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
zhannawk [14.2K]
2 years ago
5

10. The molar mass of an unknown gas was measured by an effusion experiment. It was found that it took 63 s for the gas to effus

e, whereas nitrogen gas (N2) required 48 s. The molar mass of the unknown gas is closest to- A) 24 g/mol B) 37 g/mol C) 16 g/mol D) 32 g/mol E) 48 g/mol
Chemistry
1 answer:
ki77a [65]2 years ago
4 0

Answer:

chu papi

Explanation:

You might be interested in
A candle is 10 cm high and 2 cm in diameter physical or chemical property​
rewona [7]

Answer: Physical property

Explanation: length and dimensions are under physical properties of matter.

3 0
3 years ago
I need help with Chemistry: Mole Conversion<br> It must be answered in complete detail
Anni [7]

Answer:

As Per Given Information

Number of moles SO₂ ( Sulphur dioxide ) is 0.30

We 've been asked to find the number of atoms in given moles of Sulphur dioxide .

Value of Avogadro Number is 6.022 × 10²³ mol⁻¹

For finding the number of atoms we will use formale

\underline{\boxed{\textbf{\textsf{ Number \: of \: atoms \:  = Given \: moles \:  . Avogadro \: number}}}}

Putting the given value we obtain

\sf \twoheadrightarrow \: Number \: of \: atoms \:  = 0.30 \times 6.022 \times  {10}^{  23}    \\  \\ \sf \twoheadrightarrow \: Number \: of \: atoms \:  = \: 1.8066 \times  {10}^{ 23} atoms

So, the number of atoms in sulphur dioxide is 1.8066 × 10²³

8 0
1 year ago
Which analogy best represents a supersaturated solution? an empty elevator that has a maximum load of 20 people a single person
Karo-lina-s [1.5K]
25 people in an elevator that has a maximum load of 20 people
8 0
2 years ago
Read 2 more answers
How many moles of FeCI3 are present in 345.0 g FeCI3
Sphinxa [80]

Answer:

\boxed {\boxed {\sf About \ 2.127 \ moles \ of \ FeCl_3}}

Explanation:

To convert from moles to grams, the molar mass must be used.

1. Find Molar Mass

The compound is iron (III) chloride: FeCl₃

First, find the molar masses of the individual elements in the compound: iron (Fe) and chlorine (Cl).

  • Fe:  55.84 g/mol
  • Cl:  35.45 g/mol

There are 3 atoms of chlorine, denoted by the subscript after Cl. Multiply the molar mass of chlorine by 3 and add iron's molar mass.

  • FeCl₃: 3(35.45 g/mol)+(55.84 g/mol)=162.19 g/mol

This number tells us the grams of FeCl₃ in 1 mole.

2. Calculate Moles

Use the number as a ratio.

\frac{162.19 \ g \ FeCl_3}{1 \ mol \ FeCl_3}

Multiply by the given number of grams, 345.0.

345.0 \ g \ FeCl_3 *\frac{162.19 \ g \ FeCl_3}{1 \ mol \ FeCl_3}

Flip the fraction so the grams of FeCl₃ will cancel.

345.0 \ g \ FeCl_3 *\frac{1 \ mol \ FeCl_3}{162.19 \ g \ FeCl_3}

345.0 *\frac{1 \ mol \ FeCl_3}{162.19 }

\frac{345.0 \ mol \ FeCl_3}{162.19 }

Divide.

2.12713484 \ mol \ FeCl_3

3. Round

The original measurement of grams, 345.0, has 4 significant figures. We must round our answer to 4 sig figs.

For the answer we calculated, that is the thousandth place.

The 1 in the ten thousandth place tells us to leave the 7 in the thousandth place.

\approx 2.127 \ mol \ FeCl_3

There are about <u>2.127 mole</u>s of iron (III) chloride in 345.0 grams.

6 0
2 years ago
Which of these properties is a physical property of aluminum. aluminum rust when it is exposed to moisture in air. Aluminum is a
katen-ka-za [31]
Aluminium is a good conductor of heat
physical properties is what you can see about the element or object all other options are chemical properties
6 0
3 years ago
Read 2 more answers
Other questions:
  • How do you do these?
    15·1 answer
  • Green plants use light from the sun to drive photosynthesis. photosynthesis is a chemical reaction in which water (H2O) and carb
    5·1 answer
  • Please help
    12·1 answer
  • The number of atoms in 2.0 moles of NaOH is _____ of 1.0 mole of H2O.
    5·1 answer
  • a 25 ml sample of gas is in a syringe at 22C if it was cool down to 0 C what will the volume of the gas become
    11·1 answer
  • For the product of the reaction below, which proton is removed irreversibly by NaNH2 base, thus preventing any isomerization of
    6·1 answer
  • Given these reactions, X ( s ) + 1 2 O 2 ( g ) ⟶ XO ( s ) Δ H = − 668.5 k J / m o l XCO 3 ( s ) ⟶ XO ( s ) + CO 2 ( g ) Δ H = +
    9·1 answer
  • The
    10·2 answers
  • Ammonia reacts with fluorine gas according to the thermochemical equation given
    14·2 answers
  • What is the definition of <br> incandescence?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!