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
serg [7]
3 years ago
12

If 5.0 liters of carbon dioxide gas are produced by the reaction below at STP, how many liters of oxygen gas were used in the re

action?
2CO (g) + O2 (g) 2CO2 (g)
10.0 L
7.5 L
5.0 L
2.5 L
Chemistry
1 answer:
svp [43]3 years ago
4 0
At STP

1L O₂ → 2L CO₂
xL O₂ → 5.0L CO₂

x=2.5 L
You might be interested in
A 0.6467-g portion of manganese dioxide was added to an acidic solution in which 1.1701 g of a chloride-containing sample was di
Katen [24]

Answer:

29.39% of AlCl₃ in the sample

Explanation:

Based on the reaction:

MnO₂(s) + 2Cl⁻ + 4H⁺ → Mn²⁺ + Cl₂(g) + 2H₂O

We can find the amount of chloride in solution with the amount of MnO₂ that reacted as follows:

<em>Initial mass MnO₂ = 0.6467g</em>

<em>Recovered mass = 0.3104g</em>

Mass that reacted = 0.6467g - 0.3104g = 0.3363g

<em>Moles MnO₂ -Molar mass: 86.9368g/mol-:</em>

0.3363g * (1mol / 86.9368g) = 3.868x10⁻³ moles MnO₂

<em>Moles Cl⁻:</em>

3.868x10⁻³ moles MnO₂ * (2mol Cl⁻ / 1mol MnO₂) = 7.737x10⁻³ moles Cl⁻

<em>Moles of AlCl₃ and mass -Molar mass AlCl₃: 133.34g/mol-:</em>

7.737x10⁻³ moles Cl⁻ * (1mol AlCl₃ / 3mol Cl⁻) = 2.579x10⁻³ moles AlCl₃

2.579x10⁻³ moles AlCl₃ * (133.34g / mol) =

<em>0.3439g of AlCl₃</em> are present in the sample.

The percent is:

0.3439g of AlCl₃ / 1.1701g * 100 =

<h3>29.39% of AlCl₃ in the sample</h3>

7 0
2 years ago
How much energy is required to heat 40g of water from -7 degrees Celsius to 108 degrees Celsius (Lf= 335,000J/Kg for ice)
solniwko [45]
The   energy  required  to heat  40g  of water  from -7 c  to 108 c is
1541000  joules

     calculation

Q(heat)=  M( mass)  x c(specific heat capacity) xdelta t( change in temperature)

M=  40g=  40/1000= 0.04 Kg
C=  335,000 j/kg/c
delta T   (    108 --7= 115  c)

Q  is therefore   =  0.04 g x  335000 j/kg/c  x 115 c  = 1541,000  joules


6 0
3 years ago
Which scenario ensures that Earth’s global temperature is maintained?
Angelina_Jolie [31]

Answer:

The energy that flows into the Earth system is equal to the energy that flows out of the Earth system.

Explanation:

Because I geussed it right

3 0
3 years ago
Read 2 more answers
The properties of two elements are listed below. Which prediction is supported by the information in the table?
ANEK [815]
K will give up an electron more easily than Br.
3 0
3 years ago
Read 2 more answers
(My losing emote at the top..)
forsale [732]

Answer:

neutral charge

I hope it's helps you

4 0
3 years ago
Read 2 more answers
Other questions:
  • Draw the structures of the starting materials used to synthesize 3-methylbutyl propanoate. (draw the structures in the single sk
    5·1 answer
  • Plz help me and I promise I will make you he brainiest
    8·1 answer
  • What will be the kinetic energy change of the ram of a pile driver when it suddenly undergoes a 10 kJ decrease in potential ener
    5·1 answer
  • Which of the following statements is true? Question 5 options: Chemical reaction rates vary with the conditions of the reaction,
    14·1 answer
  • Liquids can take the shape of their container but their atoms cannot move away from each other enough to always fill the contain
    7·2 answers
  • Two atoms of the same element are most likely to form
    10·1 answer
  • if the force between two charged particles increases,but the distance between them does not change, then:
    12·1 answer
  • How does a hydroelectric power plant convert energy?
    9·2 answers
  • PLEASE HELP ME ANSWER
    12·1 answer
  • Which of the following represents an electron configuration that corresponds to the valence electrons of an element for which th
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!