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2 years ago

Circle the letter of each chemical equation that is balanced

Chemistry

2 answers:

Dahasolnce [82]2 years ago

7 0

Just choice D.
If you find the number of atoms of each element, you will find that only choice D has the same amounts on each side of the equation.

Alenkasestr [34]2 years ago

5 0

Explanation:

3rd century fox news has been in the past year and it is a different person and you know what to do with a 3rd century fox news has been in the past year and it is a different person and you know what to do with a different person and you know what to do with a different person and you know what to do with a different person and you

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An exothermic reaction __________ energy.

qwelly [4]

It releases energy (what I am saying in other words that "D. Releases" would be your answer)

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3 years ago

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Which type of combination is a mixture?

DochEvi [55]

Answer:

C. physical

Explanation:

A mixture is a physical combination. Mixtures are combinations of compounds and molecules without any chemical reaction taking place.

Mixtures have the following properties:

They have an indefinite composition i.e they consist of two or more elements and or compounds in any proportion by mass
Their constituents retains their identities i. e physical property is retained.
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They are easily separated into constituents by physical methods

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2 years ago

Why are we pulled to the center of the Earth and not into the much larger sun?

katrin [286]

Answer:

The sun's gravity pulls on the earth, and the earth pulls back on the sun at the same time. This is why the center of the solar system is not the center of the sun. As one gravitational body gets bigger than the other, it circles closer to the center of the system (shown in red).

Explanation:

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2 years ago

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What reaction might we use to synthesize nickel sulfate,niso4? Write equations for acid base neutralization. Include states in y

il63 [147K]

Answer:

Here's what I get

Explanation:

1. Nickel sulfate

base + acid ⟶ salt + water

NiSO₄ is a salt of the base Ni(OH)₂ and the acid sulfuric acid.

Hydroxides of transition metals are insoluble; most sulfates are soluble.

$\underbrace{\hbox{Ni(OH)$_{2}$(s)}}_{\hbox{base}} + \underbrace{\hbox{H$_{2}$SO$_{4}$(aq)}}_{\hbox{acid}} \longrightarrow \, \underbrace{\hbox{NiSO$_{4}$(aq)}}_{\hbox{salt}} + \underbrace{\hbox{2H$_{2}$O(l)}}_{\hbox{water}}$

2. Carbonate + acid

Most carbonates are insoluble.

They react with acids to form carbonic acid (H₂CO₃), which decomposes into water and carbon dioxide.

$\rm NiCO_{3}(s) + H_{2}SO_{4}(aq) \longrightarrow \, NiSO_{4}(aq) + H_{2}O(l) + CO_{2}(g)$

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3 years ago

An oven that cooks by cycling warm air through the bottom and out the top which heat transfer

koban [17]

Answer:

This is an example of convection

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2 years ago