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adelina 88 [10]
4 years ago
6

I'm doing this Forensics class, Someone please help!

Chemistry
1 answer:
alexgriva [62]4 years ago
3 0
<span>pharmacokinetics

       This question is simply a matter of knowing the definition of terms being used in your class. So let's look at the 4 options and see what makes sense. spectrometry * This is the determination of elements based upon the light spectrum associated with the elements. It can be either an emission spectrum you get by energizing the substance under test, or an absorption spectrum to see what wavelengths the substance absorbs. But in either case, this doesn't make sense in the statement, so it's a wrong answer. LD50 * This terms means "Lethal Dose 50%" which is the amount of the substance needed such that half of the creatures that receive that dose die. In the context of the statement, this doesn't make sense, so it's a wrong answer. pharmacokinetics * This is the study of how drugs move through the body and are metabolized. This sounds like something that makes sense for the statement in the question, so it's most likely the correct answer. Let's see what the next choice is. chromatography * This is a laboratory method of separating substances using differential rates of diffusion. This doesn't make sense given the statement in the question, so it's a wrong choice. So of the 4 available choices, 3 of them do not make sense given the statement in question and the only one that does make sense is "pharmacokinetics"</span>
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A student is given an antacid tablet that weighed 5.6832 g. The tablet was crushed and 4.3628 g of he antacid was added to 200 m
SSSSS [86.1K]

Answer:

a) 8.33 ml of the original stomach acid is neutralized

b) 191.67 ml of the stomach acid was neutralized

c)  249.68 ml acid would be neutralized by the original tablet

Explanation:

a) how much of the stomach acid had been neutralized in the 25 mL sample wich was titrated?

25.5 ml of a NaOH solution is equivalent to 25.00 ml of the original stomach acid

8.5 ml NaOH * (25.00 ml original stomach acid / 25.5 ml NaOH) = 8.33 ml original stomach acid

b) how much stomach acid was neutralized y the 4.3628 g tablet?

It takes 8.5 ml NaOH to neutralize 8.33 ml original acid (this is the answer for question 1)

This means the antacid neutralized = 200 ml - 8.33 ml = 191.67 ml

c) how much stomach acid would have been neutralized by the original 5.6832 g tablet

4.3628 g antacid is equivalent to 191.67 ml acid  ( this is the answer for question 2)

5.6832g antacid * (191.67 ml acid / 4.3628 g antacid) = 249.68 ml acid

3 0
3 years ago
Read 2 more answers
In general, if the temperature of a chemical reaction is increased, the reaction rate
kaheart [24]
In general, if the temperature of a chemical reaction is increased, the reaction rate increases as well. The correct answer is A.
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3 years ago
Consider the following reaction: 2 H2(g) + 2 NO(g) → 2 H2O(g) + N2(g) If the concentration of NO changed from 0.100 M to 0.025 M
Wewaii [24]

Answer: The average rate of the reaction during this time interval is, 0.005 M/s

Explanation:

The given chemical reaction is:

2H_2(g)+2NO(g)\rightarrow 2H_2O(g)+N_2(g)

The expression will be:

\text{Average rate of reaction}=\frac{C_2-C_1}{t_2-t_1}

where,

C_2 = final concentration of NO = 0.025 M

C_1 = initial concentration of NO = 0.100 M

t_2 = final time = 15 minutes

t_1 = initial time = 0 minutes

Putting values in above equation, we get:

\text{Average rate of reaction}=\frac{0.025-0.100}{15-0}

\text{Average rate of reaction}=0.005M/s

Hence, the average rate of the reaction during this time interval is, 0.005 M/s

6 0
3 years ago
A blacksmith quenches a horseshoe by dropping the red-hot iron object into a bucket of cold water. How will the blacksmith know
ddd [48]

when it is in the water it will make a hissing sound, and when it is not not making the sound they know it can pulled out of the water. hope this helps :)

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In radioactive materials a parent atom decays into a daughter, such as uranium-238 decaying into lead-206. For some radioisotope
Lunna [17]

Answer:

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Explanation:

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