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
ale4655 [162]
3 years ago
14

How many grams of water can be formed from the reaction of 8.76 grams of H2 with 10.5 liters of O2 (at STP) according to the bal

anced equation: 2 H2 + O2 --> 2 H2O Express your answer to 3 sig figs. Do NOT include units!
Chemistry
1 answer:
Kisachek [45]3 years ago
8 0

Answer:

16.9g of H₂O can be formed

Explanation:

Based on the chemical reaction, 2 moles of H₂ react per mole of O₂. To anser this question we must find limiting reactant converting the mass and volume of each reactant to moles:

<em>Moles H₂ -Molar mass: 2.016g/mol-:</em>

8.76g * (1mol / 2.016g) = 4.345 moles

<em>Moles O₂:</em>

PV = nRT

PV/RT = n

P = 1atm at STP

V = 10.5L

R = 0.082atmL/molK

T = 273.15K at STP

n = 1atm*10.5L / 0.082atmL/molK*273.15K

n = 0.469 moles of oxygen

For a complete reaction of 4.345 moles moles of hydrogen are required:

4.345 moles H2 * (1mol O2 / 2mol H2) = 2.173 moles of O2 are required. As there are just 0.469 moles, Oxygen is limiting reactant

Now, 1 mole of O2 produce 2 moles of H2O. 0.469 moles will produce:

0.469 moles O₂ * (2 moles H₂O / 1mol O₂) = 0.938 moles H₂O.

The mass is -Molar mas H₂O = 18.01g/mol-:

0.938 moles * (18.01g/mol) =

<h3>16.9g of H₂O can be formed</h3>
You might be interested in
Where do you place the symbols that represent the state of matter in an equation?
nexus9112 [7]
Subscript in a pair of brackets
5 0
3 years ago
7. What are the coefficients when the equation below is balanced?
gogolik [260]

Answer:

A

Explanation:

8 0
3 years ago
Read 2 more answers
Is density a physical property that can be used to identify matter
Ganezh [65]
Yes. density is a physical property that can be used to identify matter
5 0
3 years ago
6.0 g of copper was heated from 20 degree c to 90 degree c . How much energy was used to heat cu?
Darina [25.2K]
Copper heat capacity would be <span>0.385J/C*gram which means it needs 0.385 Joule of energy to increase 1 gram of copper temperature by 1 Celcius. The calculation would be:
energy= heat capacity *mass * temperature difference
energy= </span>0.385J/C*gram * 6g * (90-20)
<span>energy= 161.7J
 </span>
4 0
3 years ago
Locate Lithium and oxygen on the periodic table. Briefly explain how these elements might combine to form a compound.
Mars2501 [29]
<span>Lithium atoms have one valence electron, where as oxygen atoms have six. Lithium atoms tend to give up their single valence electrons, and oxygen tends to gain two valence electrons from other atoms, like lithium. They do this so they will have filled valence shells.  hope this answers your question :)</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • Choose all the answers that apply.
    7·1 answer
  • Sodium hydrogen carbonate NaHCO3, also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Ac
    11·1 answer
  • A sample of marble has a volume of 8 cm3 and a density of 2.75 g/cm3. What is its mass?
    9·2 answers
  • What would be the concentration of a solution resulting when you dissolve 4.725g of nacl (molar mass = 58.45) in water to make a
    10·1 answer
  • All the molecules of a substance possess the "average kinetic energy" value.
    12·1 answer
  • How many grams of nickel (+2) are required to replace all of the silver when 15.55 grams of AgNO3 are present?
    15·1 answer
  • In experiments, variation is not present.<br> O True<br> O False
    7·1 answer
  • M= 2 kg, a = 2 m/s^2. <br><br> Find F
    13·1 answer
  • 2. (05.02 MC)
    12·1 answer
  • A plot of the maxwell distribution of speeds for the same sample of gas at different temperatures shows that.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!