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mote1985 [20]
2 years ago
11

Why are alloys more useful than pure metals?

Chemistry
1 answer:
makkiz [27]2 years ago
7 0

Answer:

Alloys are more useful than pure metals because they contain multiple element containing at least one metal. Answer: The properties of alloys are often superior to their component elements. ... Metals are ductile while ionic crystals are not.

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_______ is the classic structural formula for all the addictive narcotics
oee [108]
The answer to this statement is codein. Codein, or 3-Methylmorphine by its IUPAC name, is an opiate used as pain reliever and suppressor of coughs. Its structural formula is shown in the picture. The patient's dosage of these narcotics should be strictly prescribed by the doctor. When patients take this, they feel euphoria, hence, they tend to crave for that feeling once it's gone. Too much dosage of this drug would lead to addiction. Examples of drugs with this structural formula are Cotabflu, Nalex AC, T-Koff and Pediatuss.

7 0
3 years ago
What percentage of the filtrate's water that enters bowman's capsule is reabsorbed into the blood? select one:
maksim [4K]
99% of the filtrate's water that enter bowman's capsule is reabsorbed into the blood. This is because the water and the salts contained in the filtrate are needed for optimal functioning of the body system. 
3 0
3 years ago
a student prepares a dilute solution of sodium hydroxidem, NaOH (aq), starting with 6 M sodium hydroxide. She then titrates a 1.
Serjik [45]

Answer:

M = 0.3077 M

Explanation:

As I said in the comments, you are missing the required volume of the base to react with the KHP. I found this on another site, and the volume it used was 21.84 mL.

Now, KHP is a compound often used to standarize NaOH or KOH solutions. This is because it contains a mole ratio of 1:1 with the base, so it's pretty easy to use and standarize any base.

Now, as we are using an acid base titration, the general expression to use when a acid base titration reach the equivalence point would be:

n₁ = n₂   (1)

This, of course, if the mole ratio is 1:1. In the case of KHP and NaOH it is.

Now, we also know that moles can be expressed like this:

n = M * V   (2)

And according to this, we are given the volume of base and the required mass of KHP. So, if we want to know the concentration of the base, we need to get the moles of the KHP, because in the equivalence point, these moles are the same moles of base.

The reported molar mass of KHP is 204.22 g/mol, so the moles are:

n = 1.372 / 204.22 = 6.72x10⁻³ moles

Now, we will use expression (2) to get the concentration of the diluted base:

n = M * V

M = n / V

M = 6.72x10⁻³ / 0.02184

M NaOH = 0.3077 M

This is the concentration of the dilute solution of NaOH

3 0
3 years ago
The efficiency is the number of times a machine multiplies the input force <br> true or false
OlgaM077 [116]

Answer:

may be...... false not sure

Explanation:

4 0
3 years ago
A closed container is filled with oxygen. the pressure in the container is 275 kpa . what is the pressure in millimeters of merc
miv72 [106K]
1 kpa = 7.5 mm of Hg  [Remember it or can be found on internet ]

So, 275 kpa = 7.5 x 275  =  2062.5 mm of Hg

8 0
3 years ago
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