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Makovka662 [10]
3 years ago
15

Find the answer using dimentional analysis. A child requires a 5 ml dose of medicine each day. How many days would a gallon of t

his medicine last?
Chemistry
1 answer:
vazorg [7]3 years ago
4 0

Conversion factor, 1 gallon = 4546.09 ml

Volume of stock solution = 1 gallon or 4546.09 ml

Dose required by the child = 5 ml/day

The number of days a gallon of this medicine last,

4546.09 ml x 1  day/ 5 ml = 909.218 days

Therefore, 1 gallon would last 909 days.

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Dmitry_Shevchenko [17]

Answer:

B. Decreasing the pressure applied to the gas molecules

Explanation:

According to Boyle's Law, the pressure of the gas is inversely proportional to the volume of the gas. So, the option B is correctly implied to it.

Other values such as Temperature, Number of molecules are inversely proportional to the volume of the gas.

Size of the gas molecules is negligible as compared to volume.

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Why are the outer-most electrons the only ones included in the electron dot<br> diagram?
kupik [55]

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Atoms with 5 or more valence electrons gain electrons forming a negative ion, or anion. why are outermost electrons only ones included in orbital filling diagram? they are the only ones involved in chemical reactions and bonding. ... 2s orbital is farther from the nucleus meaning it has more energy.

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8 0
3 years ago
97
alex41 [277]
B

Please help

Sorry I need 20 characters to submit this Answer that’s why I’m adding more words
5 0
3 years ago
A student mixes a 10.0 ml sample of 1.0 m naoh(aq) with a 10.0 ml sample of 1.0 m hcl(aq) in a polystyrene container. the temper
AleksAgata [21]
Hrxn = Q reaction / mol of reaction
mol of reaction = M * V = 10 * 1 = 10 mmol = 0.01 mol
Q water = m * C * (Tf - Ti)
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5 0
2 years ago
The quinine in tonic water shines a strange blue-white colour when lit with UV light. Explain what is happening here.
Alecsey [184]

Answer:

Here's what I get.

Explanation:

Quinine contains phosphors, substances that glow when they are hit with certain wavelengths of light.

The phosphors in quinine absorb UV light, which is invisible to our eyes.

Electrons in the phosphors absorb the UV energy and are excited to higher energy levels.

When the electrons drop back to lower energy levels, they emit some of this energy as a glowing blue visible light.  

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3 years ago
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