3 years ago

What periodic trends exist for electronegativity?

1 answer:

5 0

The highest electronegativity is in the elements in the top left corner of the periodic table, and the lowest in the bottom right corner. Therefore, traveling up or to the left across the periodic table will increase the electronegativity

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Josie created a Venn Diagram to determine the differences and similarities between weather and climate. PLSSS HELP I HAVE 15 MIN

DENIUS [597]

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Climate is long time intervals and weather is short time intervals

Explanation:

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3 years ago

A 52.0 mL portion of a 1.20 M solution is diluted to a total volume of 278 mL. A 139 mL portion of that solution is diluted by a

RoseWind [281]

Answer:

$C_3=0.125M$

Explanation:

Hello!

In this case, we can divide the problem in two steps:

1. Dilution to 278 mL: here, the initial concentration and volume are 1.20 M and 52.0 mL respectively, and a final volume of 278 mL, it means that the moles remain the same so we can write:

$V_1C_1=V_2C_2$

So we solve for C2:

$C_2=\frac{C_1V_1}{V_2}=\frac{52.0mL*1.20M}{278mL}\\\\C_2=0.224M$

2. Now, since 111 mL of water is added, we compute the final volume, V3:

$V_3=139+111=250mL$

So, the final concentration of the 139 mL portion is:

$C_3=\frac{139 mL*0.224M}{250mL}\\\\C_3=0.125M$

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3 years ago

Which describes a force in an unstable nucleus?

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The answer I’m sure it’s c

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Explain what happens to the particles in a substance during a physical change.

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The particals in a physical change alwayd stay the same, but for a chemical change that is the only time they will change. Not during a physical change

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2 years ago

Which reaction occurs at the anode in an electrochemical cell?

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Hey I’m not sure but I hope you have a good day today

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