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2 years ago

Question 15 (5 points)

1 answer:

6 0

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

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From the list of substances, identify each as a strong acid, strong base, or neither a strong acid nor a strong baseDrag the app

Veseljchak [2.6K]

Answer:

Answer is in the explanation

Explanation:

All acids that dissociates completely in water are considered strong acids. In the same way, bases that dissociates completely in water are strong bases. All hydroxides made from alkali metals and heavier alkali earth metals are strong bases.

HNO3 dissociates completely in water: STRONG ACID.

HCl dissociates completely in water. STRONG ACID.

NaCl is a salt. Neither a strong acid nor a strong base.

Ca(OH)2. Heavy alkaline earth metal. STRONG BASE.

CH3COOH an acid that doesn't dissociate completely in water. Neither a strong acid nor a strong base.

CH3NH2 is a weak base that doesn't dissociate completely in water. Neither a strong acid nor a strong base.

CH3OH. Methanol is an alcohol. Neither a strong acid nor a strong base.

HF is a weak acid; doesn't dissociate completely in water. Neither a strong acid nor a strong base.

RbOH. Is an hydroxide made from alkali metal. STRONG BASE.

3 0

3 years ago

What is the hardest things in the world

german

Answer:

Diamond is the hardest things in the world

4 0

3 years ago

The electron affinities of the elements from aluminum to chlorine are -44, -120, -74, -200.4, and -384.7 kJ/mol, respectively. R

Sidana [21]

Answer:

Electron affinity increases when moving left to right of the period.

Explanation:

Electron affinity is the amount of energy released when an isolated gaseous atom accepts electron to form the corresponding anion.

Trend of electron affinity across the period:-

Across the period, the electron affinity increases as there is an increase in effective nuclear charge.
Due to this, there is more force of attraction between the nucleus and the valence electrons when moving left to right in a period.
Thus, more amount of energy is released when an electron is being gained in the neutral atom to form anion.
Thus, electron affinity increases when moving left to right of the period.

Thus,

Al : -44 kJ/mol

Si : -120 kJ/mol

P : -74 kJ/mol

S : -200.4 kJ/mol

Cl : -384.7 kJ/mol

Al, Si, P, S, Cl are the members of third period and thus, left to right, the electron affinities of the elements increases as can be seen from the literature values.

3 0

4 years ago

Calculate the change in the standard entropy of the system, delta s degree for the synthesis of ammonia from N_2(g) and H_2(g) a

Svet_ta [14]

Answer:

$\Delta S^{0}$ for the reaction is -198.762 J/K

Explanation:

$N_{2}(g)+3H_{2}(g)\rightarrow 2NH_{3}(g)$

Standard change in entropy for the system ( $\Delta S^{0}$ ) is given by-

$\Delta S^{0}=[2moles\times S^{0}(NH_{3})_{g}]-[1mole\times S^{0}(N_{2})_{g}]-[3\times S^{0}(H_{2})_{g}]$

where $S^{0}$ represents standard entropy.

Here $S^{0}(NH_{3})_{g}=192.45J/(K.mol)$ , $S^{0}(N_{2})_{g}=191.61J/(K.mol)$ and $S^{0}(H_{2})_{g}=130.684J/(K.mol)$

So, $\Delta S^{0}=[2\times 192.45]-[1\times 191.61]-[3\times 130.684]J/K=-198.762J/K$

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3 years ago

What energy conversion takes place<br> as a leaf falls to the ground?

Zigmanuir [339]

Answer:

<h3>The answer is kinetic energy</h3>

Explanation:

<h2>The answer is Kinetic Energy because take for an example, When an apple falls from the tree to the ground, its energy of position is then made into kinetic energy, the energy of motion, as it falls to the ground. </h2>

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4 0

3 years ago

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