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melomori [17]
3 years ago
13

Disadvantages of modern periodic table?​

Chemistry
1 answer:
ira [324]3 years ago
4 0

Answer:

It has its elements with mass numbers phrased in many decimal places, it requires one to round off to get the actual value.

The atomic numbers of some elements such as Protonium were just guessed.

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How many total atoms are there in one molecule of C145H293O168?
nasty-shy [4]

Answer:

606 atoms

Explanation:

Add the numbers    145 + 293 + 168

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2 years ago
Which of the following is a chemical property of water? It ___________.
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Drag each positive ion to bond it with a negative ion to form the neutral ionic compound indicated.
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3 years ago
Iodine-131 decays with a half-life of 8.02
dlinn [17]
Radioactive material undergoes 1st order decay kinetics.

For 1st order decay, half life = 0.693/k

where k = rate constant

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Now, for 1st order reaction,
k = \frac{2.303}{t} X log \frac{initial.conc}{final.conc}

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3 0
3 years ago
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