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
Aleksandr [31]
3 years ago
12

In the reaction 2 H2 + O2m 2 H20, how

Chemistry
2 answers:
Tresset [83]3 years ago
8 0

Answer:

Option F. 3moles

Explanation:

The equation for the reaction is given below:

2H2 + O2 —> 2H2O

from the equation,

2moles of H2 required 1mole of O2.

Therefore, 6moles of H2 will require = 6/2 = 3moles of O2

grin007 [14]3 years ago
7 0

Answer:F. 3 moles of oxygen.

Explanation: The solution is as follows:

The mole ratio between H2 and O2 is 2:1 so the stoichiometric solution will be:

6 moles H2 x 1 mole O2 / 2 moles H2

= 3 moles O2

You might be interested in
A chemist measures the amount of fluorine gas produced during an experiment. He finds that 482. g of fluorine gas is produced.
nata0808 [166]

Answer: 25.37055324733817mol

Approximately 25.371mol

Explanation: Number of moles of a substance is the mass of that substance containing the same amount of fundamental units, for instance atom in 12.0g of 12°C

Therefore:

Number of moles= mass/ molecular mass

Where mass of fluorine given= 482g

Standard Molecular mass of fluorine= 18.9984032g/mol

Substituting value in equation

Mole= 482g/18.9984032g/mol = 25.37055324733817mol

Approximately : 25.371mol

4 0
3 years ago
What chemical reaction shows photosynthesis
notka56 [123]

Answer:

Chemical equation for photosynthesis

A water + carbon dioxide + sunlight → oxygen + glucose. B carbon + oxygen → carbon dioxide. C hydrogen + oxygen → water.

Explanation:  This same photosynthesis cycle is usually expressed as: 6CO2 + 6H2O + 6O2 + C6H12O6. This implies that the solute, six carbon dioxide molecules plus 6 hydroxyl groups, are translated into something like a sugar molecule or six oxygen molecules, the goods, exploiting light energy absorbed the chlorophyll (implied by arrow).

6 0
3 years ago
How many days have passed if 4.80 mg of calcium-47 decayed to 1.2 mg of calcium-47?
LenaWriter [7]
(1) 36 days is 8 half-life periods,
so 24mg becomes 24mg times (1/2)^8 = 24 mg/256 = 0.094 mg

(2) 9.6/1.2 = 8, which means three half-life periods went by.
At the end of 4.5 days, there were 4.8 mg
At the end of 9.0 days, there were 2.4 mg
At the end of 13.5 days, there were 1.2 mg

(3) The activity is proportional to the amount of radioactive material remaining,
so after two half-life periods, the activity should be 1/4 of what it originally was.
So the initial activity was probably 12.0 Ci
6 0
3 years ago
What is the correct answer based on sig figs for the following 4.2787 x 2.27= 9.712649
kykrilka [37]

Answer:

a that all you need and why you just and use a calculators and what they are for

4 0
3 years ago
How many grams of solid potassium hypochlorite should be added to 2.00 L of a 0.244 M hypochlorous acid solution to prepare a bu
Olin [163]

Answer:

8.2763 g

Explanation:

Considering the Henderson- Hasselbalch equation for the calculation of the pH of the buffer solution as:

pH=pKa+log[base]/[acid]

Where Ka is the dissociation constant of the acid.

Given that the acid dissociation constant = 3.5×10⁻⁸

pKa = - log (Ka) = - log (3.5×10⁻⁸) = 7.46

Given concentration of acid = [acid] = 0.244 M

pH = 6.733

So,

6.733 = 7.46+log[base]/0.244

[Base] = 0.0457 M

Given that Volume = 2 L

So, Moles = Molarity × Volume

Moles = 0.0457 × 2 = 0.0914 moles

Molar mass of potassium hypochlorite = 90.55 g/mol

Mass = Moles × Molar mass = (0.0914 × 90.55) g = <u>8.2763 g</u>

7 0
3 years ago
Other questions:
  • Calculate the pH of 100.0 mL of a 0.150M aqueous solution of HNO3
    7·1 answer
  • Electromagnetic waves that are harmful to living things are
    8·1 answer
  • How does the global positioning system locate objects on Earth
    10·2 answers
  • What frequency does television channel 7 broadcast at?
    8·2 answers
  • Which of the following instrument would you use to see a plant cell?
    8·2 answers
  • PLEASE HELP PLEASE!!ASAP!
    14·1 answer
  • Which two statements describe what happens to the nuclei of atoms during a fusion reaction? O A. Large nuclei break apart into t
    8·2 answers
  • Newton's Law of Gravity says that any the effect of gravity between two objects depends on what two factors?
    11·1 answer
  • The velocity of a wave is the product of the frequency and the
    5·1 answer
  • Which of the following are found outside the nucleus?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!