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
Stells [14]
3 years ago
9

Examine the images.

Chemistry
2 answers:
gavmur [86]3 years ago
5 0

Answer:

4 th image

Explanation:

water is being boiled n the 4th image indicating that the change between liquids and gasses is water vapor.

vivado [14]3 years ago
3 0

Answer:

The soda bottles and the boiling water

Explanation:

just trust

You might be interested in
The heat capacity of liquid water is 4.18 J/g·°C and the heat of vaporization is 40.7 kJ/mol. How many kilojoules of heat must b
pychu [463]

Answer:

The correct answer would be - 2.4KJ or, 2400J

Explanation:

Given:

heat capacity of liquid water - 4.18 J/g·°C

heat of vaporization - 40.7 kJ/mol

Mass of water = 1g

Moles of water = mass/molar mass

= 1g/18.016g

= 0.055 moles

Then,

Total heat required = q1(to raise the temperature to 100) + q2(change from the liquid phase to gas/steam)

= m *s*dt + moles * heat of vaporization

= (1g * 4.18 j/gc * (100-67)) + 0.055* 40.7 KJ

= 137.94J + 2.26KJ

=0.138KJ + 2.26KJ

=2.4KJ or, 2400J

Thus, the correct answer would be - 2.4KJ or, 2400J

3 0
3 years ago
Which of the following does not correctly describe Sn2 reactions of alkyl halides? A) The mechanism consists of a single step wi
Rashid [163]

Answer:

The correct answer is B the tertiary halides reacts faster than primary halides.

Explanation:

During SN2 reaction the nucleophile attack the alkyl halide from the opposite side resulting in the formation of transition state in which a bond is not completely broken or a new bond is not completely formed.

   After a certain period of time the nucleophile attach with the substrate by substituting the existing nuclophile.

  An increase in the bulkiness in the alkyl halide the SN2 reaction rate of that alkyl halide decreases.This phenomenon is called steric hindrance.

  So from that point of view the that statement tertiary halides reacts faster that secondary halide is not correct.

7 0
3 years ago
Which statement most completely describes an object's motion?
sammy [17]

Answer:

Explanation:

First one or fourth one

7 0
2 years ago
Read 2 more answers
Melinda filled two glasses equal size half-full with water. The water in one glass was 50 degrees Celsius. The water in the othe
Deffense [45]

Answer:

30 °C

Explanation:

When you pour water from one glass to the other, the heat energy will flow from the hot water to the cold.

You have equal masses of water in each glass. The hot water should cool down as much as the cold water warms up.

The final temperature should be halfway between the starting temperatures in each glass.

(10 °C + 50°C)/2 = 60 °C/2 = 30°C

The temperature of the full glass of water should be 30 °C.

5 0
3 years ago
What is the heat of reaction when sulfur dioxide reacts with oxygen to form sulfur trioxide? 2so2(g) + o2(g) → 2so3(g) (∆hf0 so2
padilas [110]

Answer : The enthalpy change for this reaction is -193.8 kJ.

Solution :

The balanced chemical reaction is,

2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)

The expression for enthalpy change is,

\Delta H=\sum [n\times \Delta H_f(product)]-\sum [n\times \Delta H_f(reactant)]

\Delta H=[(n_{SO_3}\times \Delta H_{SO_3})]-[(n_{O_2}\times \Delta H_{O_2})+(n_{SO_2}\times \Delta H_{SO_2})]

where,

n = number of moles

\Delta H_{O_2}=0 (as heat of formation of substances in their standard state is zero

Now put all the given values in this expression, we get

\Delta H=[(2\times -395.7)]-[(1\times 0)+(2\times -298.8)]

Delta H=-193.8kJ

Therefore, the enthalpy change for this reaction is, -193.8 KJ

4 0
3 years ago
Other questions:
  • How many grams of NaBr are needed to produce 187 grams of CaBr2
    5·2 answers
  • How many moles are in 2.0 grams of Na?
    8·1 answer
  • Whose cell walls may contain cellulose can be plantlike, animal like or fungus
    5·1 answer
  • What kind of mixture is a solution? A suspension? A colloid?
    5·1 answer
  • Which substance cannot be separated physically or chemically? a solution an element a compound a mixture
    6·2 answers
  • What is the oxidation state of an individual carbon atom in caco3?
    11·1 answer
  • Give me lil reasoning so I know your not lying for points
    8·1 answer
  • Which statement describes the feeling interactions between frogs and insects? Select all that apply.
    6·1 answer
  • The North Pole of a magnet will attract to the South Pole of another magnet. True or False
    5·1 answer
  • Which property is a chemical property of a substance?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!