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3 years ago

_____ numbers are based on the distribution of electrons in a molecule.

Chemistry

1 answer:

leva [86]3 years ago

8 0

Answer:

oxidation

Explanation:

oxidation number are based on the distribution of electrons in a molecule

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A 38-lb child is prescribed acyclovir for chicken pox in an amount of 80 mg/ kg body weight per day to be divided in four doses

Svetach [21]

Answer:

$\large \boxed{\text{Two tablets per day; half a tablet per dose}}$

Explanation:

1. Convert pounds to kilograms

$\text{Body weight} = \text{38 lb} \times \dfrac{\text{1 kg}}{\text{2.205 kg}} = \text{17.2 kg}$

2. Convert kilograms of body weight to milligrams of acyclovir

$\text{Mass of acyclovir} = \text{17.2 kg} \times \dfrac{\text{80 mg acyclovir}}{\text{1 kg}} = \text{1380 mg acyclovir }$

3. Convert milligrams of acyclovir to number of tablets

$\text{No. of tablets} = \text{1380 mg} \times \dfrac{\text{1 tablet}}{\text{700 mg}} = \textbf{2 tablets}$

4. Calculate the tablets per dose

The child must receive two tablets in four doses.

$\text{Tablets per dose} = \dfrac{\text{2 tablets}}{\text{4 doses}} = \textbf{0.5 tablets per dose}\\\\\text{The child must receive $\large \boxed{\textbf{two tablets per day and half a tablet per dose}}$}$

5 0

3 years ago

A sample of gas has an initial volume of 20 L and an initial pressure of 2.5 atm. If the pressure changes to 3.1 atm, what is th

Studentka2010 [4]

The new volume is mathematically given as

V2= 16.12 L

<h3>What is the new volume?</h3>

Question Parameters:

A sample of gas has an initial volume of 20 L

and an initial pressure of 2.5 atm.

If the pressure changes to 3.1 atm

Generally, the equation for Pressure is mathematically given as

P1V1 = P2 V2

2.5 * 20 = 3.1 * V2

V2 = 50/3.1

V2= 16.12 L

For more information on volume

brainly.com/question/1578538

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1 year ago

What acid and base form Ca3(PO4)2

olya-2409 [2.1K]

Base is Ca(OH)2.
Acid is H3PO4.

First part of the salt comes from base,
second par comes from the acid.

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3 years ago

Which statement correctly pairs the climate factor with its effect on temperature? *

allochka39001 [22]

Answer:

A region on top of a mountain is cooler than at the base.

Explanation:

Pressure and temperature have direct relationship with each other. With the decrease in pressure, the temperature decreases and vice versa. When the air rises in the atmosphere, the pressure starts to fall. The low pressure at the peak of the mountains tends to cause the fall in temperature. It is because of this reason that it is cooler at the top of the mountain while the temperature is less cool in the foothills.

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2 years ago

Why is it important to learn about chemical reactions?

Eduardwww [97]

Answer:

Well they help us understand the properties of matter of course!

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2 years ago

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