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
larisa [96]
3 years ago
7

Equal volumes of H2 and O2 are placed in a balloon and then ignited. Assuming that the reaction goes to completion, which gas wi

ll remain in excess? 2H2 + O2 → 2H2O
Chemistry
1 answer:
Sonbull [250]3 years ago
7 0

Answer: Oxygen

Explanation:

2H_2+O_2\rightarrow 2H_2O

As seen from the balanced equation:

2 moles of hydrogen combine with 1 mole of oxygen or 1 mole of hydrogen combine with 1/2 mole of oxygen.

According to Avogadro's law, equal volumes of gases contain equal number of molecules and hence equal number of moles.

Thus if x moles of both gases are present, x moles of hydrogen will combine with \frac{x}{2} moles of oxygen and  x-\frac{x}{2}=\frac{x}{2} moles of oxygen will be left used and will be in excess.

You might be interested in
Please help... giving a lot of points and awarding brainliest.
NNADVOKAT [17]
Theoretical Yield of H2SO3: 31.2 g
Percent Yield: 67.4%

Theoretical Yield of C2H6: 6.50
Percent Yield: 88.7%

Theoretical Yield of HF: 3.84
Percent Yield: 71.4%
8 0
3 years ago
Is the climate change that Greenland is experiencing and will continue to experience a good thing or bad thing for Greenland and
KATRIN_1 [288]

Answer:

bad thing.

Explanation:

most of Greenland is an icy island with the only main population on the west coast.

Although this would probably open up more land for use; the rising sea levels are a much bigger threat comparatively with the perks of warmer climate.

8 0
3 years ago
Read 2 more answers
Be sure to answer all parts. Carbon dioxide (CO2) is the gas that is mainly responsible for global warming (the greenhouse effec
Elena L [17]

Answer:

1.60x10⁶ billions of g of CO₂

Explanation:

Let's calculate the production of CO₂ by a single human in a day. The molar mass of glucose is 180.156 g/mol and CO₂ is 44.01 g/mol. By the stoichiometry of the reaction:

1 mol of C₆H₁₂O₆ -------------------------- 6 moles of CO₂

Transforming for mass multiplying the number of moles by the molar mass:

180.156 g of C₆H₁₂O₆ ----------------- 264.06 g of CO₂

4.59x10² g ---------------- x

By a simple direct three rule:

180.156x = 121203.54

x = 672.77 g of CO₂ per day per human

So, in a year, 6.50 billion of human produce:

672.77 * 365 * 6.50 billion = 1.60x10⁶ billions of g of CO₂

5 0
3 years ago
A 100 watt bulb emits monochromatic light of wavelength 400 nm. Calculate the number of photons emitted per second by the bulb.
umka21 [38]

Answer:

f = 7.5 E14 s-1

Explanation:

energy emitted by photon:

  • E = h.c / λ.......(1)
  • E = h.f......(2) Planck-Einstein

∴ λ = (400nm)(m/1 E9 nm) = 4.00 E-7 m

∴ h ( Planck's constant) = 6.626070150 E-34 J.s

∴ c (velocity of light) = 3.00 E8 m/s

∴ f (frequency): photon/s

If (1) = (2):

⇒ f = c / λ = E / h

⇒ f = (3.0 E8 m/s) / ( 4.00 E-7 m) = 7.5 E14 s-1

4 0
3 years ago
What states can electrons exist in?
balandron [24]

Answer:

they can exist in B electron clouds or energy levels

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Which process moves molecules and has these traits?
    11·2 answers
  • What is the atmospheres in order from earth
    9·1 answer
  • Volume of a cone is 200.96 what is the height of the cone
    11·1 answer
  • Products of MnO + CL2
    12·1 answer
  • ( HELP) The following system is at equilibrium. In which direction (right or left) will the equilibrium position shift with the
    12·1 answer
  • If 16.00 g of O₂ reacts with 80.00 g NO, how many grams of NO₂ are produced? (enter only the value, round to whole number)
    10·1 answer
  • Why is electrical conductivity a resourceful property of metals like copper, silver, and aluminum?
    8·1 answer
  • Hi if u see this help me please
    12·2 answers
  • Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation:
    12·2 answers
  • Plz help I’m getting timed
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!