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
Sever21 [200]
2 years ago
5

A sample of magnesium is burned in oxygen to form magnesium oxide. What mass of oxygen is consumed if 74.62 g magnesium oxide is

formed from 45.00 g magnesium
Chemistry
1 answer:
lana [24]2 years ago
3 0
74.62 g of magnesium oxide is formed from 45.00 g magnesium so 74.62-45.00= 29.62 g of oxygen is consumed or in other words a new compound is formed in the burning of magnesium in oxygen with a heavier mass than the pure magnesium.
You might be interested in
Not able to be separated by physical means but is chemical what is it
Ray Of Light [21]
My science text book said that it was either diamond or gold.  Gold may not be right, but I am pretty sure diamond is.

Sorry if I got this wrong.
8 0
2 years ago
Saturns day is roughly 10 hours. it takes about 30 years for Saturn to return to the same point in space. How do saturns periods
leva [86]
I think its c but not sure
8 0
3 years ago
How many moles in 2.21 x10E24 atoms of aluminum
lisov135 [29]
<h3>Answer:</h3>

3.67 mol Al

<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>

  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

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

<u>Step 1: Define</u>

2.21 × 10²⁴ atoms Al

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

Avogadro's Number

<u>Step 3: Convert</u>

  1. Set up:                              \displaystyle 2.21 \cdot 10^{24} \ atoms \ Al(\frac{1 \ mol \ Al}{6.022 \cdot 10^{23} \ atoms \ Al})
  2. Divide:                              \displaystyle 3.66988 \ mol \ Al

<u>Step 4: Check</u>

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

3.66988 mol Al ≈ 3.67 mol Al

7 0
2 years ago
Carbon burns in the presence of oxygen to give carbon dioxide. Which chemical equation describes this reaction?
Alex73 [517]
Your answer is B.
Because it says that that carbon burns in presence of oxygen (C+O) which is equal ( => ) to Carbon Dioxide (CO_{2})
3 0
3 years ago
Read 2 more answers
What do you think happens when you add an emulsifier to oil and vinegar?
julsineya [31]
They separate because of different densities.
7 0
2 years ago
Read 2 more answers
Other questions:
  • He partial pressure of oxygen gas in our atmosphere is 0.21 atm. this is the partial pressure at which human lungs have evolved
    12·1 answer
  • How many formula units are in 9.039 moles of sodium chloride
    9·1 answer
  • Iron has a mass of 7.87 g per cubic centimeter of volume, and the mass of an iron atom is 9.27 × 10-26 kg. If you simplify and t
    5·2 answers
  • Only radioactive isotopes are useful for radiometric dating or medical diagnostic exams. Briefly explain why stable isotopes wou
    14·1 answer
  • Does tap water still contain pollutants?
    11·2 answers
  • What happens when you mix two different items (gases or liquids) together when they have different densities?
    15·1 answer
  • g 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid sodium azide (NaN3) in
    6·1 answer
  • At the top of a hill, an athlete on a skateboard has X joules of mechanical energy. How much mechanical energy will she have at
    14·1 answer
  • 11. How much heat is required to raise the temperature of a 25 gram block of wood from
    13·1 answer
  • What are some possible bias in an experiment about how sleep affects mood<br><br> HELP ASAPPPPP
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!