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
valina [46]
4 years ago
15

2. State one difference between gas and vapour. Which of the following substance in the gaseous state should be called a vapour?

(i) Helium
(ii) Nitrogen (iii) Sulphur (iv) Carbon dioxide.
Chemistry
1 answer:
Neporo4naja [7]4 years ago
3 0
Difference between Gas and Vapour:
                                                          
Gas:
        A thermodynamic state in which a substance exists only in one phase i.e. Gas phase. In above given examples N₂, He and CO₂ exists as gases at room temperature. These gases cannot form a solid or liquid phase along with gas phase as these states requires very low temperatures.

Vapours:
               It is a thermodyanamic state in which a substance exists in more than one phase. In given options Sulfur can exist in vapor state. This is because sulfur exists in a cyclic or chain form due to catenation (self linkage property). Therefore, a lower members of S allotrops can form a vapours.
You might be interested in
A scientist wants to study the diversity of soil bacteria found during different months of the year A.what is her independent va
OLEGan [10]

Answer:

No se ingles te ayudaria pero no entiendo nada

3 0
3 years ago
DESPERATE WILL GIVE BRAINLIST AND THANKS
irina [24]

anaphase

or if not

telophase

6 0
3 years ago
What state of matter is at 35 Celsius
Otrada [13]
Different forms of matter have different melting/boiling points. For example, at 100 degrees Celsius, H2O (water) will turn from lliquid to gas. But NaOH (table salt) doesn't even go from solid to liquid until some 800 degrees Celsius. So, in order to figure out which state matter is at 35 Celsius, you'd have to be more specific about what kind of matter...
7 0
3 years ago
How many grams of acetylene are produced by adding water to 5.00 g CaC2?
Murljashka [212]

Answer:

2.03125g of acetylene

Explanation:

First thing's first, we have to write out the balanced chemical equation;

CaC2(s) + 2H2O(l) → Ca(OH)2(aq) + C2H2(g)

Water is in excess, so CAC2 is our limiting reactant. i.e it determines the amount of product that would be formed.

1 mol of CaC2 produces 1 mol of C2H2

In terms of mass;

Mass = Number of moles * Molar mass

where the molar mass of the elements are;

Ca = 40g/mol

C = 12g/mol

H = 1g/mol

CaC2 = 40+ (2*12) = 64g/mol

C2H2 =( 2 * 12) + ( 2 * 1) = 26g/mol

64g (1 * 64g/mol) of CaC2 produces 26g ( 1mol * 26g/mol) of C2H2

5g would produce x?

64 = 26

5 = x

Upon solving for x we have;

x = (5 * 26) / 64

x = 2.03125g

5 0
3 years ago
Through which of the following processes is carbon directly transferred between living organisms and the environment?
sertanlavr [38]

Answer:

The answer is carbon cycle.

Explanation:

The carbon cycle is an important process for living organisms. As plants prepare their food through photosynthesis and is also an important source of fossil fuels for human activities.

Therefore carbon atoms are regenerated again and again in the carbon cycle process. This recycling process takes place between livings and nonliving things in the environment and also within the earth biosphere.

Abundance supply of carbon is necessary to carry out the biological processes. The entire carbon cycle is actually made up of sourced and sinks elements.

4 0
3 years ago
Other questions:
  • What moves across axons?
    5·2 answers
  • What is the mass of the missing reactant in the following reactions, given that the reaction goes to completion? Do not include
    15·1 answer
  • What does the the release or absorption of energy indicate?
    5·1 answer
  • HELP!!! PLEASE!! I don't know this one question!!!
    9·1 answer
  • Identify the base in this acid-base reaction:
    15·1 answer
  • MgCl2 + NH4NO3 --> Mg NO3 + NH4Cl is this a double replacement reaction?
    14·1 answer
  • NEED HELP ASAP
    11·2 answers
  • Use the balanced equation below to answer the question that follows
    13·1 answer
  • Magneisum and Bromine formation
    11·1 answer
  • Roq-sbam-yiq come guys fast ​only g
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!