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rodikova [14]
3 years ago
13

What reason best explains why metals are ductile instead of brittle

Chemistry
1 answer:
Aliun [14]3 years ago
7 0
Metals are made up of layers of positively charged kernals so when we hit it it slides over each other and keep on expanding
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What is the rate of effusion of methane, CH₄, relative to the rate of effusion of acetylene, C₂H₂?​
just olya [345]

Answer:

1.274.

Explanation:

  • Thomas Graham found that, at a constant  temperature and pressure the rates of effusion  of various gases are inversely proportional to  the square root of their masses.

<em>∨ ∝ 1/√M.</em>

where, ∨ is the rate of diffusion of the gas.

M is the molar mass of the gas.

<em>∨₁/∨₂ = √(M₂/M₁)</em>

∨₁ is the rate of effusion of the methane.

∨₂ is the rate of effusion of acetylene gas.

M₁ is the molar mass of methane (M₁ = 16.0 g/mol).

M₂ is the molar mass of acetylene (M₂ = 26.0 g/mol).

<em>∴ The rate of effusion of methane, CH₄, relative to the rate of effusion of acetylene, C₂H₂ = ∨₁/∨₂ = √(M₂/M₁) </em>= √(26.0 g/mol)/(16.0 g/mol) = <em>1.274.</em>

6 0
4 years ago
Which statement best describes comparative and descriptive investigations?
olasank [31]

Answer:

they both include a question, procedure and conclusion.

Explanation:

7 0
3 years ago
Can you guys help me fill out the table?
TEA [102]

Explanation:

Scientist                   Evidence                                 Model

Dalton                        Gases                       indivisible, solid and spheres

J.J Thomson          Deflected beam        Negative charges evenly scattered

                                                                  through positively charged mass of

                                                                  matter.

Rutherford     Deflection of alpha            atomic model

                       particles passing                

                       through the gold foil              

The emboldened words are the answer.

  • John Dalton proposed the first model of the atoms by his works on gases. He postulated the Dalton's law of partial pressure.
  • He suggested that gases are made of tiny particles called atoms.

  • J.J Thomson proposed the plum pudding model of the atom in which the charges are evenly scattered through the positively charged mass of matter.

  • The gold foil experiment by Rutherford brought the atomic model of the atoms in the front-light.
  • The model suggests a small positively charged center which the mass of the atom.
  • The outer space is occupied by the electrons.

Learn more:

Rutherford brainly.com/question/1859083

#learnwithBrainly

6 0
3 years ago
What body system assists the respiratory system by pulling the rib cage down to allow air toflow in?
victus00 [196]
The body system is the diaphragm
5 0
3 years ago
Read 2 more answers
Given the following reaction:
babunello [35]

Answer:

1234.0

Explanation:

7 0
3 years ago
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