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Kobotan [32]
3 years ago
11

What are periods and groups on the periodic table?​

Chemistry
2 answers:
ivanzaharov [21]3 years ago
8 0

Answer: The vertical columns on the periodic table are called groups or families because of their similar chemical behaviour. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

Explanation:

mezya [45]3 years ago
4 0

Answer:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

Explanation:

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<u>Answer:</u> This therapy is available for 15 days.

<u>Explanation:</u>

We are given:

Oral solution dosage = 75 mg/5 mL

To calculate the volume of oral situation for single dose per, we use unitary method:

The volume required for 75 mg of solution is 5 mL

So, the volume required for 300 mg of solution will be = \frac{5mL}{75mg}\times 300mg=20mL

The total volume of the ranitidine bottle = 300 mL

To calculate the number of days, we divide the total volume of the bottle by the volume of dose taken per night, we get:

\text{Number of days}=\frac{\text{Total volume}}{\text{Volume of dose taken per night}}=\frac{300mL}{20mL}=15

Hence, this therapy is available for 15 days.

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