If 3 newton's of force is pulling

Chemistry

1 answer:

Troyanec [42]3 years ago

5 0

A. There is no movement
Hope this helps

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What type of claim must be supported by scientifically valid evidence for it to be approved for use on a food label? A. Health c

Lelu [443]

Option A. Health claim

Health claim must be supported by scientifically valid evidence to be approved in using for food label.

This is also a food guide to all consumers the food content implied by manufacturers to their products.

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3 years ago

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You need 4.0 ounces of a steroid ointment. if there are 16 oz in 1 lb, how many grams of ointment does the pharmacist need to pr

Bond [772]

The given units are the units of masses which are interconvertable.

It is given that:

$1 lb = 16 oz$

Now, converting $kg to lb$ :

Since, $1 kg = 2.20462 lb$

So, $\frac{0.0625 lb}{1 oz}\times \frac{1 kg}{2.20462 lb}$

Now converting $kg to g$ :

Since, 1 kg = 1000 g

So, $\frac{0.0625 lb}{1 oz}\times \frac{1 kg}{2.20462 lb}\times \frac{1000 g}{1 kg} = 28.349 \frac{g}{oz}$

For $4 oz$ :

$28.349\frac{g}{oz} \times 4 oz = 113.396 g$

Thus, $113.396 g$ of ointment needed to be prepared by the pharmacist.

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3 years ago

A 46.2 mL,0.568 M calcium nitrate solution is mixed with 80.5mL of 1.396M calcium nitrate solution.Calculate tge concentration o

Ne4ueva [31]

Answer:

1.09 M

Explanation:

Let's define the equation that will be used to calculate the final concentration of the resultant calcium nitrate solution. In order to calculate it, we need to find the total number of moles of calcium nitrate and divide by the total volume of the resultant solution:

$c=\frac{n}{V}$

This equation firstly helps us find the number of moles of calcium nitrate. Multiplying molarity by volume will yield the moles. Adding the moles from the first component to the second component will provide us with the total number of moles of calcium nitrate:

$n_{Ca(NO_3)_2}=46.2 mL\cdot0.568 M+80.5 mL\cdot1.396 M=138.62 mmol$