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
kogti [31]
3 years ago
6

Diborane (B2H6) is a gas at room temperature that forms explosive mixtures with air. It reacts with oxygen according to the foll

owing equation (which may or may not be balanced): _____ B2H6 (g) + _____ O2 (g) → _____ B2O3 (s) + _____ H2O (l) How many grams of O2 (molar mass 32.00 g/mol) will react with 14.67 grams of diborane (molar mass 27.67 g/mol). Your answer must be expressed to the correct number of significant figures, and with the correct unit.
Chemistry
1 answer:
stiv31 [10]3 years ago
3 0

Answer: 50.91 grams

Explanation:

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} B_2H_6=\frac{14.67g}{27.67g/mol}=0.5302moles

The balanced chemical equation is :

B_2H_6(g)+3O_2(g)\rightarrow B_2O_3(s)+3H_2O(l)

According to stoichiometry :

1 mole of B_2H_6 require  = 3 moles of O_2

Thus 0.5302 moles of B_2H_6 will require =\frac{3}{1}\times 0.5302=1.591moles of O_2

Mass of O_2=moles\times {\text {Molar mass}}=1.591moles\times 32.00g/mol=50.91g

Thus 50.91 grams of O_2 reacts with 14.67 g of diborane

You might be interested in
Which of these terms refers to matter that could be heterogeneous?
Burka [1]
Mixture. Mixtures can be both heterogeneous and homogeneous. Heterogeneous mixtures are mixtures that don't have a fixed composition, meaning that if you take smaller samples from two different parts of a larger sample, the ratios of the substances will differ.
4 0
3 years ago
Read 2 more answers
Which polynomials, given in square inches, could represent the area of a square with whole number side lengths if x is a whole n
erica [24]

<u>Answer:</u> The correct answers are x^2-9\text{ and }x^2-100

<u>Explanation:</u>

To find the polynomials which could represent the are of a square having side x greater than 2, we need to find the value of 'x' for all the given polynomials.

From the given options:

  • 1. x^2-9

x^2=9\\x=\sqrt{9}\\x=3,-3

x = -3 is ignored.

  • 2. x^2-100

x^2=100\\x=\sqrt{100}\\x=\pm10\\x=10,-10

x = -10 is ignored

  • 3. x^2-4x+4

To solve this we use the quadratic formula:

\frac{-b\pm\sqrt{b^2-4ac}}{2a}

Putting values of a, b and c, we get:

x=\frac{-(-4)\pm\sqrt{(-4)^2-4(1)(4)}}{2\times 1}\\x=2,2

As, x comes out to be 2 and is not greater than 2. Hence, this is not considered.

  • 4. x^2+10x+25

Solving for 'x' by splitting the middle term:

\Rightarrow x^2+5x+5x+25\\\Rightarrow x(x+5)+5(x+5)\\x=-5,-5

Hence, this is ignored.

  • 5. x^2+15x+36

Solving for 'x' by splitting the middle term:

\Rightarrow x^2+12x+3x+36\\\Rightarrow x(x+12)+3(x+12)\\x=-12,-3

Hence, this is ignored.

So, the correct polynomials are x^2-9\text{ and }x^2-100

3 0
3 years ago
Read 2 more answers
Which term represents the attraction one atom has for the electrons in a bond with another atom? A. electronegativity B. electri
OleMash [197]
Option a. electronegativity

the measure of the ability of the specified atom to attract electrons in a molecule
7 0
3 years ago
If D+2 would react with E-1, what do you predict the formula to be. A) DE B)D2E C)DE2 D) D2E2
allochka39001 [22]
All you need to do the cross the charges and put it as suffixes. 

D+2 + E-1 ----> DE2

answer is C
5 0
3 years ago
Read 2 more answers
A class of substances known as __________ are used for their medicinal properties.
Misha Larkins [42]

Answer: Alkaloids

A class of substances known as alkaloids are used for their medicinal properties.

Explanation:

Alkaloids are small but complex organic substances with at least one nitrogen atom in its ring structure. Hence, they have strong basic properties, and are produced in naturally by some plants.

Examples of alkaloids and their medicinal properties are as follows:

- caffeine, used in certain drug and drinks to stimulate the nervous system

- morphine, used to reduce pain and induce sleep in humans.

- cocaine, nicotine etc

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the specific heat capacity of the metal? use sig figs here. Make sure to choose the correct initial temperature and sole
    6·1 answer
  • Consider the following reaction where Kc = 77.5 at 600 K: CO(g) + Cl2(g) COCl2(g) A reaction mixture was found to contain 4.24×1
    14·1 answer
  • Carbon dioxide and water can combine to form glucose, water and oxygen. What is required for that process to occur?
    7·1 answer
  • 1) β-galactosidase is a unique enzyme, in that it can have multiple substrates. What are some other substrates for β-galactosida
    9·1 answer
  • How many moles of hydrogen gas are needed to produce 20 grams of hydrochloric acid (HCl)?
    5·1 answer
  • what is the product of sodium sulphate and magnesium phosphite if they were combined? please give the chemical formula not its n
    12·1 answer
  • Why are there different types of matter.
    14·1 answer
  • Can a solid crystal be composed of molecules?
    6·2 answers
  • The dark areas on the map show the distribution of coral reefs around the world. What explanation best
    7·1 answer
  • Which image best represents a solution of distilled water at pH = 7?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!