3 years ago

What is the relationship between the electronic configuration, group and period numbers?

1 answer:

6 0

Answer: the number of circles in the electronic configuration of an element is represented in the periodic table as the period number that element is situated in. the number of electrons in the outermost shell of an element is represented in the periodic table as the group number that element is situated in.

Explanation: hope it helps :)

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Stells [14]

Answer:

40%

Explanation:

Calculate the percent of the mass that is carbon:

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3 years ago

An unknown solution has a pH of 8. How would you classify this solution?

ratelena [41]

The correct answer is B) Basic. Hope this helps.

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3 years ago

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Calculate the enthalpy of the formation of butane, C4H10, using the balanced chemical equation and the standard value below:

zavuch27 [327]

Answer:

+125.4 KJmol-1

Explanation:

∆H C4H10(g) = -2877.6kJ/mol

∆H C(s)=-393.5kJ/mol

∆H H2(g) = -285.8

∆H reaction= ∆Hproducts - ∆H reactants

∆H reaction= (-2877.6kJ/mol) - [4(-393.5kJ/mol) +5(-285.8)]

∆H reaction= +125.4 KJmol-1

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2 years ago

1. Una onda tiene una longitud de onda de 2 metros y una frecuencia de 1.5 Hz. ¿Cuál es su velocidad?

IrinaVladis [17]

Answer:

3 m/s

Explanation:

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usando la fórmula velocidad = frecuencia multiplicada por la longitud de onda.

v = (1.5)(2)

v= 3 m/s

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3 years ago

What are the atomic numbers for sodium,iron and sulfur???

Nastasia [14]

Answer: sodium-11 iron-26 sulfur-16

Explanation:

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2 years ago

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