
3 years ago
Read 2 more answers
Can somebody plz help answer this science questions (only 1-2 sentences is good thx !
Mrac [35]
I believe it’s because they are trying to find other things that won’t pollute the environment as much, and they are also doing this because we are trying to reduce green house gas. Sorry if i’m wrong :(
8 0
3 years ago
Why do solids maintain a specific shape and volume?
s344n2d4d5 [400]

Answer:

Solids can hold their shape because their molecules are tightly packed together. ... Atoms and molecules in liquids and gases are bouncing and floating around, free to move where they want. The molecules in a solid are stuck in a specific structure or arrangement of atoms.

<em>Hope it helps...</em>

5 0
3 years ago
Other questions:
  • Here is a link(shhhhh)
    10·2 answers
  • A light bulb contains 0.0560 g of argon gas with a pressure of 1.34 atm at 26.0 c. The light bulb is then turned on and, after a
    14·1 answer
  • Your TLC results for ortho-hydroxyacetophenone versus para-hydroxyacteophenone will indicate that one compound is significantly
    5·1 answer
  • The acceleration of a runner who accelerates from 0 m/s to 3 m/s in 12s
    11·1 answer
  • Determine whether a gas sample was composed of hydrogen or oxygen.
    9·1 answer
  • Solid carbon and oxygen gas react to yield carbon dioxide gas. write the following balanced chemical equation. please help
    10·1 answer
  • You are provided with a beaker, wire, two nails, battery, bulb and dilute soultions of HCl, HNO3, alcohol and glucose. How will
    14·1 answer
  • Whats a particle of electormagnetic radiation
    14·1 answer
  • Give three examples of energy traveling in waves
    14·1 answer
  • Could someone please help me with this?<br><br>A) 2.1 cm<br>B) 1.5 cm<br>C) 1.8 cm<br>D) 2.4 cm
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!