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bogdanovich [222]
3 years ago
9

A heavy textbook and a QOD journal sit on the edge of your desk. Which has more gravitational potential energy?

Chemistry
1 answer:
fenix001 [56]3 years ago
4 0
The textbook Would most likely have more gravitational potential energy because it is heavier. Things that are heavier have a larger gravitational pull and are pulled to the earth faster
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Which of the following is the correct Lewis structure diagram for Neon? The letters Ne with eight dots The letters Ne with seven
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Answer:

Ne with eight dots

Explanation:

On the periodic table, Neon is in group 8A. The group can be used to determine the number of valence electrons.

The dots in the Lewis structure diagram represent the number of valence electrons.

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What is the main purpose of a leaf
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What are Properties that can be recognized only when substances react or do not react
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Chemical properties can be recognized only when substances react or do not react chemically with one another, that is, when they undergo a change in composition. A chemical property of one substance usually involves its ability to react or not react with another specific substance.

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Balance this equation. If a coefficient of "1" is required, choose "blank" for that box. C2H6 + O2 → CO2 + H2O
fenix001 [56]
Step 1: Write the unbalanced equation,

                                 C₂H₆  +  O₂    →    CO₂  +  H₂<span>O

There are 2 C at left hand side and 1 carbon at right hand side. So, multiply CO</span>₂ by 2 to balance C atoms at both side. So,

                                 C₂H₆  +  O₂    →   2 CO₂  +  H₂O

Now, count number of H atoms at both sides. There are 6 H atoms at left hand side and 2 at right hand side. Multiply H₂O by 3 to balance H atoms.


                                 C₂H₆  +  O₂    →   2 CO₂  +  3 H₂O

At last, balance O atoms. There are 2 O atoms at left hand side and 3 O atoms at right hand side. Multiply O₂ with 1.5 (i.e. 3/2) to balance O atoms. i.e.

                                 C₂H₆  +  3/2 O₂    →   2 CO₂  +  3 H₂O

Hence, the equation is balanced. If you want to make equation fraction free then multiply all equation with 2. i.e.

                           ( C₂H₆  +  3/2 O₂    →   2 CO₂  +  3 H₂O ) × 2

                                2 C₂H₆  +  3 O₂    →   4 CO₂  +  6 H₂O
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How does one recognize a redox reaction?
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Answer:

A.

Explanation:

A redox reaction is a reaction when oxidation states (or numbers) change during reaction.

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