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const2013 [10]
3 years ago
14

Yo can someone help me answer this

Chemistry
1 answer:
Alex787 [66]3 years ago
7 0

Answer:

D

Explanation:

You need both, independant and dependant variables for a hypothesis.

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Consider the covalent bonding in the molecule acetylene [ah-SET-ihl-een], and assume that the carbon-carbon axis is the x-axis.
kirza4 [7]

Answer:

2py and 2pz orbitals

Explanation:

Each carbon atom still has two half-filled 2py and 2pz orbitals, which are perpendicular both to each other and to the line formed by the sigma bonds. These two perpendicular pairs of p orbitals form two pi bonds between the carbons, resulting in a triple bond overall (one sigma bond plus two pi bonds).

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A sample of metal has a mass of 5. 2 g and absorbs 20. 0 j of energy as it is heated from 30. 0°c to 40. 0°c. What is the identi
kiruha [24]

The identity of the metal is copper.

<h3>What is specific heat?</h3>

The amount of energy needed to raise the temperature of one gram of a substance by one degree Celsius.

Using the formula of specific heat

H = mcdT

Where, H = Heat absorbed

m = mass of the metal

c = specific heat capacity of the metal

dT = temperature change

Putting the values in the equation

20 J = 0.0052 Kg × c × ( 40.0°C - 30.0°C)

c = 20 J/0.0052 Kg × ( 40.0°C - 30.0°C)

c = 385 JKg-1°C-1

Thus, the metal is copper.

Learn more about specific heat

brainly.com/question/11297584

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Answer:

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Explanation:

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which statement is true about kinetic molecular theory?. . a. the size of the particle is large compared to the volume. b. the c
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The statement of letter B, the collisions of particles with one another is completey elastic, is true about Kinetic Molecular Theory. Elastic collisions means that there is no energy transfer between the particles.
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