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ad-work [718]
3 years ago
15

Why is gold found in the pure state in nature?

Chemistry
1 answer:
Shkiper50 [21]3 years ago
5 0
A native metal is any metal that is found<span> in its metallic </span>form<span>, either </span>pure<span> or as an alloy, in </span>nature<span>. ... Over geological time scales, very few metals can resist natural weathering processes ! hope i helped!</span>
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Draw a mechanism for the reaction of methanol with sodium amide. In the box to the left, draw any necessary curved arrows. Show
Greeley [361]

Answer:

See explanation

Explanation:

When sodamide reacts with methanol, the following equilibrium is set up;

CH3OH(aq) + NH2-(aq) ⇄ CH3O-(aq) + NH3(aq)

In the reaction, the sodamide acts as a base that abstracts a proton from methanol to yield the conjugate base of methanol which is the methoxide ion.

The forward reaction is favoured at equilibrium.

8 0
3 years ago
A plane travels at 600 km/hr. How far will it travel in 3 hrs 15 min ?
ElenaW [278]
Answer:
1950 km in 3 hrs 15 min
step-by-step explanation:
600 • 3.25
1950 km
8 0
3 years ago
The temperature of a 500. ml sample of gas increases from 150. k to 350. k. what is the final volume of the sample of gas, if th
maw [93]
<span>pv=nrt; Pressure and moles are constant. p=nr(150k)/.5 L; Pressure initially After temp change pv=nrt; What is volume? v=nr(350k)/p; p is constant so we can substitute from above v=nr(350k)/(nr(150k)/.5 L)) v=350/150/.5 L v=4.66 liters</span>
3 0
3 years ago
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The diagram above depicts an energy releasing process involving the uranium atom. Which form of energy does this process depict?
mariarad [96]

A nuclear energy is the answer

5 0
3 years ago
Substance in which two or more elements are combined in a fixed proportion
Firdavs [7]

Answer: compound

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper Cu

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water H_2O

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. Example: Air

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