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Oksana_A [137]
3 years ago
8

A chemist test new mixtures for paint samples and decides one mixtuees stickiness makes is worthless

Chemistry
1 answer:
monitta3 years ago
4 0

Answer:

known are those proposed by Patrick,1 and Howard,2 and the group scheme devised by ... are unsatisfactory for complicated food mixtures and entirely useless so far as ... Congdon's procedure is evidently based on qualitative tests made on the ... it was decided at the outset that on account of the complex food mixtures.

Explanation:

You might be interested in
4. If 175 undecayed nuclei remain from a sample of 2800 nuclei, how many half-
Irina18 [472]

Answer:

X = 4

Explanation:

Start 2800

End 175

175 = 2800x(0.5)^X

175/2800 = 0.5^X

0.0625 = 0.5^X

log(0.5 x) = log(0.0625)

x · log(0.5) = log(0.0625)

-0.301x = -1.204

x = -1.204/-0.301

x = 4

8 0
3 years ago
Chemistry problem, just need an explanation to why this is the answer
ICE Princess25 [194]

Answer:

Filtration

Explanation:

Evaporation could work, but it would take too long and might be harmful to the environment.  This is not the answer.

Distillation is used to purify a substance.  It is generally only used when separating two liquids.  This is not the answer.

Filtration is where you would pour the liquid through a filter and collect the solid.  This is the answer.

Chromatography is technique that is used to test whether something is pure.  You would not be able to separate the two substances using this technique.  This is not the answer.

6 0
3 years ago
Predict whether each of the following substances would be more soluble in water (polar solvent) or in a hydrocarbon such as hept
vlada-n [284]

Answer:

Vegetable oil will dissolve in heptane

Isopropyl alcohol will dissolve in water

Potassium Bromide will dissolve in water

Explanation:

In chemistry, like dissolves like. This implies that polar substances will dissolve in polar solvents and nonpolar substances will dissolve in nonpolar solvents. This is so because, dissolution of a solute in a solvent involves adequate intermolecular interaction between solute and solvent which isn't possible between a polar and a nonpolar substance.

5 0
3 years ago
By which process aqua fortis is manufactured
kap26 [50]

Answer: Aqua fortis is also known as Nitric Acid  

Explanation: and the process in making aqua fortis is THE OSTWALDS PROCESS

detailed explanation by me

ammonia is also used in this process, which is reacted with oxygen and water and a catalyst platinum.

HOPE THIS HELPSS!!!

7 0
3 years ago
A 1.450 g sample of an unknown organic compound , X, is dissolved in 15.0 g of toluene
muminat

Answer:

Molecular weight of the compound = 372.13 g/mol

Explanation:

Depression in freezing point is related with molality of the solution as:

\Delta T_f = K_f \times m

Where,

\Delta T_f = Depression in freezing point

K_f = Molal depression constant

m = Molality

\Delta T_f = K_f \times m

1.33 = 5.12 \times m

m = 0.26

Molality = \frac{Moles\ of\ solute}{Mass\ of\ solvent\ in\ kg}

Mass of solvent (toluene) = 15.0 g = 0.015 kg

0.26 = \frac{Mole\ of\ compound}{0.015}

Moles of compound = 0.015 × 0.26 = 0.00389 mol

Mol = \frac{Mass\ in\ g}{Molecular\ weight}

Mass of the compound = 1.450 g

Molecular\ weight = \frac{Mass\ in\ g}{Moles}

Molecular weight = \frac{1.450}{0.00389} = 372.13\ g/mol

4 0
3 years ago
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