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Novay_Z [31]
4 years ago
14

Help! Describe what causes a change of state in matter and provide an example.

Chemistry
1 answer:
azamat4 years ago
6 0
Tell me what u know so far and ill help u with the rest
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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
Multiple Choice Question
valina [46]

Answer:

Explanation:

i would say not d im not fully sure but id say c

6 0
3 years ago
a 9.84 ounces ingot of unknown metal is heated from 73.2 degrees fahrenheit - 191.2 degrees fahrenheit this requires 3.912 calor
Gekata [30.6K]

The SI unit of specific heat is J per gram per degree Celsius. Thus it follows that specific heat could be calculated in this way:

Specific Heat = Energy / (mass x change in temperature)

Thus,

Specific Heat = 3.912 cal / (9.84 oz x (191.2 ˚F – 73.2 ˚F))

Specific Heat = 3.369 x 10^-3 cal/oz-˚F

6 0
4 years ago
Gravity is dependent on which of the two factors?
lianna [129]

Answer:

mass and weight

Explanation:

because ur weight pulls you to the center of the earth

6 0
3 years ago
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A chemical change involves the formation or the breaking of bonds. true or false
dusya [7]
The answer would be true.
5 0
3 years ago
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