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jeyben [28]
2 years ago
11

Which description of nitrogen-15 is correct?

Chemistry
1 answer:
VashaNatasha [74]2 years ago
8 0
The first one is correct cause first of all it's atomic number is 7 and second of all it's atomic mass is about 15
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4. When is distillation used?
Arlecino [84]

Answer:

Uses of Distillation

Distillation is used for many commercial processes, such as the production of gasoline, distilled water, xylene, alcohol, paraffin, kerosene, and many other liquids. Gas may be liquefied and separate. For example: nitrogen, oxygen, and argon are distilled from air.

3 0
3 years ago
Which of the following compounds can be considered a Lewis acid and not a Bronsted-Lowry acid? A acetylene hydronium ion © iron
8_murik_8 [283]

Answer:

iron (III) bromide

Explanation:

Bronsted-Lowry acid -

The species which can release proton , when dissolved in water .

Lewis acid -

The electron deficient species are called the Lewis acid .

From the question ,

The iron (III) bromide is a Lewis acid but not a Bronsted- Lowry acid because it can accept electrons pairs but cannot release proton .

The other options are -

The hydronium ion, the hydrochloric acid and the acetylene are Bronsted- Lowry acids because they can release proton .

And since ,  all the Bronsted- Lowry acids are Lewis acids .

7 0
3 years ago
Question 15 (5 points)
Vladimir [108]

This problem is providing us with the maximum mass of Imitrex a patient can get daily as 0.2 g. Also, the mass of a tablet is given as 25 mg so the number of tablets they get in a day is required. After the calculations, the result turns out to be 10 tablets.

<h3>Dimensional analysis:</h3>

In chemistry, dimensional analysis is used to calculate specific outcomes given useful information to do so. Despite not having specific formulas for every problem, one can come up with a feasible proportional-factor-based setup, in order to obtain the required.

In this case, since the mass per tablet is 25 mg, one can divide the maximum dosage by this mass per tablet, both in grams, to obtain the required number of tablets for a daily dosage:

25\frac{mg}{tablet}*\frac{1g}{1000mg}=0.025\frac{g}{tablet}  \\\\\#tablets=\frac{0.25g}{0.025\frac{g}{tablet}} \\\\\#tablets=10 tablets

Learn more about dimensional analysis: brainly.com/question/10874167

6 0
2 years ago
In what way did Galileo prove Aristotle
Andrei [34K]

According to the story, Galileo discovered through this experiment that the objects fell with the same acceleration, proving his prediction true, while at the same time disproving Aristotle's theory of gravity (which states that objects fall at speed proportional to their mass).


8 0
3 years ago
How do you spell hard water with 3 letters?
stiv31 [10]
The answer is ice. Nice brain teaser!

6 0
3 years ago
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