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
Akimi4 [234]
3 years ago
14

A sample of an unknown gas at STP has a density of 0.630 gram per liter. What is the gram molecular mass of this gas?

Chemistry
1 answer:
jeyben [28]3 years ago
3 0
<span>STP means standard temperature and pressure at 0°C (273K) and 1 atm (atmosphere). The density of the unknown gas is 0.63 gram per liter. The deal gas equation is PV = nRT. The n is the numer of moles and can be represented as mass of the gas, m, divided by the molar mass, c.  so we have,</span>  

PV = nRT
PV = (m/c)RT
Since the density is d = m/V
Pc = (m/V)RT
Pc = dRT
c = drT/P  

substitute the values into the equation,
c = [(0.63g/L)(0.08206 L-atm/mol-K)(273K)]/(1atm)
<u>c = 14.11 g/mol</u>
You might be interested in
Select all of the physical properties of matter
Vera_Pavlovna [14]

Answer:

A) solubility

B)luster

D)Density

F)magnetism

Explanation:

A physical property is one that tells us everything about what a substance is when no change is is occurring to its constituent.

Such properties can be observed with our senses or instruments or pieces of apparatus.

  • Examples are luster, density, solubility, taste, odor, color, melting point, boiling point etc.
3 0
3 years ago
In what way does the shape of a molecule affect how the molecule is
S_A_V [24]

Answer:

B

Explanation:

I'm not 100% sure, but B seems like the most likely answer because the shape of a molecule usually is a major factor in how molecules interact with each other.

I hope that helps.

6 0
3 years ago
Why does food have potential energy?
Savatey [412]

Answer:

So that if we feel weak, energy is released through it so we can do work and do stuff like walk or think. It's like stored energy that can do things for the future.

Please give brainliest if it helped.

3 0
3 years ago
Read 2 more answers
Which part of the atom is so small it contributes very little to the mass of an atom
sasho [114]

My part of the atom, I'm guessing you are referring to the protons, neutrons, and electrons.

The smallest of these three is the electron.

8 0
4 years ago
How many molecules are in 2.5 mol of NaCl?
Vlada [557]

Answer:

1.51 x 10²⁴molecules

Explanation:

Given parameters:

Number of moles of NaCl  = 2.5moles

Unknown:

Number of molecules  = ?

Solution:

The number of molecules that can be found in a given mole is given as the Avogadro's constant;

       1 mole of substance  = 6.02 x 10²³ molecules

       2.5 mole of NaCl  = 2.5 x 6.02 x 10²³ molecules

                                       = 1.51 x 10²⁴molecules

6 0
3 years ago
Other questions:
  • Why is sodium metal (very soft and can cut easily) stored under oil?
    14·1 answer
  • A 2.00 gram sample of helium gas at STP will occupy a volume of
    15·1 answer
  • the density of water at different temperature is listed in the table above. Based on this information we can predict that the de
    12·1 answer
  • If 1.0 mL of 6.0 HCl is added to 499 mL of water to give exactly a 500 mL solution, what is the molarity of the solution
    5·1 answer
  • If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? Check all that ap
    11·2 answers
  • Warm, moist air from over the ocean moves inland over a city. The moving air mass is blocked by a mountain range. Which type of
    8·1 answer
  • Which type of bonding involves a lattice of positive ions surrounded by a cloud of delocalized electrons?
    9·2 answers
  • 3. What might be the formula for calculating speed?
    9·1 answer
  • Does moisture affect the length of time it takes for mold to grow on bread?
    15·1 answer
  • A liquid has a density of 4.0 oz/cup. Express the density of the liquid in lb/gallon.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!