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
erica [24]
3 years ago
13

According to John Dalton’s observations when elements combine in a compound

Physics
2 answers:
Andrej [43]3 years ago
6 0

<u>Answer:</u> When elements combine in a compound, the ratio of their masses is always the same

<u>Explanation:</u>

Dalton's theory is based on mainly two laws:

  • Law of conservation of mass
  • Law of constant composition.

Law of conservation of mass states that mass can neither be created nor be destroyed, but it can transformed from one form to another form.

Law of constant composition states that a compound always contain the elements in the fixed ratio by their masses.

<u>For Example:</u> In water (H_2O), the hydrogen and oxygen are present in the fixed ratio of 1 : 9 by their mass.

Hence, when elements combine in a compound, the ratio of their masses is always the same

gayaneshka [121]3 years ago
3 0

The answer is A.) The ratio of thier masses is always the same

You might be interested in
A 45 N girl sits on a bench 0.6 meters off the ground. How much work is done on the bench?
ycow [4]

Answer: 27 joules

Explanation:

Work is done when force is applied on the bench over a distance. it is measured in joules.

Workdone = force x distance

= 45 N x 0.6 metres

= 27 joules

Thus, 27 joules of work is done on the bench.

6 0
3 years ago
Find the rms speed of the molecules of a sample of n2 (diatomic nitrogen) gas at a temperature of 31.5°c.
Artemon [7]
The rms speed can be calculated using the following rule:
rms = sqrt ((3RT) / (M)) where:
R is the gas constant =  8.314 J/mol-K
T is the temperature = 31.5 + 273 = 304.5 degrees kelvin
M is the molar mass = 2*14 = 28 grams = 0.028 kg

Substitute with the givens to get the rms speed as follows:
rms speed = sqrt [(3*8.314*304.5) / (0.028)] = 520.811 m/sec
8 0
3 years ago
HELP PLZ 50 POINTS SPACE QUESTION
Naddik [55]

During the winter, the Northern Hemisphere tilted away from the sun, receiving solar radiation at more of an angle. <u>This results in colder temperatures and more extreme temperature changes.</u>

5 0
2 years ago
Protons have a positive charge<br><br> A.True<br> B.False
PIT_PIT [208]

Answer:

TRUE

Explanation:

Protons have a positive charge. Electrons have a negative charge. The charge on the proton and electron are exactly the same size but opposite. Neutrons have no charge.

5 0
3 years ago
Read 2 more answers
Which answer is a scientifically accurate description of velocity?
viktelen [127]

The boat traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

Explanation:

Velocity is a physical quantity that describes the rate of change of displacement with time.

   Velocity = \frac{Displacement}{time taken}

The quantity differs from speed in that it has both magnitude and direction.

From the options given above:

Displacement: The boat traveled in the north direction from the dock to a 200m mark.

Time taken: approximately less than 5 minutes was the duration of traveling.

This describes the boat's velocity accurately.

Learn more:

Velocity   brainly.com/question/10962624

#learnwithBrainly

3 0
3 years ago
Other questions:
  • What is the critical angle - easy definition
    8·1 answer
  • Satellite a has an orbital radius 3.00 times greater than that of satellite
    9·1 answer
  • 11 kg is a familiar weight for a bag of flour. You are baking cookies for a Save The Rain Forest fund drive. It takes 500 g of f
    6·1 answer
  • What is electricity?
    5·1 answer
  • Determine the velocity of a beam of electrons that goes undeflected when moving perpendicular to an electric and magnetic field.
    9·1 answer
  • Which is an example of a non-contact force?
    12·2 answers
  • I kinda don’t know how to solve this I need help.
    15·1 answer
  • Liquids, when heated,
    14·1 answer
  • onsidering light at the two ends of the visible light spectrum, violet light has a _____ wavelength and a _____ photon energy th
    7·1 answer
  • Control rods are used to slow down the reaction in the reactor core when the core becomes too hot. Please select the best answer
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!