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iren [92.7K]
3 years ago
7

What does a periodic trend look like on the periodic table?

Chemistry
2 answers:
Alexxandr [17]3 years ago
7 0
Periodic table is arranged and organized with special pattern or regular variation of the properties of an element with increasing atomic number, this is called periodic trend. So periodic trend look like a repeating pattern on the periodic table.
Some of the trends are density, atomic radius,melting point, boiling point, electronegativity etc.
tresset_1 [31]3 years ago
4 0

A periodic trend on the periodic table is represented by a repeating pattern


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Calculate the number of grams contained in each of the following number of moles. Report your answer with the appropriate number
Debora [2.8K]

<u>Answers:</u>

a. 131.85 grams

b. 134.69 grams

To calculate the number of grams in the number of moles given for each compound, consider the formula:

<em>Moles = No. of grams / molar mass</em>

Therefore, to find the gram it will become:

<em>No. of grams = moles x molar mass</em>

a.  0.410 mol of NaCl (sodium chloride)

Molar mass of NaCl = (286.14 + 35.45) = 321.59

No. of grams = moles x molar mass

No. of grams = 0.410 x 321.59 = 131.85 grams

b. 4.80 mol of C2H4 (ethylene)

Molar mass of C2H4 = (12.01 x 2) + (1.01 x 4) = 28.06

No. of grams = moles x molar mass

No. of grams = 4.80 x 28.06 = 134.69 grams

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3 years ago
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inysia [295]

Answer:

A) brittle

Explanation:

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3 years ago
A box of jello has a mass of 250 g. How many boxes must be bought to have 1 Kg of jello? *
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Number of boxes = 4

Explanation:

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earnstyle [38]

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