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
Lesechka [4]
3 years ago
8

Chemistry class 9 chapter 1​

Chemistry
1 answer:
Aleksandr [31]3 years ago
7 0

Explanation:

i) Melting point = 15°C and Boiling point = 110°C

ii) The region C on graph there is only liquid state, the region A on graph there is only solid state.

iii) The straight line A1 - B1 shows that the melting point of solid wax and getting converted to liquid form.

iv) Latent heat of vaporization is a physical property of a substance.

It is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure. 

v) At 'B' the wax is at both solid and liquid state

You might be interested in
Describe how glacier mice are complete ecosystems, even though they are tiny.<br> GIVING BRAINIEST
Valentin [98]

Answer: The clumps, known as glacier mice, have been found to contain miniature ecosystems

Explanation: Because glaciers are in constant, if slow, motion and are frequently blasted by strong winds.

4 0
3 years ago
How do the polar easterlies and the jet stream work together to affect the
ahrayia [7]

Answer:

they can carry cold arctic air, producing snow and freezing weather.

Explanation:

-w- hope it helps

8 0
3 years ago
An analysis of physical, chemical and microscopic properties of urine is called?​
oksano4ka [1.4K]

Answer:

urinalysis

Explanation:

5 0
4 years ago
Read 2 more answers
A hydrogen-filled balloon was ignited and 2.10 g of hydrogen reacted with 16.8 g of oxygen. How many grams of water vapor were f
stiks02 [169]
Hydrogen + oxygen --> water
2,1g + 16,8g = x
x = 18,9g
5 0
3 years ago
A substance having
denpristay [2]

Explanation:

Specific heat capacity is how much is required to heat the unit of mass by one degree. Therefore, if you have a higher heat capacity it required more energy, therefore, it takes longer to heat up. whereas having a lower heat capacity it takes less time to best up as it requires less energy.

7 0
4 years ago
Other questions:
  • Which human job is most similar to the role of a producer?
    8·1 answer
  • Which type of energy is associated with the random motion of atoms and molecules in a sample of air?(1) chemical energy (2) elec
    15·1 answer
  • What phases (solid, liquid, gas) are present in the unlighted candle? In the burning candle? Which phase appears to take part in
    8·2 answers
  • For the chemical reaction HCN ( aq ) + KOH ( aq ) ⟶ H 2 O ( l ) + KCN ( aq ) HCN(aq)+KOH(aq)⟶H2O(l)+KCN(aq) write the net ionic
    8·1 answer
  • A hydrogen filled balloon has a volume of 8.3 L at 36°C and 751 mmHg. How many moles of hydrogen are inside the balloon?
    14·1 answer
  • A balloon containing a sample of helium gas measures 1.50 L at a temperature of 25.0°C is placed in a refrigerator at 36.0°F. Ca
    6·1 answer
  • The atom in a sample of an element must contain nuclei with the same number of?
    8·1 answer
  • A chemical equation is balanced when the number of each
    10·1 answer
  • En 200 gramos de carburo de potasio ,cuya fórmula química es K4C , Cuántos moles de esa sustancia existen ?
    9·1 answer
  • Select the correct answer.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!