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
taurus [48]
1 year ago
15

A sample of neon gas in a bulb is at 149.05 °C and 349.84 kPa. If the pressure drops

Chemistry
1 answer:
KonstantinChe [14]1 year ago
6 0

The new temperature (in °C) of the gas, given the data is –148.20 °C

<h3>Data obtained from the question </h3>
  • Initial temperature (T₁) = 149.05 °C = 149.05 + 273 = 422.05 K
  • Initial pressure (P₁) = 349.84 KPa
  • Volume = constant
  • New pressure (P₂) = 103.45 KPa
  • New temperature (T₂) =?

<h3>How to determine the new temperature </h3>

The new temperature of the gas can be obtained by using the combined gas equation as illustrated below:

P₁V₁ / T₁ = P₂V₂ / T₂

Since the volume is constant, we have:

P₁ / T₁ = P₂ / T₂

349.84 / 422.05 = 103.45 / T₂

Cross multiply

349.84 × T₂ = 103.45 × 422.05

Divide both side by 349.84

T₂ = (103.45 × 422.05) / 349.84

T₂ = 124.80 K

Subtract 273 from 124.80 K to express in degree celsius

T₂ = 124.80 – 273

T₂ = –148.20 °C

Learn more about gas laws:

brainly.com/question/6844441

#SPJ1

You might be interested in
HELP ME PLEASE!!!!
liq [111]

Answer:

1.D

2.A

3.C

4.A

Explanation:

6 0
3 years ago
Read 2 more answers
How many dm3 of oxygen at STP would be required to react completely with 38.8g of propane? (3 marks)
11Alexandr11 [23.1K]

98.56 dm^3 of oxygen at STP would be required to react completely with 38.8g of propane.

<u>Given that :</u>

molar mass of propane = 44 g/mol

mass of propane = 38.8 g

∴ Moles present in 38.8 g of propane = \frac{38.8}{44} = 0.88 mole

<u>applying rule of balanced equations </u>

1 mole of propane = 5 moles of oxygen

0.88 mole of propane =  5 * 0.88 = 4.4 moles of oxygen

Note : volume of 1 mole of oxygen at STP = 22.4 dm^3

∴Total volume of oxygen required at STP = 22.4 * 4.4 = 98.56 dm^3

Hence we can conclude that the volume of oxygen at STP required to react completely 98.56 dm^3

Learn more : brainly.com/question/16998374

5 0
1 year ago
6. Which pair of compounds below represents a conjugate acid-base pair?
vova2212 [387]
H2S and HS- are a conjugate acid-base pair.
4 0
2 years ago
A laser pulse with wavelength 545 nm contains 4.85 mJ of energy. How many photons are in the laser pulse?
dusya [7]

<u>Given</u>:

Wavelength (λ) of the laser pulse = 545 nm = 5.45 * 10⁻⁹ m

Total energy of pulse = 4.85 mJ

<u>To determine:</u>

The number of photons in the laser of a given energy

<u>Explanation:</u>

Energy per photon (E) = hc/λ

where h = planck's constant = 6.626 *10⁻³⁴ Js

C = speed of light = 3*10⁸ m/s

λ = wavelength

E = 6.626 *10⁻³⁴ Js* 3*10⁸ms-1 /5.45 * 10⁻⁹ m = 3.65 * 10⁻¹⁹ J

Now,

# photons = total energy/Energy per photon

                 =  4.85 * 10⁻³ J* 1 photon / 3.65 * 10⁻¹⁹ J = 1.32 * 10¹⁶ photons

Ans: the laser pulse contains 1.32 * 10¹⁶ photons

3 0
3 years ago
Both male and female rats have genotype Bb. Based on the Punnett square below and according to Mendel’s law of dominance, which
olga2289 [7]
The offspring will have white hair is the correct answer, as white hair is the recessive gene.
3 0
2 years ago
Other questions:
  • Help me please............…
    15·1 answer
  • What is the mass of 22.4 L of H2O at STP?
    13·1 answer
  • In terms of electrons why does a cation have a positive charge
    15·1 answer
  • The equilibrium constant for the production of carbon dioxide from carbon monoxide and oxygen is kc=2×1011 this means that the r
    9·1 answer
  • Which of these statements is not true?question 20 options:atoms of isotopes of an element have different numbers of protons.atom
    6·2 answers
  • How many molecules are present in a sample of carbon dioxide, CO2 with a mass of 168.2?
    10·1 answer
  • What is the ph of a solution that results from mixing 25 ml of 0.15 M hcl to 25 ml of 0.52 m nh3?
    9·1 answer
  • A 0.1018 g sample of organic compound with a molar mass of 225.4 g/mol was
    5·1 answer
  • (35 POINTSSSS)help plzzz do as much as u can
    10·1 answer
  • During 5th period Dylan was a beast. She resisted the forces applied by 13 other students in her class all at once. Her 13 class
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!