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
AVprozaik [17]
2 years ago
14

How many moles of oxygen are required to make 4 moles of water?​

Chemistry
2 answers:
kakasveta [241]2 years ago
8 0

Answer:

2 moles of oxygen

Explanation:

Basic Equation (given) :

2H₂ (g) + O₂ ⇒ 2H₂O (g)

  • From this, we understand for every 2 moles of water, 1 mole of oxygen is needed

Taking the number of moles of oxygen and water in proportion :

  • 1 : 2
  • 1 × 2 : 2 × 2
  • 2 : 4

Therefore, 2 moles of oxygen are required to make 4 moles of water.

frozen [14]2 years ago
6 0

\textsf{\qquad\qquad\huge\underline{{\sf Answer}}}

As per the given equation, we can infer that :

For getting 2 moles mole of water, 1 mole of oxygen gas was required. so to get 4 moles of water we need :

We just have to multiply the whole reaction by 2 on both sides, in order to get 4 moles of H2O on product side.

\qquad \qquad \rm4 \: H_2 + 2 \: O_2  \rightarrow4 \: H_2O

therefore, we need

\qquad \sf  \dashrightarrow \: 2 \times 1 = 2 \: moles \:  \: oxygen \: gas

You might be interested in
Which particles have the same mass?
Mazyrski [523]
It would be A. proton and electron
6 0
3 years ago
How many bonds does CIO3- have, the chlorate ion have?
chubhunter [2.5K]
2 ions in that solution.
7 0
3 years ago
C. Another radioisotope of americium exists which has an atomic mass of 242.
ollegr [7]

Answer:

1 g  

Explanation:

The half-life of Am-242 (16 h) is the time it takes for half of it to disappear.

We can make a table of the mass left after each half-life.

\begin{array}{cccc}\textbf{No. of} & & \textbf{Percent} & \textbf{Mass}\\\textbf{Half-lives} & \textbf{Time/h} & \textbf{Remaining} & \textbf{Remaining/g}\\0& 0 & 100 & 8\\1 & 16 &50 & 4\\2 & 32 & 25 & 2\\3 & 48 & 12.5 & 1\\4 & 64 & 6.25 & 0.5\\\end{array}

The mass remaining after 48 h  is 1 g.

7 0
3 years ago
Plutonium-240 decays according to the function \[Q(t)=Q _{o}e ^{-kt}\] where Q represents the quantity remaining after t years a
marishachu [46]
To answer the question above, substitute the given values to the given equation,
                                   Q(t) = Q x e^-kt
  
                          12 grams = (36 grams) x e^(-0.00011)(t)

Solving for t gives t = 9,987.38 years or approximately equal to 9,990 years. Thus, the answer is letter C.












4 0
3 years ago
Read 2 more answers
Its B i already got it
Rina8888 [55]

Explanation:

With all the scaling up and design improvements, the flight range of the R-7 increased to an intercontinental distance from 330 kilometers for the V-2. The R-7 ended up looking oversized even next to its American contemporaries -- the Atlas and Titan ballistic missiles.

4 0
2 years ago
Other questions:
  • 2.1 g of a hydrocarbon fuel is burned in a calorimeter that contains 280 grams of water initially at 25.00◦C. After the combusti
    10·1 answer
  • Describe what Darwin observed during his voyage on the HMS Beagle
    5·2 answers
  • How many atoms are in 0.75 grams of titanium?
    8·2 answers
  • Which substance can not be broken down by a chemical change?(1) ammonia (2) methanol (3) propane (4) phosphorous
    5·2 answers
  • If a metal donates or loses an electron it becomes a..<br> A. Ionic<br> B. Covalent<br> C. Metallic
    6·2 answers
  • What can the flow of electrons be easily compared to?
    5·1 answer
  • Who can do my chemistry? It's due tonight, please! It’s about solubility interactive
    10·1 answer
  • All my questions are being "Deleted" for violating community guidelines by the same bots that scam you with the file. I swear- i
    14·1 answer
  • According to the diagram below, which of the following factors keeps Earth in motion around the sun?
    14·1 answer
  • Try the same filtering method with the salt water. What happened? Taste the
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!