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
Gala2k [10]
3 years ago
8

Why is cold air cold?

Chemistry
1 answer:
Sholpan [36]3 years ago
4 0

Explanation:

Energy makes molecules in the air move faster and expand, decreasing density. The opposite is true for cold air. Molecules are closer together, and absorb less energy.

You might be interested in
An unknown compound has a percent composition of 52.10% potassium, 15.8% carbon, and 32.1% oxygen. The molar mass of the compoun
lianna [129]
To determine the empirical formula and the molecular formula of the compound, we assume a basis of the compound of 100 g. We do as follows:

       Mass              Moles                     
K    52.10     52.10/39.10 = 1.33         1.33/1.32 ≈ 1
C    15.8       15.8/12         = 1.32         1.32/1.32 ≈ 1
O     32.1      32.1 / 16       =  2.01        2.01/1.32 ≈ 1.5

The empirical formula would most likely be KCO.
The molecular formula would be K2C2O3.
4 0
3 years ago
Read 2 more answers
Which of the following elements would most likely form an ion with a +2 charge?
julsineya [31]

Answer:

Mg

Explanation:

Magnesium has a valency of +2

7 0
2 years ago
Read 2 more answers
Easy Help Please!!!!!!
IRISSAK [1]
False it can only be one to take place
5 0
3 years ago
What mass of oxygen is required to completely react with 2 moles of ch4
Firlakuza [10]
The balanced reaction that describes the reaction between methane and oxygen to produce water and carbon dioxide is expressed CH4  + 2 O2 = CO2 +2H2O. Hence for 2 moles of methane used, 4 moles of oxygen are needed to react completely.
7 0
2 years ago
Why are intensive properties useful for identifying a substance?
Lesechka [4]

Answer:

d

They do not depend on the amount of substance you have.

3 0
2 years ago
Other questions:
  • Consider the formation of nitryl fluoride: 2NO2(g)+F2(g)⇌2NO2F(g) The reaction is first order in F2 and second order overall. Wh
    7·1 answer
  • The fluorocarbon compound c2cl3f3 has a normal boiling point of 47.6°c. the specific heats of c2cl3f3(l) and c2cl3f3(g) are 0.91
    15·1 answer
  • How could you determine which household substances are acids, bases, or neutral substances?​
    11·1 answer
  • Which of the following could be true of two species that have a competitve ralationship in the same ecosystems Help me out pleas
    7·2 answers
  • Before using glassware in the lab, it is important to _______.
    12·2 answers
  • Smh why do people always have to use fake profile pictures? Its not like anyone is gonna judge you it isnt facebook its a websit
    6·1 answer
  • What system is responsible for transporting food, waste, and gases throughout the body?
    7·1 answer
  • What is the purpose of continuing to heat a substance after it reaches a temperature plateau?
    5·1 answer
  • 50 + 50 - 25 x 0 + 5 + 5 =​
    8·2 answers
  • What is pH - discuss the pH scale
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!