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
artcher [175]
3 years ago
11

Calculate the number of moles in the 2.1-L volume of air in the lungs of the average person. Note that the air is at 37.0ºC (bod

y temperature). Use standard atmospheric pressure.
Chemistry
1 answer:
adelina 88 [10]3 years ago
7 0
Answer: 0.0826mol

PV=nRT
n=PV/RT
n=(1atm)(2.1L)/(310K)(0.082057L*atm/mol*K)=0.0826mol
You might be interested in
How many protons electrons and neutrons does the following isotopes contain 1H+
Rus_ich [418]

Answer: 1 proton, 0 electron and 1 neutron are present in 1 H⁺ isotope.

8 0
3 years ago
a molecule of two nitrogen atoms and four oxygen atoms what is the molecule formula for this compound
kiruha [24]
The formula would be N2O4
6 0
3 years ago
Read 2 more answers
Write a balanced equation for the combination reaction described, using the smallest possible integer coefficients. When diphosp
WITCHER [35]

Answer:

P₂O₅ + 3H₂O => 2H₃PO₄

Explanation:

Nothing to explain.

6 0
3 years ago
Consider the following reaction at equilibrium. 2CO2 (g) 2CO (g) + O2 (g) H° = -514 kJ Le Châtelier's principle predicts that th
tiny-mole [99]

Answer:

C. at low temperature and low pressure.

Explanation:

  • <em>Le Châtelier's principle </em><em>states that when there is an dynamic equilibrium, and this equilibrium is disturbed by an external factor, the equilibrium will be shifted in the direction that can cancel the effect of the external factor to reattain the equilibrium.</em>

<em />

  • For the reaction:

<em>2CO₂(g) ⇄ 2CO(g) + O₂(g), ΔH = -514 kJ.</em>

<em></em>

<em><u>Effect of pressure:</u></em>

  • When there is an increase in pressure, the equilibrium will shift towards the side with fewer moles of gas of the reaction. And when there is a decrease in pressure, the equilibrium will shift towards the side with more moles of gas of the reaction.
  • The reactants side (left) has 2.0 moles of gases and the products side (right) has 3.0 moles of gases.

<em>So, decreasing the pressure will shift the reaction to the side with higher no. of moles of gas (right side, products), </em><em>so the equilibrium partial pressure of CO (g) can be maximized at low pressure.</em>

<em></em>

<u><em>Effect of temperature:</em></u>

  • The reaction is exothermic because the sign of ΔH is (negative).
  • So, we can write the reaction as:

<em>2CO₂(g) ⇄ 2CO(g) + O₂(g) + heat.</em>

  • Decreasing the temperature will decrease the concentration of the products side, so the reaction will be shifted to the right side to suppress the decrease in the temperature, <em>so the equilibrium partial pressure of CO (g) can be maximized at low temperature.</em>

<em></em>

  • So, the right choice is:

<em>C. at low temperature and low pressure.</em>

<em></em>

7 0
3 years ago
Select the substance that is thought to be partially responsible for depleting the concentration of ozone in the stratosphere. s
gogolik [260]

Answer:

cfcl3

Explanation:

When the cfcl3 in the atmosphere is hit by UV rays from the sun, it decomposes to Cl atoms. These Cl atoms then react with the ozone producing O2 and ClO. The ClO bombard with O atoms splitting the ClO up and the free Cl atom again bonds to another O3 molecule hence reducing it. One ClO can reduce several O3 molecules (up to 100,000) creating an ozone hole.

2Cl + O3 → 2ClO + 2O2

2ClO + 2O → 2Cl + 2O2

6 0
3 years ago
Other questions:
  • Fill in the blank for these q’s
    15·2 answers
  • Chemical compounds secreted by mammals and insects to communicate sexual readiness are called
    13·1 answer
  • ¿Cuál(es) de las siguientes propiedades aumentan a más Z en un grupo?
    5·1 answer
  • Coal can be converted to methane gas by a process called coal gasification. The equation for the reaction is the following: 2 C
    12·1 answer
  • Choose all the answers that apply.
    13·2 answers
  • BRAINLIESTTT ASAP!!! PLEASE HELP ME :)
    14·1 answer
  • What mass of Na2SO4is needed to make 2.5 L of 2.0 Msolution? (Na = 23 g; S = 32 g; O = 16 g)
    13·1 answer
  • Please help!!!!
    5·1 answer
  • PLeaseee ITS Timedddd + BrainlIESTT
    15·1 answer
  • Swimming pool structures and structural _____ [680.26(B)(1) and (B)(2)] shall not be used as a grounding electrode.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!