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
Sliva [168]
2 years ago
13

Question 2 of 10

Chemistry
2 answers:
mart [117]2 years ago
8 0
D, democritus is the answer i got
Tpy6a [65]2 years ago
4 0

Answer:

The answer is D. Democritus

Explanation:

I did my research and it was Democritus' idea of the atom.

You might be interested in
What is kinetic energy related to?
Sunny_sXe [5.5K]

Answer:

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2.

Explanation:

i looked it up

5 0
3 years ago
Read 2 more answers
A hypothetical element consists of four isotopes. Use the information below to calculate the average atomic volume mass of the e
Keith_Richards [23]

Answer:

104.969 amu.

Explanation:

From the question given above, the following data were obtained:

Isotope A:

Mass of A = 107.977 amu

Abundance (A%) = 0.1620%

Isotope B:

Mass of B = 106.976 amu

Abundance (B%) = 1.568%

Isotope C:

Mass of C = 105.974 amu

Abundance (C%) = 47.14%

Isotope D:

Mass of D = 103.973 amu

Abundance (D%) = 51.13%

Average atomic mass =?

The average atomic mass of the element can be obtained as follow:

Average atomic mass = [(Mass of A × A%) /100] + [(Mass of B × B%) /100] + [(Mass of C × C%) /100] + [(Mass of D × D%) /100]

Average atomic mass = [(107.977 × 0.1620)/100] + [(106.976 × 1.568)/100] + [(105.974 × 47.14)/100] + [(103.973 × 51.13)/100]

= 0.175 + 1.677 + 49.956 + 53.161

= 104.969 amu

Therefore, the average atomic mass of the element is 104.969 amu.

8 0
3 years ago
Why is it not possible to directly count the number of particles in a mole?
SVETLANKA909090 [29]

Answer: because a mole is based on Avogrado's number,  which is 6.02 x 10²³ particles. It isn't possible to directly count that many particles at a time.

6 0
3 years ago
What is an energy conserved system ?
grin007 [14]

Answer: In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes.

Explanation:

internet

6 0
3 years ago
2 Polnts
Marina CMI [18]

Answer:

In chemistry, a symbol is an abbreviation for a chemical element. Symbols for chemical elements normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised.

Earlier symbols for chemical elements stem from classical Latin and Greek vocabulary. For some elements, this is because the material was known in ancient times, while for others, the name is a more recent invention. For example, Pb is the symbol for lead (plumbum in Latin); Hg is the symbol for mercury (hydrargyrum in Greek); and He is the symbol for helium (a new Latin name) because helium was not known in ancient Roman times. Some symbols come from other sources, like W for tungsten (Wolfram in German) which was not known in Roman times.

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • All the following involve an increase in entropy except O most endothermic reactions O sublimation O vaporization O combustion
    14·1 answer
  • How many moles is 24 grams of carbon?
    14·2 answers
  • What keeps the Earth's atmosphere from floating away?
    7·2 answers
  • Please explain this to me! Thank you! :)
    15·1 answer
  • Which compounds are most likely to have ionic bonds?
    13·2 answers
  • The mass of 3.45 L of hydrogen gas at SATP
    14·1 answer
  • How many moles are in 54g of sliver<br>​
    5·1 answer
  • What are 4 caristics of metals
    13·1 answer
  • The burning of fossil fuels, like coal, oil, and natural gas, DO NOT contribute to the presence of greenhouse gases in the atmos
    6·2 answers
  • Street lights are yellow/orange in color and not white. Based on your flame test data, what gaseous element is present in street
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!