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MariettaO [177]
2 years ago
10

Which of the following pairs of substances can be broken down chemically? 

Chemistry
1 answer:
Ket [755]2 years ago
5 0
Methane and water because they are both compounds
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Which of the following is generally FALSE? Group of answer choices Elements in the same group have the same valence electron con
Whitepunk [10]

Answer: Option (c) is the correct answer.

Explanation:

Generally, when we move from top to bottom in a group then there occur increase in the number of electrons due to which there will also occur increase in the number of shells.

As atomic size is the distance between the nucleus and valence shell of an atom. Hence, more is the number of shells present in an atom more will be its atomic radius.

Thus, we can conclude that the statement atomic radius of elements in a group decreases as you go from top to bottom, is generally FALSE.

3 0
3 years ago
Does anyone know what convection,conduction,radiation??
saw5 [17]

Answer:

Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission.

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3 years ago
Which statement supports the claim that the continental crust was once joined together as one supercontinent, Pangaea?
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Answer:

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5 0
3 years ago
How many moles of Ca atoms are in 1 mol of CaSO4?
Galina-37 [17]

Answer:

6.02 x 10²³ atoms

Explanation:

Given parameters:

Number of moles CaSO₄ = 1 mole

Unknown:

Number of Ca atoms in the given compound = ?

Solution:

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          CaSO₄

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Now;

   1 mole of any substance contains 6.02 x 10²³ atoms

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The model cannot show how light bends.

Explanation:

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