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
yan [13]
2 years ago
11

The density of a material is a/an

Chemistry
1 answer:
sesenic [268]2 years ago
5 0
Density is a measure of mass per volume, and the average density of an object equals its total mass divided by its total volume
Hope this helps :)
You might be interested in
Help Light reflecting from the aluminum coating on a CD ____________ and then interferes.
adelina 88 [10]

Answer:

Reflection

Hope it will help you

8 0
2 years ago
mixture of N 2 And H2 Gases weighs 13.22 g and occupies a volume of 24.62 L at 300 K and 1.00 atm.Calculate the mass percent of
anygoal [31]

<u>Answer:</u> The mass percent of nitrogen gas and hydrogen gas is 91.41 % and 8.59 % respectively.

<u>Explanation:</u>

To calculate the number of moles, we use the equation given by ideal gas equation:

PV = nRT

where,

P = Pressure of the gaseous mixture = 1.00 atm

V = Volume of the gaseous mixture = 24.62 L

n = number of moles of the gaseous mixture = ?

R = Gas constant = 0.0821\text{ L atm }mol^{-1}K^{-1}

T = Temperature of the gaseous mixture = 300 K

Putting values in above equation, we get:

1.00atm\times 24.62L=n_{mix}\times 0.0821\text{ L atm }mol^{-1}K^{-1}\times 300K\\\\n_{mix}=\frac{1.00\times 24.62}{0.0821\times 300}=0.9996mol

We are given:

Total mass of the mixture = 13.22 grams

Let the mass of nitrogen gas be 'x' grams and that of hydrogen gas be '(13.22 - x)' grams

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

<u>For nitrogen gas:</u>

Molar mass of nitrogen gas = 28 g/mol

\text{Moles of nitrogen gas}=\frac{x}{28}mol

<u>For hydrogen gas:</u>

Molar mass of hydrogen gas = 2 g/mol

\text{Moles of hydrogen gas}=\frac{(13.22-x)}{2}mol

Equating the moles of the individual gases to the moles of mixture:

0.9996=\frac{x}{28}+\frac{(13.22-x)}{2}\\\\x=12.084g

To calculate the mass percentage of substance in mixture we use the equation:

\text{Mass percent of substance}=\frac{\text{Mass of substance}}{\text{Mass of mixture}}\times 100

Mass of the mixture = 13.22 g

  • <u>For nitrogen gas:</u>

Mass of nitrogen gas = x = 12.084 g

Putting values in above equation, we get:

\text{Mass percent of nitrogen gas}=\frac{12.084g}{13.22g}\times 100=91.41\%

  • <u>For hydrogen gas:</u>

Mass of hydrogen gas = (13.22 - x) = (13.22 - 12.084) g = 1.136 g

Putting values in above equation, we get:

\text{Mass percent of hydrogen gas}=\frac{1.136g}{13.22g}\times 100=8.59\%

Hence, the mass percent of nitrogen gas and hydrogen gas is 91.41 % and 8.59 % respectively.

5 0
3 years ago
021.59 cmasdfghjkl;'`1234567890-erghjm
Sergeeva-Olga [200]
Cmasdfghjkl;^2 I think

Lol hoped this helped
6 0
3 years ago
Read 2 more answers
When does boiling occur?
butalik [34]

Water boils at 100 Degrees Celsius or 212 degrees Fahrenheit

8 0
3 years ago
The addition of a catalyst to a chemical reaction provides an alternate pathway that
Degger [83]
<span>The addition of a catalyst to a chemical reaction provides an alternate pathway that c</span>atalysts lowers the activation energy.
4 0
3 years ago
Read 2 more answers
Other questions:
  • HELP PLEASE
    15·1 answer
  • How many electrons does the isotope oxygen-18 have?<br> 6<br> 8<br> 10<br> 18
    13·1 answer
  • What is the name for the new technology that works on the atomic or molecular level?
    6·1 answer
  • Ytu perform an electrolysis reaction using FeCl, iron (1) chloride. Which of the following will happen?
    11·1 answer
  • The movement of organisms into a range is called
    13·1 answer
  • Explain why molecules of water were attracted to the negatively charged plastic tube while molecules of cyclohexane were not. Dr
    10·1 answer
  • What all separation methods are used in food industry ?
    10·1 answer
  • Helpp i give brainly-est no links just help please!!
    10·1 answer
  • What is the atomic weight of Na?
    12·1 answer
  • What happens when Magnesium hydroxide is heated? (Decomposition)
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!