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d1i1m1o1n [39]
4 years ago
12

Please help me someone, I so confused!

Chemistry
1 answer:
pochemuha4 years ago
7 0
Irts sometimees good to be conduse not all the times is good to be condused but sometimes your notr.

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If a small amount of the unknown solute fails to dissolve in the lauric acid, will the molar mass that you calculate for unknown
dimaraw [331]
If the solute fails to dissolve in the lauric acid, the molar mass that can be calculated based on the concentration of the solute dissolved in the lauric acid would be too low. This is because there are unaccounted masses that cannot be included in the calculation. This is a case of underestimation of the molar mass.

To avoid that this happens, ensure that all of the solute dissolves well in solvent by mechanical means (stirring, shaking, etc) or introducing heat. 
7 0
3 years ago
Give the formula and name for the iconic compounds formed from the following pairs of elements:
Fudgin [204]

(1) Give the formula and name for the iconic compounds formed from the following pairs of elements:

A. KCl potassium chloride

B. ZnO zinc oxide

(2) Give the formula for each of the following ionic compounds:

A. KClO₃ potassium chlorate

B. MgSO₄ magnesium sulfate

C. KNO₃ potassium nitrate

(3) Give the name of the following covalent compounds:

A. SO₂ sulfur dioxide

B. CCl₄ carbon tetrachloride

C. SiS₂ silicon disulfide

D. SCl₂ sulfur dichloride

4 0
3 years ago
How many molecules of sulfur trioxide are in 78.0 grams?
zalisa [80]

Answer:

b) 5.87 E23 molecules

Explanation:

∴ mm SO3 = 80.066 g/mol

⇒ molecules SO3 = (78.0 g)(mol/80.066 g)(6.022 E23 molec/mol)

⇒ molec SO3 = 5.866 E23 molecules SO3

5 0
3 years ago
You are asked to make 500 mL of a 0. 250 M sodium chloride (NaCl) solution.
nignag [31]

Answer:

a. .125 mol b. 7.25g

Explanation:

a. To get the moles multiply the volume by the molarity.

.5L*.25M=.125mol NaCl

b. The molar mass is provided so multiply the moles by the molar mass to get the amount of grams of nacl.

.125mol*58molar mass=7.25g nacl to make the solution

3 0
2 years ago
The alchemical, medical, and technological traditions were precursors to chemistry. State a contribution that each made to the d
Kisachek [45]

Alchemy was a form of early chemistry that aimed to transmute base metals into gold and to create an elixir of longevity or eternal life.

Despite these connotations of the mythic and mystical, alchemical follow contend a crucial role within the evolution of contemporary science.

Historically, alchemy refers to each the investigation of nature and an early philosophical and religious discipline that combined chemistry with metal work. Alchemy additionally encompassed physics, medicine, astrology, mysticism, spiritualism, and art.

Chemistry in medicine:

Major contributions to health care have been made possible by chemistry. The development of new drugs involves chemical analysis and synthesis to form new compounds.

Chemistry contributes to the preparation of materials for surgery (sutures, artificial skin, and sterile materials). The sutures used in many surgeries today do not have to be removed, because they simply dissolve in the body after a period of time. Replacement blood vessels for heart and other types of surgery are often made of chemicals that do not react with the tissues, so they will not be rejected by the body and this was made possible with the help of the chemistry.

Chemistry in technologies:

The Iron Age, saw the prevalence of iron increase as the major metal of choice for cutting tools and weapons. Iron was slower to evolve as a material because it required higher temperatures to work the metal. This shift saw a change in smelting practices, improved furnace technologies, and also the development of forging, as opposed to the casting techniques used in the Bronze Age.

Now a days, in big industries, the machines which are made up of big metal sheets or metals, are given shape with the help of fire, by the process of Smelting. The industries tried to make plastics afterwards.

To know more about Alchemy, refer to this link:

brainly.com/question/5997100

#SPJ4

4 0
2 years ago
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