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
slega [8]
3 years ago
10

15 POINTS!!!!!!

Chemistry
2 answers:
valentina_108 [34]3 years ago
6 0

Important discoveries from  Lavoisier who changed the field of chemistry in the late 1700s

  • 1. periodic system
  • 2. the discovery of oxygen
  • 3. the law of conservation of mass
  • 4. the importance of weighing
<h3><em>Further explanation</em></h3>

There are several important discoveries from Antoine Laurent Lavoisier who changed the field of chemistry in the late 1700s

The findings include:

  • 1. he discovered the naming of the chemical periodic system for the first time on which the naming of the modern periodic system was based
  • 2. He put forward the term "oxygen" and stated that air consists of two components namely nitrogen and oxygen.
  • And oxygen is what plays an important role in the combustion process of a substance
  • 3. He stated the law of conservation of mass.

Experiments carried out by reacting oxygen and mercury in a closed system and produce mercury oxide

And if it is heated it will again produce the same amount of oxygen and mercury

From this experiment, he stated the law that:

In a closed system, the total mass of the substance before the reaction will be equal to the total mass of the reaction product.

  • 4. Lavoisier's precision in the importance of the weighing process in chemical reactions causes an important basis in the calculation of chemistry for the progress of research in the future

<h3><em>Learn more</em></h3>

Law of conservation of mass https://brainly.in/question/4830694

application of mass conservation law brainly.com/question/6677869

the law of conservation of matter

brainly.com/question/12733091

Keywords: mass, closed system, Lavoisier, combustion, periodic system

pickupchik [31]3 years ago
4 0
He proposed the Law of Conservation of Matter, being the first to say that matter can not be created nor destroyed.
You might be interested in
Francine makes several measurements of the mass of a metal block. The data set is shown in the table below. Measurement Mass of
Lana71 [14]
The characteristic being calculated here is the mean or the average of the data set.
To check:
(20.73 + 20.76 + 20.68 + 20.75)/4 [we divide it by 4 because there are 4 numbers]
= 82.92 / 4
= 20.73
6 0
3 years ago
Read 2 more answers
C2H2 + 2H2 → C2H6<br> How many moles of hydrogen are needed to produce 13.78 mol of ethane?
Scilla [17]

Answer:

27.56 moles

Explanation:

8 0
3 years ago
Suggest why sodium wasn’t produced until the early 19th century.
AlexFokin [52]

Answer:

The reason is that sodium attaches itself very strongly to other elements. Its compounds are very difficult to break apartand also because it is so reactive.

5 0
3 years ago
Sally and Sue took a canoe trip down the Mississippi River. Their average speed for the trip south was 20 miles/hour. 20 miles/h
Anna35 [415]

C

Speed is the time rate at which Sue covers the distance. It is derived by dividing the total distance covered by the total time taken to cover the distance . Usually SI unit for speed is km/h or mph or m/s.

Explanation:

Speed is also referred to as velocity- so the two are synonymous.

Acceleration is the rate at which speed is increasing. It is usually given by SI unit m/s². The opposite of acceleration is deceleration which is the rate at which speed is decreasing.

Distance is the measurement, in meters of kilometers or miles or yards..etc, that has been covered from one point to another.  

Learn More:

For more on speed, velocity, distance and acceleration check out;

brainly.com/question/13874410

brainly.com/question/1822168

#LearnWithBrainly

6 0
3 years ago
Read 2 more answers
How many bonds and lone pairs are in the molecule SIH4?
lesantik [10]

Answer:

there are no valence electrons left over, so the molecule has four bond pairs and no lone pairs.

Explanation:

6 0
3 years ago
Other questions:
  • The label on an ocean spray cran-rasberry drink lists 30 g of sugar in 240 ml of drink. I weighed 240 ml of drink and found its
    10·1 answer
  • Tiny water droplets in the air disperse the white light of the sun into a rainbow. What is the energy of a photon from the red p
    12·1 answer
  • Mad cow disease is caused by a prion. A prion is a malformed protein that is found in the brain tissue of infected cows, and exp
    7·1 answer
  • Fertilizer is sold in 100 pound bags labelled with the amount of nitrogen ( N), phosphoric acid ( P2O5), and potash ( K2O) prese
    15·1 answer
  • When 26.0 mL of 0.500 M H2SO4 is added to 26.0 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to
    8·1 answer
  • How many valence electrons are transferred from the calcium atom to iodine in the formation of the compound calcium iodide?
    6·1 answer
  • Which of the following examples accurately describes an object that is accelerating?
    6·2 answers
  • How would you describe the connection between the amount of energy a type of electromagnetic wave has and how that wave is used
    15·1 answer
  • How can the conductivity of a salt solution be decreased?
    5·1 answer
  • Cohesive substances repel one another.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!