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antoniya [11.8K]
3 years ago
6

Compare element factories to real factories

Chemistry
1 answer:
Nuetrik [128]3 years ago
8 0
One is real and one isn’t
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As the atomic number ___________(Increases/Decreases) within a period, the atomic radius _______(Increases/Decreases).
Alex777 [14]

Answer:

Atomic radius is the distance from the atom's nucleus to the outer edge of the electron cloud. In general, atomic radius decreases across a period and increases down a group.

Explanation: you should mark me brainliest

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Match the terms to their definition.
morpeh [17]

Answer:

2

Explanation:

3 0
3 years ago
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What is the empirical formula of a substance that contains 2.64 g of c, 0.444 g of h, and 7.04 g of o?
vitfil [10]

To calculate empirical formula, number of moles of different atoms calculated first:

Number of moles of Carbon , n=  

=\frac{Given mass of carbon}{Molar mass of carbon}

=\frac{2.64 g}{12.011 g mol^{-1}}

= 0.220 mol  

Number of moles H =\frac{Given mass of hydrogen}{Molar mass of hydrogen}

=\frac{0.444 g}{1.008 g mol^{-1}}

= 0.440 mol

Number of moles of oxygen =\frac{Given mass of oxygen}{Molar mass of oxygen}

=\frac{7.04 g}{15.999 g mol^{-1}}

= 0.440 mol

Ratio of carbon

=\frac{0.220}{0.220}

= 1

Ratio of hydrogen

=\frac{0.440}{0.220}

= 2  

Ratio of oxygen

=\frac{0.440}{0.220}

= 2  

So, the empirical formula is CH₂O₂

5 0
4 years ago
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23. The reaction between solid sodium and iron(ill) oxide 15
Verdich [7]

Answer:

A. Limiting reactant

Explanation:

Mark me as a brainliest happy po ako sa pag sagot sana tama ako kung mali paki. Comment lang dito kasi solve ako ulit

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3 years ago
How are humans releasing carbon dioxide into the air?
Gekata [30.6K]

Answer: A minor but very important component of the atmosphere, carbon dioxide is released through natural processes such as respiration and volcano eruptions and through human activities such as deforestation, land use changes, and burning fossil fuels.

Explanation:

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4 years ago
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