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Rufina [12.5K]
3 years ago
14

Why do some liquids form a convex surface when placed in a narrow test tube while others form a concave surface​

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

Answer:

When liquid water is confined in a tube, its surface (meniscus) has a concave shape because water wets the surface and creeps up the side. ... When liquid mercury is confined in a tube, its surface (meniscus) has a convex shape because the cohesive forces in liquid mercury tend to draw it into a drop.

Explanation: Have a great day!

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Why was Rutherford's Gold Foil Experiment so important?
Oksanka [162]

Answer:

Answer is 'B' I think

Explanation:

Rutherford's Gold Foil Experiment proved the existence of a small massive center to atoms, which would later be known as the nucleus of an atom. Through previous experiments of shooting alpha particles, Rutherford knew they had considerable mass and speed.

4 0
3 years ago
Cu is in FCC structure. We know that even at close to melting temperature, vacancies are still sparsely distributed, i.e., it is
sveticcg [70]

Answer:

6

Explanation:

FCC is face centered cubic lattice. In FCC structure, there are eight atoms at the eight corner of the cubic unit cell and one atom centered in each of the faces. FCC unit cells consist of four atoms, (8/8) at the corners and (6/2) in the faces.

Given that, Cu has FCC structure and it contains a vacancy at origin (0, 0, 0). And there is no other vacancy directly adjacent to the vacancy at the origin. So, all the adjacent positions contain Cu atoms. Hence, the total number of adjacent atoms of the vacancy at origin can jump into this vacancy.

the above FCC unit cell clearly indicates that there are six adjacent atoms adjacent to the vacancy at origin

So, the total number of adjacent atoms of the vacancy at origin can jump into this vacancy is 6.

5 0
3 years ago
What class of compounds do fats belong to
NARA [144]
Fats are referred to as lipids, or cellular compounds that are insoluble in water.
7 0
4 years ago
Read 2 more answers
1 mol Fe2(CrO4)3=____g
IgorLugansk [536]
111.6g of Fe + 156g of Cr + 192g of O = 459.6g of Fe2(CrO4)3
7 0
3 years ago
Which of these are examples of passive transport? A. osmosis B.diffusion c. endocytosis d.8 mitosis​
AfilCa [17]

Answer:

Passive Transport

Explanation:

The three examples of passive transport are

Diffuison

Osmosis

facilated diffuison

So the answer can be A or B

4 0
3 years ago
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