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3 years ago

Ways to manage non-biodegradable waste wisely

Chemistry

1 answer:

miv72 [106K]3 years ago

6 0

Answer:

Non-biodegradable wastes can be managed by practicing the concept of 3Rs—Reduce, Reuse, and Recycle.

...

Management Of Non-Biodegradable Wastes

Use fountain pen in place of a ballpoint pen,

Use old newspapers for packaging, and.

Use cloth napkins in place of disposable ones.

Explanation:

there!

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Please help (show work if needed)

vlada-n [284]

Basically, this figure represents scattering of alpha particles by the atoms of a gold foil.

Here, A represents that a few alpha particles are deflected through large angle. It shows that the nucleus of the atom is positively charged which repels the positively charged alpha particles and deflect them from their original path.
B represents that most alpha particles pass straight through the gold foil without any deflection from their original path. The reason is that there is a lot of empty space in the atom.
C represents that some alpha particles are deflected through small angles. The reason is same as that of A.

Hope you could understand.

If you have any query, feel free to ask.

3 0

3 years ago

Which of these statements describes a chemical property? A. Iron is attracted to a magnet. OB. Iron rusts when exposed to air. O

choli [55]

Answer: B: Iron rusts when exposed to air.

Explanation:

8 0

4 years ago

Given thatH2(g) + F2(g) -> 2HF(g) => ∆H = -546.6 kJ . mol-12H2(g) + O2(g) -> 2H20(l) => ∆H = -571.6 kJ. mol-1

Fantom [35]

<u>Answer:</u> The $\Delta H^o_{rxn}$ for the reaction is -521.6 kJ.

<u>Explanation:</u>

Hess’s law of constant heat summation states that the amount of heat absorbed or evolved in a given chemical equation remains the same whether the process occurs in one step or several steps.

According to this law, the chemical equation is treated as ordinary algebraic expressions and can be added or subtracted to yield the required equation. This means that the enthalpy change of the overall reaction is equal to the sum of the enthalpy changes of the intermediate reactions.

The chemical equation for the reaction of fluorine and water follows:

$2F_2(g)+2H_2O(l)\rightarrow 4HF(g)+O_2(g)$ $\Delta H^o_{rxn}=?$

The intermediate balanced chemical reaction are:

(1) $H_2(g)+F_2(g)\rightarrow 2HF(g)$ $\Delta H_1=-546.6kJ$ ( × 2)

(2) $H_2(g)+O_2(g)\rightarrow 2H_2O(g)$ $\Delta H_2=-571.6kJ$

The expression for enthalpy of reaction follows:

$\Delta H^o_{rxn}=[2\times \Delta H_1]+[1\times (-\Delta H_2)]$

Putting values in above equation, we get:

$\Delta H^o_{rxn}=[(2\times (-546.6))+(1\times (571.6))]=-521.6kJ$

Hence, the $\Delta H^o_{rxn}$ for the reaction is -521.6 kJ.

8 0

3 years ago

Which of the following is the ground state electron configuration of Ni?

Damm [24]

Answer:

Nickel atoms have 28 electrons and the shell structure is 2.8. 16.2. The ground state electron configuration of ground state gaseous neutral nickel is [Ar]. 3d8.

Explanation:

3 0

3 years ago

What does the chemical formula CaCl, show about the compound it represents

xxTIMURxx [149]

It is Calcium chloride

8 0

3 years ago

Ways to manage non-biodegradable waste wisely​

Ways to manage non-biodegradable waste wisely