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
katen-ka-za [31]
3 years ago
11

Question 26 (2 points)

Chemistry
1 answer:
Montano1993 [528]3 years ago
4 0
Working on it now so yeaaaa
You might be interested in
The chemical equation below shows the formation of aluminum oxide (Al2O3) from aluminum (Al) and oxygen (O2). 4Al 3O2 Right arro
Andrew [12]

Formation reaction is the formation of 1 mole of product from the constituents of the reactant molecules. The mass of oxygen that must react is 182 gm.

<h3>What is mass and molar mass?</h3>

Mass of the substance is the weight while the molar mass of the substance is the addition of the atomic mass of the individual mass of the constituent atoms of the compound or the molecule.

The chemical reaction can be shown as:

\rm 4 Al + 3 O_{2} \rightarrow 2 Al_{2}O_{3}

From the reaction, it can be said that 3 moles of oxygen are required to produce 2 moles of aluminium oxide, so x moles of oxygen will be required to produce 3.80 moles of aluminium oxide.

Solving for x:

\begin{aligned}\rm 2x &= 3.80\times 3\\\\\rm x &= \dfrac{11.4}{2}\\\\&= 5.7\;\rm mol\end{aligned}

If 1 mol of oxygen is 32 gm then 5.7 moles of oxygen will be 182.4 gm.

Therefore, option D. 182 gm is the mass of oxygen required.

Learn more about moles and molar mass here:

brainly.com/question/893495

3 0
3 years ago
A combination of substances that are not<br> chemically combined is called a
Kitty [74]

Answer:

A mixture is a combination of two or more pure substances that are not chemically combined. Mixtures are held together by physical forces and therefore can be separated physically.

5 0
3 years ago
Can someone please give me a simple equation on the mass of an isotope
frutty [35]
Mass 1 + %abundance of first isotope + Mass 2 + %abundance of second isotope
/ 100
This is RAM.
5 0
3 years ago
What volume (in L) will a 32 g sample of butane gas, C4H10(g), occupy at a temperature of 45.0 oC and a pressure of 728 mm Hg?
larisa86 [58]

Answer:

15.0 L

Explanation:

To find the volume, you need to use the Ideal Gas Law:

PV = nRT

In this equation,

-----> P = pressure (mmHg)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas constant (62.36 L*mmHg/mol*K)

-----> T = temperature (K)

To calculate the volume, you need to (1) convert grams C₄H₁₀ to moles (via the molar mass), then (2) convert the temperature from Celsius to Kelvin, and then (3) calculate the volume (via the Ideal Gas Law).

Molar Mass (C₄H₁₀): 4(12.011 g/mol) + 10(1.008 g/mol)

Molar Mass (C₄H₁₀): 58.124 g/mol

32 grams C₄H₁₀              1 moles
-------------------------  x  -----------------------  = 0.551 moles C₄H₁₀
                                    58.124 grams

P = 728 mmHg                      R = 62.36 L*mmHg/mol*K

V = ? L                                    T = 45.0 °C + 273.15 = 318.15 K

n = 0.551 moles

PV = nRT

(728 mmHg)V = (0.551 moles)(62.36 L*mmHg/mol*K)(318.15 K)

(728 mmHg)V = 10922.7632

V = 15.0 L

6 0
2 years ago
Is D correct? Please helpppppppppppp
coldgirl [10]

the correct anwser is B

Antibiotics are medications used to fight infections caused by bacteria.

4 0
3 years ago
Read 2 more answers
Other questions:
  • What assumption is made concerning the reaction of magnesium with 2 m hcl?
    5·1 answer
  • Which of the following best describes what a scientist does
    11·2 answers
  • 18 g of copper is mixed with silver nitrate in water. How much copper ll nitrate will formed?
    7·1 answer
  • Initial temperature of metal = {
    12·2 answers
  • A substance that is ______ will NOT dissolve in a solvent. A) freezing B) insoluble C) evaporating D) soluble
    7·2 answers
  • Given the reaction below which of the following best describes the energy changes in this reaction?
    14·1 answer
  • I need c and d pleaseeee!!
    7·1 answer
  • Hich formula can be used to calculate the molar mass of hydrogen peroxide (H2O2)? (5 points)
    7·2 answers
  • Which is the correct dissociation equation for aluminum nitrate?
    9·1 answer
  • Identify the products of the reaction between mercury(ii) sulfate and titanium(ii) nitrate.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!