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
elixir [45]
3 years ago
11

A 75.0-milliliter lightbulb is filled with neon, Theie are 7.16 10 4 moles ol gas In it, and the absolute pressure Is 116.8

Chemistry
1 answer:
avanturin [10]3 years ago
7 0

Answer:

Answer:- 1467 K

Solution:- It asks to calculate the kelvin temperature of the light bulb. Looking at the given info, it is based on ideal gas law equation, PV=nRT.

You might be interested in
During a reaction, the enthalpy of formation of an intermediate is 34 kJ/mol. During the reaction, 4 moles of the intermediate a
Lapatulllka [165]

The enthalpy change for the formation step of this intermediate is 136 kJ/mol.

<h3>What is the enthalpy?</h3>

The enthalpy of reaction can be obtained from the enthalpies of formation of the species involved. The enthalpy of reaction is the heat evolved or absorbed in a reaction.

Thus, the enthalpy change for the formation step of this intermediate is 4 *  34 kJ/mol = 136 kJ/mol.

Learn more about enthalpy change:brainly.com/question/4526346

#SPJ1

7 0
2 years ago
Calculate the pH of a buffer that is 0.020 M HF and 0.040 M NaF. The Ka for HF is 3.5 × 10-4.
zzz [600]
 <span>pH = pKa + log ([base]/[acid]) = -log (3.5 x 10^-4) + log (0.040/.020) = 3.46 - 0.30 = 3.16</span>
4 0
3 years ago
Read 2 more answers
. Through what three mechanisms do gamma rays interact with matter?
siniylev [52]

Answer:

Photoelectric effect, pair production and Compton scattering

Explanation:

Gamma rays, having no charge, can be slowed slowly by ionization as a material passes through. They suffer other mechanisms that eventually make them disappear, transferring their energy, they can cross several centimeters of a solid, or hundreds of meters of air, without undergoing any process or affecting the material they cross. Then they suffer one of the three effects and deposit much of their energy there. The three mechanisms of interaction with matter are: the photoelectric effect, the Compton effect and the production of pairs.

The photoelectric effect is that the photon meets an electron in the material and transfers all its energy, disappearing the original photon. The secondary electron acquires all the energy of the photon in the form of kinetic energy, and is sufficient to separate it from its atom and convert it into a projectile. This is stopped by ionization and excitation of the material

In the Compton effect the photon collides with an electron as if it were a clash between two elastic spheres. The secondary electron acquires only part of the energy of the photon and the rest takes it with another photon of lesser energy and diverted.

When an energy photon approaches the intense electric field of a nucleus, the production of pairs can happen. In this case the photon is transformed into an electron positron pair. Since the sum of the mass of the pair is 1.02 MeV, it cannot happen if the photon's energy is less than this amount. If the energy of the original photon is greater than 1.02 MeV, the surplus is distributed by the electron and the positron as kinetic energy, and the material can be ionized. The positron at the end of its path forms a positronium and then annihilates producing two annihilation photons, 0.51 MeV each.

3 0
3 years ago
If the pOH of a solution is 9.1, what is the concentration of OH- ions in that solution?
Amiraneli [1.4K]

Answer:

7.9432*10^-10 or 10^-9.1

Explanation:

pOH=-log[OH]

4 0
2 years ago
A chemical reaction in which one element replaces another element in a compound can be catergorized as a
Gwar [14]

Answer:

\huge\boxed{\sf Single \ displacement \ reaction}

Explanation:

<h2><u>Displacement reaction:</u></h2>
  • A reaction in which an element displaces or replaces another element of a compound is called a displacement reaction.
<h3><u>Types:</u></h3>

There are 2 types:

<h3><u>1. Single displacement reaction:</u></h3>
  • If one element displaces 1 other element of a compound, it is called single displacement reaction.
  • <u>Example</u>:  CuSO_4 +Fe \longrightarrow \ FeSO_4 + Cu
  • Here, 1 element (Fe) displaces 1 other element (Cu) of a compound.
<h3><u>2. Double displacement reaction:</u></h3>
  • If two elements in two compounds displace one another, it is called double displacement reaction.
  • <u>Example:</u> CuSO_4+NaOH \longrightarrow Cu(OH)_2 + Na_2SO_4
  • Here, Copper and sodium both displace each other.

\rule[225]{225}{2}

4 0
2 years ago
Other questions:
  • What is the name of CuCO3 ???
    7·1 answer
  • Which potential component in the synthetic pain relief mixture could be separated from the mixture using liquid-liquid extractio
    7·1 answer
  • What determines the chemical properties of an element?
    11·2 answers
  • An organism that is able to form nutritional organic substances from simple inorganic
    13·1 answer
  • What is the density of an block of salt having a mass of 8.0 g and a volume of 25 cm3?
    5·2 answers
  • Two students measure the time it takes for a race to finish . One student measured 75.5 seconds . The other student measures 1 m
    15·1 answer
  • Of the reactions listed below, which one is NOT a combination reaction? A) C + O2 =&gt; CO2 B) 2Mg + O2 =&gt; 2MgO C) 2N2 + 3H =
    15·1 answer
  • Calculate the number of moles present in 9.50g of CO2
    6·1 answer
  • I need helppppp<br> I need to pass this test
    12·1 answer
  • What did Scientist found that surprised them after making a map of the ocean floor?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!