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
Hitman42 [59]
3 years ago
7

How many Mg atoms are presented in 3.00 moles of MgCl2

Chemistry
1 answer:
ella [17]3 years ago
3 0

Answer:

1.81 x 10²⁴ atoms

Explanation:

To find the number of atoms in the given number of moles, we need to understand that every substance contains the Avogadro's number of particles.

More appropriately, a mole of any substance will contain the Avogadro's number of particles which is 6.02 x 10²³ atoms

 So;

           If 1 mole of a substance  = 6.02 x 10²³ atoms;

               3 mole of MgCl₂ will contain 3 x 6.02 x 10²³ = 1.81 x 10²⁴ atoms

You might be interested in
In the reaction CuO(s) + CO2(g) → CuCO3(s), a. CO2 is the Lewis acid and CuCO3 is its conjugate base. b. O2– acts as a Lewis bas
adoni [48]

<u>Answer:</u> The correct answer is Option d.

<u>Explanation:</u>

According to Lewis acid-base concept:

The substance which is donating electron pair is considered as Lewis base and the substance which is accepting electron pair is considered as Lewis acid.

For the given chemical reaction:

CuO(s)+CO_2(g)\rightarrow CuCO_3(s)

CO_2 is accepting electron pair and is getting converted to CO_3^{2-}. Thus, it is considered as Lewis acid.

O^{2-} present in CuO is a Lewis base because it is donating electron pair.

Thus, the correct answer is Option d.

4 0
3 years ago
What is the correct value for Avogadro's number?
nydimaria [60]

Answer: Option A. 6.022 x 10^23

Explanation:

8 0
3 years ago
Elements in the periodic table are listed in order of their -----​
sattari [20]

Answer:

In numerical order left to right, they are arranged by the number of protons in the nucleus of a single atom of each element

4 0
3 years ago
Read 2 more answers
2C 2 H 6 +7O 2 ***&gt;4CO 2 +6H 2 O if 7.0 g of C 2 H 6 react with 18 g of O 2 , how many grams of water will be produced
Alex787 [66]

Answer:

grams H₂O produced = 8.7 grams

Explanation:

Given 2C₂H₆(g) + 7O₂(g) => 4CO₂(g) + 6H₂O(l)

               7g           18g                             ?g

Plan => Convert gms to moles => determine Limiting reactant => solve for moles water => convert moles water to grams water

Moles Reactants

moles C₂H₆ = 7g/30g/mol = 0.233mol

moles O₂ = 18g/32g/mol = 0.563mol

Limiting Reactant => (Test for Limiting Reactant)  Divide mole value by respective coefficient of balanced equation; the smaller number is the limiting reactant.

moles C₂H₆/2 = 0.233/2 = 0.12

moles O₂/7 = 0.08

<u><em>Limiting Reactant is O₂</em></u>

Moles and Grams of H₂O:

Use Limiting Reactant moles (not division value) to calculate moles of H₂O.

moles H₂O = 6/7(moles O₂) = 6/7(0.562) moles H₂O = 0.482 mole H₂O yield

grams H₂O = (0.482mol)(18g·mol⁻¹) = 8.7 grams H₂O

3 0
3 years ago
Ice floats on the surface of water because ice is less dense than liquid water <br> true or false?
allsm [11]

Answer:

yes it is true.

Ice floats on the surface of water because ice is less dense than liquid water

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • What CPT code is reported for a percutaneous needle biopsy of mediastinum?
    13·2 answers
  • What term matches this definition – negatively charged particle in an atom??
    15·1 answer
  • Table salt has the chemical formula NaCl. Table sugar has the chemical formula C12H22011. Which of the following is trueboth com
    14·2 answers
  • What is the percent yield for a process in which 10.4g of CH3OH reacts and 10.1 g of CO2 is formed
    14·1 answer
  • An aluminum ion has a charge of +3, and an oxide has a charge of -2. What would be the product of a reaction between these two e
    9·1 answer
  • Antimony has 2 naturally occurring isotopes. The mass of antimony-121 is 120.904 amu and the mass of antimony-123 is 122.904 amu
    11·1 answer
  • C3H8+5O2 →3CO2+4H20,
    12·1 answer
  • Can you always tell by looking at a substance if it is pure or not? ​
    10·1 answer
  • This bee is doing an important job! It is helping this plant reproduce. How is the bee helping the plant?
    13·1 answer
  • The half-life of I-37 is 8.07 days. If 25 grams are left after 40.35 days, how many grams were in the original sample?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!