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2 years ago

Help me with homework.

Chemistry

1 answer:

andrey2020 [161]2 years ago

7 0

The chemical equation is said to be balanced if the number of atoms in the reactants and products is the same

<h3>Further explanation</h3>

Equation balanced ⇒ total number of atoms in reactants(on the left)= total number of atoms in products(on the right)

H₂+O₂---> H₂O

Reactants : H₂, O₂

Products : H₂O

not balanced

H₂O₂ ---> H₂O+O₂

Reactants : H₂O₂

Products : H₂O, O₂

not balanced

Na+O₂ ---> Na₂O

Reactants : Na, O₂

Products : Na₂O

not balanced

N₂+H₂ ---> NH₃

Reactants : N₂, H₂

Products : NH₃

not balanced

P₄+O₂---> P₄O₁₀

Reactants : P₄, O₂

Products : P₄O₁₀

not balanced

Fe+H₂O ----> Fe₃O₄ + H₂

Reactants : Fe, H₂O

Products : Fe₃O₄

not balanced

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A precipitate is a solid that sometimes forms when two liquids combine. A true B False

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<h2>Question:</h2>

A precipitate is a solid that sometimes forms when two liquids combine.

<h2>Answer:</h2>

A. True 

<h2>Explanation:</h2>

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2 years ago

Read 2 more answers

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Verdich [7]

The answer would be true

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2 years ago

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Below is an attachment containing the solution.

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3 years ago

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Answer:

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Explanation:

Firstly, don't let the word "pure" confuse you; this is pretty much irrelevant to the question.

The key to answering this question lies in "substance" and "more than one type of element chemically bonded."

Something you ought to memorize is that a substance is either an element or compound. Therefore, you can eliminate choices B./C.

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