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
UkoKoshka [18]
2 years ago
5

Is a compound considered a pure substance yes or no?

Chemistry
1 answer:
Sergeu [11.5K]2 years ago
4 0
A pure substance consists only of one element or one mixture

There is no physical change that can separate the compounds into more than one substance

This makes a compound a pure substance
You might be interested in
What is the number of moles of glucose C6H12O6 in a 134g sample?
Shkiper50 [21]
The question is simply asking to convert from units of mass to units of moles. To do this, a conversion factor is needed. For this case, we use the molar mass of glucose which is equal to 180.18 g/mol. We do as follows:

134 g C6H12O6 ( 1 mol / 180.18 g ) = 0.744 mol <span>C6H12O6</span>
5 0
4 years ago
Elements placed in the same group have similar chemical properties. Which one of the following has different chemical property?
Westkost [7]

Answer:

Na has the different chemical property

3 0
3 years ago
1. How many valence electrons are in an atom of phosphorus? (atomic number 15)
Alinara [238K]
1. D. 5
2. B. 2
3. A. fluroine
Hope this helps you!!
Have a wonderful day!
7 0
4 years ago
What mass (g) of magnesium nitride (Mg3N2) can be made from the reaction of 1.22 g of magnesium with excess nitrogen? __Mg + __N
Citrus2011 [14]
<h3>Answer:</h3>

1.69 g Mg₃N₂

<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> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table

<u>Stoichiometry</u>

  • Using Dimensional Analysis
  • Reactions RxN
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Unbalanced] Mg + N₂ → Mg₃N₂

[RxN - Balanced] 3Mg + N₂ → Mg₃N₂

[Given] 1.22 g Mg

[Solve] grams Mg₃N₂

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

[RxN] 3 mol Mg → Mg₃N₂

[PT] Molar Mass of Mg - 24.31 g/mol

[PT] Molar Mass of N - 14.01 g/mol

Molar Mass of Mg₃N₂ - 3(24.31) + 2(14.01) = 100.95 g/mol

<u>Step 3: Stoich</u>

  1. [DA] Set up:                                                                                                      \displaystyle 1.22 \ g \ Mg(\frac{1 \ mol \ Mg}{24.31 \ g \ Mg})(\frac{1 \ mol \ Mg_3N_2}{3 \ mol \ Mg})(\frac{100.95 \ g \ Mg_3N_2}{1 \ mol\ Mg_3N_2})
  2. [DA] Multiply/Divide [Cancel out units]:                                                         \displaystyle 1.68873 \ g \ Mg_3N_2

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

1.68873 g Mg₃N₂ ≈ 1.69 g Mg₃N₂

8 0
3 years ago
7. What is the unit for Mass?<br> *<br> 1 poin<br> Kg<br> S<br> N<br> m/s
olga_2 [115]

Answer:

kilograms is the unit for mass

6 0
3 years ago
Other questions:
  • the point on earths surface directly above where an earthquake happen is called? a.)focus b.)epicenter c.)hypocenter d.)locus​
    12·2 answers
  • Given the two reactions PbCl2(aq)⇌Pb2+(aq)+2Cl−(aq), K3 = 1.85×10−10, and AgCl(aq)⇌Ag+(aq)+Cl−(aq), K4 = 1.17×10−4, what is the
    13·1 answer
  • Burning your hand when accidentally touching a hot plate is an example of which heat transfer? a.Conduction b.Convection c.Radia
    9·2 answers
  • What is a substance that decreases the rate of a chemical reaction called? (5 points)
    12·1 answer
  • On the cooling curve below, between points Dand Ethe substance is changing from
    5·1 answer
  • Potential energy is...
    7·1 answer
  • This system is at equilibrium, what change would shift the equilibrium to the right?
    6·1 answer
  • What is the average atomic mass of an element that has 3 isotopes with the data below?
    6·1 answer
  • The particle diagram shown above represents the dissolution of CuCl(s) assuming an equilibrium concentration for Cu+ ions of abo
    15·1 answer
  • A 1. 00 ml sample of an unknown gas effuses in 11. 1 min. an equal volume of h2 in the same apparatus under the same conditions
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!