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Sloan [31]
3 years ago
14

The most negative electron affinity is most likely associated with which type of atoms?

Chemistry
1 answer:
Papessa [141]3 years ago
4 0
Protons I think hope that helps
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What occurs during a chemical reaction? *
Romashka [77]

Answer:

c. Atoms of two or more elements bond together

Explanation:

a chemical reactions forms products ( new substances); where it rearranges themselves to form new bonds.

7 0
3 years ago
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How does a phase change from solid to liquid occur in a substance?
Alex

Answer:

see below

Explanation:

1. Heat energy is added to the substance, weakening the electrical attraction between molecules.

2. Both the melting point and boiling point are lower.

3. dipole

4. Water and ethanol have different molecular structures.

5. The lone pairs of electrons in the oxygen atom causes the molecule to be bent; the oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.

[quizlet: captncrun]

4 0
3 years ago
An excess of oxygen reacts with 451.4 g of lead, forming 374.7 g of lead(II) oxide. Calculate the percent yield of the reaction.
Stels [109]

Answer: The percent yield of the reaction is 77.0 %

Explanation:

2Pb+O_2\rightarrow 2PbO

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

\text{Number of moles of lead}=\frac{451.4g}{207.2g/mol}=2.18moles

\text{Number of moles of lead oxide}=\frac{374.7g}{223.2g/mol}=1.68moles

According to stoichiometry:

2 moles of Pb produces = 2 moles of PbO_2

2.18 moles of Pb is produced by=\frac{2}{2}\times 2.18=2.18moles of PbO_2

Mass of PbO_2 =moles\times {\text {Molar mass}}=2.18\times 223.2g/mol=486.6

percent yield =\frac{374.7g}{486.6g}\times 100=77.0\%

3 0
3 years ago
You have ice cubes in your freezer at home. The ice cubes melt into water. This type of change is called a... O a. nuclear chang
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B ) its a physical change
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I just got this question and it was lipids sorry if i’m wrong
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