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3 years ago

What is the meaning of ghettoisation?

Chemistry

1 answer:

hram777 [196]3 years ago

7 0

Answer:

or ghettoise, verb. (transitive) to confine or restrict to a particular area, activity, or category.

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The diffusion flux is defined as: a) Mass, per unit surface area, per unit time b) Surface area, per unit time c) Time, per unit

s2008m [1.1K]

Answer:

The correct answer is option a.

Explanation:

Diffusion flux is defined as movement of mas of atoms diffusing through the unit area in per unit time.It measured in ( $kg/m^2 s$ ).

$J=\frac{1}{A}\frac{dM}{dt}$

J = diffusion flux

A = Unit area A through which atoms moves.

M = mass of atoms passes in t interval of time.

6 0

4 years ago

A. 1.0 liter of a 1.0 M mercury (II) chloride (HgCl2) solution<br> IMO)

insens350 [35]

What mass of the following chemicals is needed to make the solutions indicated?

Answer:

271.6g

Explanation:

The mass of the chemicals need to make the needed solution can be derived by obtaining the number of moles first.

Given parameters:

Volume of solution = 1L

Molarity of HgCl₂ = 1M

number of moles of HgCl₂ = molarity of solution x volume

= 1 x 1

= 1 mole

From;

Mass of a substance = number of moles x molar mass;

we can find mass;

Molar mass of HgCl₂ = 200.6 + 2(35.5) = 271.6g/mol

Mass of the substance = 1 x 271.6 = 271.6g

4 0

4 years ago

When neutrons are added to the atom, the mass number

lianna [129]

The answer is 3) no change

Hope this helps

4 0

3 years ago

13. Gas A and gas B (both unreactive) are allowed to mix. The total pressure is found to be 3.50 atm. f gas B

murzikaleks [220]

C sorry if it’s wrong

7 0

3 years ago

The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (s

Mrac [35]

Answer:

Mass of hydrogen gas evolved is 0.0749 grams.

Explanation:

Total pressure of the gases = p = 758 mmHg

Vapor pressure of water = 23.78 mmHg

Pressure of hydrogen gas ,P = p - 23.78 mmHg = 758 mmHg - 23.78 mmHg

P = 734.22 mmHg = $\frac{734.22}{760} atm=0.966 atm$

Temperature of of hydrogen gas ,T= 25°C =298.15 K

Volume of hydrogen gas = V = 0.949 L

Moles of hydrogen gas =n

PV = nRT (Ideal gas equation )

$n=\frac{PV}{RT}=\frac{0.966 atm\times 0.949 L}{0.0821 atm L/mol K\times 298.15 K}$

n = 0.03745 mol

Moles of hydrogen gas = 0.03745 mol

Mass of 0.03745 moles of hydrogen gas = 0.03745 mol × 2 g/mol = 0.0749 g

Mass of hydrogen gas evolved is 0.0749 grams.

3 0

4 years ago

What is the meaning of ghettoisation?​

What is the meaning of ghettoisation?