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
Gennadij [26K]
4 years ago
5

How many grams of oxygen are produced when 7.65 moles of water is decomposed

Chemistry
1 answer:
maksim [4K]4 years ago
6 0

Answer:

The answer to your question is 122.4 g of O₂

Explanation:

Data

mass of O₂ = ?

moles of H₂O = 7.65

Process

1.- Write the balanced chemical reaction

                   2H₂O  ⇒  2H₂  +  O₂

2.- Convert the moles of H₂O to grams

molar mass of H₂O = 2 + 16 = 18 g

                    18 g of H₂O ---------------- 1 mol

                      x                ----------------- 7.65 moles

                      x = (7.65 x 18) / 1

                      x = 137.7 g H₂O

3.- Calculate the grams of O₂

                 36 g of H₂O -------------------- 32 g of O₂

              137.7 g of H₂O -------------------  x

                        x = (32 x 137.7) / 36

                       x = 122.4 g of O₂

 

You might be interested in
The specific gravity of water is 1.0. True False
Zielflug [23.3K]
The specific gravity of water is 1.0 True 
5 0
3 years ago
An organic compound that contains only carbon and hydrogen and at least one carbon-carbon triple bond is classified as an ____.
Serggg [28]
Alkyne is used for triple bonds
5 0
3 years ago
A compound that is composed of only carbon and hydrogen contains 85.7% c and 14.3% h by mass. what is the empirical formula of t
Anna35 [415]
The empirical formula is CH2
8 0
3 years ago
An unknown metal forms a soluble compound, M(NO3)2, which then undergoes electrolysis with an applied current of 2.50 amperes. I
frozen [14]

Answer:

The metal is the cathode

The metal is palladium

At the other cathode, the reaction going on is

M(s) ------> M2^+(aq) + 2e

Chlorine can spontaneously react with Pd converting it to Pd^2+

The molar mass of the metal is 106.4 g of M

Explanation:

Given the formula of the compound, M^2+ ion is involved. The equation of the reaction is;

M^2+(aq) + 2e -------------> M(s)

The number of moles of electrons transferred = 2 moles

1 mole of electron = 96500C

And Q= It

Where I= current

t= time taken in seconds

Now;

x g of the metal (its molar mass) is deposited by 2×96500 C

1.87 g of the metal is deposited by (2.50× 22.6×60) C

x = 1.87 × 2×96500/ 2.50 × 22.6 × 60

x= 360910/3390

x= 106.4 g of M

The metal is the cathode

The metal is palladium

At the other cathode, the reaction going on is

M(s) ------> M2^+(aq) + 2e

Chlorine can spontaneously react with Pd converting it to Pd^2+

7 0
4 years ago
Do the following statement describe physical or chemical property!
alexandr402 [8]
This is a chemical property due to radioactivity being a chemical characteristic of uranium. This fact describes its chemical structure.
8 0
2 years ago
Other questions:
  • turning on a tv is an example of _______ energy being transformed into_________ energy and________energy
    8·1 answer
  • The equation NaCI + AgF -> NaF + AgCI is an example of what type of reaction
    6·1 answer
  • A 1.0 M H2S solution has a pH = 3.75 at equilibrium. What is the value of Ka?
    7·2 answers
  • How many grams of NaOH are produced from 1.20 x 10^2 of Na2O
    6·1 answer
  • A substance that can be broken down into simpler subtend only by a chemical change is aa. homogenous mixtureb. heterogeneous mix
    14·1 answer
  • Describe two observations you might make when a chemical change occurs
    14·1 answer
  • How many grams of P2O3 are needed to react with 248 g of NaOH ?
    11·1 answer
  • How many moles are present in 100 grams of potassium?
    5·1 answer
  • 3.25 x 10+8 nm2 divide by 6.5 x 10+6 nm =
    10·1 answer
  • Please someone help WHATS the answer
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!