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
Serggg [28]
3 years ago
5

How many atoms are in 2.5 moles of beryllium atoms?

Chemistry
1 answer:
Irina-Kira [14]3 years ago
8 0
As we know that there are avogadro no. of atoms in 9 g of beryllium.
1 mole of beryllium = 6.02 * 10^23 atoms
so 2.5 mole= 6.02*10^23*2.5 i.e = <span>15.055 × 10^23 atoms </span>
You might be interested in
For each reaction, identify the element that gets reduced and the element that gets oxidized. 2 AgCl + Zn ⟶ 2 Ag + ZnCl 2 2AgCl+
Mnenie [13.5K]

Answer:

Explanation:

Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

Oxidizing agents:

Oxidizing agents oxidize the other elements and itself gets reduced.

Reducing agents:

Reducing agents reduced the other element are it self gets oxidized.

Consider the following reaction:

2AgCl + Zn  → 2Ag + ZnCl₂

In this reaction oxidation state of Zn on left side is 0 while on right side +2 so it gets oxidized and oxidation state of Ag on left side is +1 and on right side 0 so it get reduced.

4NH₃  +  3O₂   →   2N₂ +  6H₂O

In this reaction oxidation state of nitrogen on left side is -3 while on right side 0 so it gets oxidized and oxidation state of oxygen on left side is 0 and on right side -2 so it get reduced.

Fe₂O₃ +  2Al  →   Al₂O₃ +  2Fe

In this reaction oxidation state of iron on left side is +3 while on right side 0 so it gets reduced and oxidation state of Al on left side is 0 and on right side +3 so it get oxidized.

4 0
3 years ago
Why would a plant use the energy and resources to grow a fruit?
Step2247 [10]

Answer:

because a fruit holds the seeds it needs to reproduce and continue living.

3 0
3 years ago
What are the elements in group 3-12 called
Wittaler [7]

Answer:

Transition Metals

Explanation:

The elements in groups 3-12 are called Transition Metals. These groups contain metals that usually form multiple cations. All other groups on the table (1, 2, 13-18) are called Main Group Elements.

5 0
3 years ago
The what system illuminates sell your waist through the lungs skin and kidneys
hichkok12 [17]
The excretory system<span> is responsible for removing the </span>cellular waste through the lungs,skin,and kidneys<span>. </span>
3 0
3 years ago
3. What is the name of the technique used to weigh the unknown liquid in part A of the
Anna [14]

Answer:

The technique is called weighing by difference

7 0
3 years ago
Other questions:
  • 50 mL of 2M H2SO4 react with 75 mL of 2M NaOH. Identify the limiting and excess reactants
    5·1 answer
  • How many moles are in 25.3 g of a sample of potassium nitrate (KNO3)?
    7·1 answer
  • What is AgNO3 + KCI-KNO3+AgCI. What type of reaction does this represent
    6·1 answer
  • What is the name of the high energy compound that cells use directly to fuel other chemical reactions?
    7·1 answer
  • What is the name for 3Na2SO4
    12·2 answers
  • When minerals break along straight lines or flat planes we call that __________.
    15·2 answers
  • What factors trigger the evolution of a species?
    10·2 answers
  • (Physical or chemical)Properties describe matter
    11·1 answer
  • What do water, air and rocks have in common
    10·1 answer
  • How many elements are in this chemical formula? <br> 2(NH4)2SO4
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!