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
vichka [17]
2 years ago
13

To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 2.2-L bulb, then filled

it with the gas at 2.00 atm and 27.0 ∘C and weighed it again. The difference in mass was 5.1 g.
Identify the gas. Express your answer as a chemical formula.
Chemistry
1 answer:
Ber [7]2 years ago
7 0

Answer:

N2

Explanation:

We use the ideal gas equation to calculate the number of moles of the diatomic gas. Then from the number of moles we can get

Given:

P = 2atm

1atm = 101,325pa

2atm = 202,650pa

T = 27 degrees Celsius = 27 + 273.15 = 300.15K

V = 2.2L

R = molar gas constant = 8314.46 L.Pa/molK

PV = nRT

Rearranging n = PV/RT

Substituting these values will yield:

n = (202,650 * 2.2)/(8314.46* 300.15)

n = 0.18 moles

To get the molar mass, we simply divide the mass by the number of moles.

5.1/0.18 = 28.5g/mol

This is the closest to the molar mass of diatomic nitrogen N2.

Hence, the gas is nitrogen gas

You might be interested in
Write balanced nuclear equations for the following:(b) Formation of francium-221 through α decay
Lady_Fox [76]

The balanced nuclear equations for the following:(b) Formation of francium-221 through α decay is (225,89)Ac -> (4,2)alpha + (221,87)Fr

<h3>What is balanced nuclear equation?</h3>

A nuclear reaction is generally expressed by a nuclear equation, which has the general form, where T is the target nucleus, B is the bombarding particle, R is the residual product nucleus, and E is the ejected particle, and Ai and Zi (where I = 1, 2, 3, 4) are the mass number and atomic number, respectively. Finding a well balanced equation is critical for understanding nuclear reactions. Balanced nuclear equations provide excellent information about the energy released in nuclear reactions. Balancing the nuclear equation requires equating the total atomic number as well as the total mass number before and after the reaction using the rules of atomic number and mass number conservation in a nuclear reaction.

To learn more about nuclear equations visit:

brainly.com/question/12221598

#SPJ4

8 0
1 year ago
I'll mark brainliest.....
Ilya [14]
P = 203
V = 10
n = ?
R = 8.31
T = 298
PV = nRT \\ 203(10) = n(8.31)(298) \\ 2030 = 2476.38n \\ n =  \frac{2030}{2476.38} = 0.819 mol
5 0
3 years ago
Methyl bromide (CH3Br) is produced naturally by fungi. Methyl bromide has also been used in agriculture as a fumigant, but this
Troyanec [42]

Answer:

See image attached for structure of CH3Br

Explanation:

A lewis structure structure is a representation of a covalent compound in which dots are used to show valence electrons, lone pairs and bonding electrons. The system was introduced by sir G.N Lewis in 1916 in his article titled 'Atom and Molecule'. They are also called dot electron diagrams of molecules. CH3Br molecule contains a total of fourteen electrons. Valence electrons are shown by dots around the atom of each element as clearly seen in the image attached.

8 0
3 years ago
Which of the following describes an energy transformation from chemical to electrical to light energy?
Law Incorporation [45]
The answer is B. a flashlight uses a battery to operate.

The battery represents the chemical energy. This is converted into electricity, which is converted into light energy.

6 0
2 years ago
Read 2 more answers
Pb + Fe(SO4) =Pb(SO4) + Fe what type of reaction is this ?
VikaD [51]

Answer:

Single replacement

Explanation:

3 0
2 years ago
Other questions:
  • As you increase the temperature of a solute it's solubility​
    6·1 answer
  • Which of the following is an example of a decomposition reaction? 1) H2 + O2 ----------→ H2O 2) MgO2 -------------→ Mg + O2 3) M
    15·1 answer
  • Which of these substances contains the most total atoms per molecule?
    11·2 answers
  • One _____ is the amount of energy needed to apply a force of 1 Newton over a distance of 1 meter. (Spell out your answer.)
    15·1 answer
  • When burned, coal releases _____. oxygen carbon dioxide methane sulfur nitrogen oxide?
    15·1 answer
  • HELP NEEDED 20POINTS i have alot of questions of PATTERNS OF INHERITANCE
    14·2 answers
  • This type of nucleus is formed during a solar nuclear reaction by the fusion of four nuclei.
    8·1 answer
  • What can you infer about a wave with a short wavelength?
    8·2 answers
  • Why we add PH10 When we determine the zn ion​
    6·1 answer
  • Please only answer if you're going to help.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!