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Fofino [41]
3 years ago
8

Rank which beaker will dissolve first? ( 1 - means the fastest to dissolve , 3 - means the slowest to dissolve )

Chemistry
1 answer:
aliya0001 [1]3 years ago
7 0

Answer:

1 —Powdered; 2 — Granulated; 3 — Sugar in the Raw

Explanation:

None of the beakers will dissolve. They are made of glass. However, the sugars in them will dissolve.

One of the ways to increase the rate of dissolving is to decrease the size of the solute particles, because that increases their total surface area and exposes more of the solute to the action of the solvent.

The relative sizes of the crystals and their surface areas are approximately

\begin{array}{rccl}\textbf{Type} & \textbf{Size} & \textbf{Area}\\\text{Raw} &1 & 1\\\text{Granulated} & \frac{1 }{2} & 2\\\text{Powdered} & \frac{1}{20} & 20\\\end{array}

We see that powdered sugar has the greatest surface area so, if all other factors are the same, the order of dissolving should be

1 —Powdered; 2 — Granulated; 3 — Sugar in the Raw

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How can you separate mixture of suphur, nacl and nh4cl​
weqwewe [10]

Answer:

Ammonium chloride, iron ,Sulphur and salt mixed together... they can be separated in the following methods.

1. Ammonium chloride is separated by sublimination... NC4CI is sublimable. Heat the mixture in a china dish and collect the funds of NC4CI (sublimable substance)

2. Bring a magnet close to the remaining mixture. Iron is magnetic substance and thus, it will be attracted towards the magnet. Iron is separated.

3. Sulphur is insoluble in water and salt is soluble. Add water to the remaining mixture and then wait for sedimentation. Separate the sulphur by decantation.

4. Heat the filtered salt solution to obtain salt.

3 0
3 years ago
2 Points
lbvjy [14]

Answer:

the correctanswer is a a and b

8 0
3 years ago
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Drag the tiles to the correct locations. Each tile can be used more than once, but not all tiles will be used. One or more locat
Svetlanka [38]

Answer:             xx           xx

                         xxOxxCxxSxx

Explanation:

Sorry for the structure, but since Oxygen and Sulfur belong to group of six they want to share two electrons. Carbon belonging to group four wants to share 4 since its valence shell has four electrons.

Therefore the resulting Lewis structure is linear (like carbon dioxide) with two pairs of lone pairs in each O and S atoms and 0 lone pairs in carbon and two double bond.

8 0
3 years ago
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The plot shows the absorbance spectra for solutions of caffeine, benzoic acid, and Mountain Dew® soda, each in 0.010 M HCl . A p
Aliun [14]

Complete Question

The diagram of the complete question is shown on the first uploaded image.

Answer:

a) The approximate absorbance of benzoic acid at 228 nm? : A = 0.8

b) The molar absorptivity(∈)

of benzoic acid at 228 nm? : ∈   =  1.12 * 10^{4} M^{-1} cm^{-1}

Explanation:

Looking at the absorbance spectra, we can see that the approximate absorbance of benzoic acid at 228 is 0.8.

mass concentration of benzoic acid = 8.74 \frac{mg}{L} =8.74 * 10^{-3} \frac{g}{L}

the molar concentration of benzoic acid = (mass concentration of benzoic acid) / (molar mass of benzoic acid )

 

molar concentration of benzoic acid = (8.74 *10^{-3} \frac{g}{L} ) /(122.12\frac{g}{mol} )

molar concentration of benzoic acid = 7.157 * 10^{-5}M

molar absorptivity (∈) of benzoic acid = (absorbance) /[ (molar concentration of benzoic acid ) × (path length) ]

 

 ∈    = (0.8) / [ (7.157 *10^{-5}M) ×(1.00 cm)]

        =  1.12 * 10^{4} M^{-1} cm^{-1}

     

5 0
3 years ago
Write the balanced NET ionic equation for the reaction when AlCl 3 NaOH are mixed in aqueous solution. If no reaction occurs, wr
bekas [8.4K]

it makes aloh

AlCl3 + 3NaOH = AlOH3 + 3NaCl

Al3+ + 3Cl- + 3Na+ + 3OH- = AlOH3 + 3Na+ + 3Cl-

all cancels out except

Al3+ + 3OH- = AlOH3

8 0
4 years ago
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