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
vichka [17]
3 years ago
14

Which of the following was originally a tenet of Dalton's atomic theory, but had to be revised about a century ago?

Chemistry
1 answer:
enot [183]3 years ago
6 0

Answer:

Atoms of different elements can combine with one another in simple whole number ratios

You might be interested in
Which of the following most influenced the changing nature of classification systems
Lyrx [107]
Hope I helped you enjoy your day

5 0
2 years ago
Read 2 more answers
Which of the following describes a property of water that helps sustain marine life forms?
Mariana [72]

Answer:

Open spaces in water's solid structure makes its solid state less dense than its liquid state.

Explanation:

  • Water unlike other liquids is special. It contracts when cooled, down to a temperature of 4°C but thereafter begins to expand as it reaches 0°C and turns into ice.
  • This property is useful for the preservation of marine life in very cold temperatures. During winter, the surface water in water lakes and rivers starts cooling. Upon reaching the temperature of 4°C, the surface water descends to the bottom as it denser.
  • This help in the maintenance of temperature of the water at the bottom at 4°C. It is in this layer that marine life is sustained.
4 0
3 years ago
The majority of energy used in industrialized countries is produced using renewable resources.
vaieri [72.5K]

Answer:

The answer is FALSE

Explanation:

I took the test and it was false,

also if it was true then in industrialized countries would be more eco-friendly and there wouldn't be a huge hole in our ozone layer. and no more wars over oil.

7 0
3 years ago
The size (radius) of an oxygen molecule is about 2.0 ×10−10m. Make a rough estimate of the pressure at which the finite volume o
belka [17]

Answer:

Explanation:

We can calculate the volume  of the oxygen molecule as the radius of oxygen molecule is given as 2×10⁻¹⁰m.

We know that volume=4/3×πr³

volume =4/3×π(2.0×10⁻¹⁰m)³

volume=33.40×10⁻³⁰m³

Volume of oxygen molecule=33.40×10⁻³⁰m³

we know the ideal gas equation as:

PV=nRT

k=R/Na

R=k×Na

PV=n×k×Na×T

n×Na=N

PV=Nkt

p is pressure of gas

v is volume  of gas

T is temperature of gas

N is numbetr of molecules

Na is avagadros number

k is boltzmann constant =1.38×10⁻²³J/K

R is real gas constant

So to calculate pressure using the  formula;

PV=NkT

P=NkT/V

Since there is only one molecule of oxygen so N=1

P=[1×1.38×10⁻²³J/K×300]/[33.40×10⁻³⁰m³

p=12.39×10⁷Pascal

8 0
3 years ago
What are the starting materials in a chemical reaction called?
Irina18 [472]
A chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.
8 0
3 years ago
Other questions:
  • A piston confines 0.200 mol Ne(g) in 1.20 at 25 degree C. Two experiments are performed. (a) The gas is allowed to expand throug
    13·1 answer
  • The interactive forces between particles are... A) less effective in solids than in liquids B) more effective in solids than in
    9·1 answer
  • How many mole are there in carbon dioxide
    10·2 answers
  • The properties of a compound ____________________ those of its elements.
    10·1 answer
  • Which of the following are features of the electron cloud model of an atom?
    6·1 answer
  • Which material typically make up the A horizon in soil
    7·1 answer
  • How to test for ionic and covalent substances
    14·1 answer
  • Calculate the pressure in atmospheres of O2 gas at 35 degrees Celsius. It is in a .5 liter container
    14·1 answer
  • The molecular mass of air, at standard pressure and temperature, is approximately 28.97 g/mol. Calculate the mass of 3.33 moles
    10·1 answer
  • Summarize at least three steps needed to carry out Galileo's famous experiment to determine whether heavier objects
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!