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
eduard
3 years ago
12

Calculate the number of atoms in 0.25 moles of manganese?

Chemistry
1 answer:
White raven [17]3 years ago
3 0
<h3>Answer:</h3>

1.5 × 10²³ atoms Mn

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Using Dimensional Analysis
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
<h3>Explanation:</h3>

<u>Step 1: Define</u>

0.25 mol Mn

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

  1. Set up:                              \displaystyle 0.25 \ mol \ Mn(\frac{6.022 \cdot 10^{23} \ atoms \ Mn}{1 \ mol \ Mn})
  2. Multiply:                            \displaystyle 1.5055 \cdot 10^{23} \ atoms \ Mn

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 2 sig figs.</em>

1.5055 × 10²³ atoms Mn ≈ 1.5 × 10²³ atoms Mn

You might be interested in
What is Reflection? ​
11Alexandr11 [23.1K]

Answer:Reflection is the bounce back of the rays of light

7 0
3 years ago
Nervous System Freezes the Muscles:controls senses &amp; most body functions .Carries message &amp; information between the brai
Zolol [24]

Controls senses and most body functions .

Carries message and information between the brain & body​

Explanation:

The nervous system helps to control senses, body functions, carries message and information between brain and the body. It consists of the brain, spinal cord and the nerves.

  • Using series of electrical nerve impulses, the nervous system controls the body administration.
  • The brain, spinal cord and nerves directs communications between different parts of the body system.
  • It is divided into two broad categories, the central nervous system which consists of the brain and spinal cord and the peripheral nervous system which is made up the nerves.

Learn more:

neuron brainly.com/question/4662759

nervous system brainly.com/question/8701152

#learnwithBrainly

3 0
3 years ago
In which molecule the attraction between H and the atom to which it is bonded be the greatest
jolli1 [7]
I got the one you got to pick up my car stereo truck in my truck so I’m coming
5 0
4 years ago
Given the molar specific heat cv of a gas at constant volume, you can determine the number of degrees of freedom s that are ener
Ksju [112]
The molar specific heat Cv = R s / 2
70.6 J/mol.K = (8.314 J/mol.K) * s / 2
So the number of degrees of freedom are:
s = 16.98 = 17
8 0
3 years ago
Read 2 more answers
Given the following reaction and data, A + B → Products
natima [27]

Answer:

a. Rate = k×[A]

b. k = 0.213s⁻¹

Explanation:

a. When you are studying the kinetics of a reaction such as:

A + B → Products.

General rate law must be like:

Rate = k×[A]ᵃ[B]ᵇ

You must make experiments change initial concentrations of A and B trying to find k, a and b parameters.

If you see experiments 1 and 3, concentration of A is doubled and the Rate of the reaction is doubled to. That means a = 1

Rate = k×[A]¹[B]ᵇ

In experiment 1 and to the concentration of B change from 1.50M to 2.50M but rate maintains the same. That is only possible if b = 0. (The kinetics of the reaction is indepent to [B]

Rate = k×[A][B]⁰

<h3>Rate = k×[A]</h3>

b. Replacing with values of experiment 1 (You can do the same with experiment 3 obtaining the same) k is:

Rate = k×[A]

0.320M/s = k×[1.50M]

<h3>k = 0.213s⁻¹</h3>

6 0
3 years ago
Other questions:
  • Which group of elements is characterized as having little to no reactivity? Halogens
    14·2 answers
  • A volume of 25.0 mL of nitric acid, HNO3, is titrated with .12 M NaOH. To completely neutralize the acid 10.0 mL of NaOH must be
    15·1 answer
  • In a water molecule, shared electons spend more time around th oxygen atom than the hydrogen atoms. as a result, the oxygen atom
    13·1 answer
  • In the mathematical equation showing that volume (V) divided by temperature (T) remains equal to a constant (k), volume and temp
    13·1 answer
  • Hydrocarbons having the same formula but variations in structure are called isomers.
    9·1 answer
  • you are studying an element that is a gas at room temperature. Is it most likely a metal, nonmetal, or metalloid?
    7·2 answers
  • What is the voltage of the electrochemical cell written as: Cu(s) I Cu?t(aq) Il Mg2+(aq) I Mg(s)? - APEX
    10·1 answer
  • How many grams of sugar must be dissolved in 150 ML of water to make a solution that has a concern traction of .6 g/ml
    13·1 answer
  • Question 1: A measure of the amount of matter in an object
    5·2 answers
  • The predicted yield for a reaction was 10g of product. If the percentage yield for this reaction was 50%, how much product was f
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!