3 years ago

Why is ice in a glacier considered to be a mineral, but water from a glacier is not?

1 answer:

5 0

Minerals need to be solid with a crystalline structure. Ice has these properties, liquid water does not. (i hope that helps you)

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True or false the fission of a nucleus is accompanied by the release of very little energy

4vir4ik [10]

Answer:

false

Explanation:

fission is lots of energy

7 0

3 years ago

What is the definition of thermal expansion

MissTica

Answer:

Thermal expansion is the tendency of matter to change its shape, area, and volume in response to a change in temperature.

Explanation:

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3 years ago

Write a balanced chemical equation for the standard formation reaction of solid chromium(iii) nitrate crno33 .

Drupady [299]

Explanation:

Standard formation of an substance is defined as formation of one mole of substance from its constituting elements.

Chromium(III) nitrate is composed of chromium, nitrogen and three oxygen atoms.

$2Cr(s)+3N_2(g)+9O_2\rightarrow 2Cr(NO_3)_3(s)$

A balanced chemical equation for the standard formation reaction of solid chromium(III) nitrate

$Cr(s)+\frac{3}{2}N_2(g)+\frac{9}{2}O_2\rightarrow Cr(NO_3)_3(s)$

7 0

3 years ago

Calculate the fraction of lattice sites that are schottky defects for cesium chloride at its melting temperature (645oc). assume

baherus [9]

Answer : 7.87 X $10^{-6}$ .

Explanation : To find the fraction of schottky defects in the given lattice of CsCl,

we use the formula, $\frac{N_{s} }{N}} = exp ( \frac{-Q_{s}}{2KT} )$

on solving with the given values , $Q_{s}= 1.86 eV$ and T as 645 + 273 K and rest are the constants.

$\frac{N_{s} }{N}} = exp ( \frac{-1.86 eV}{2 X (8.62 X 10^{-5}) X (645 +273)} )$

we get the answer as 7.87 X $10^{-6}$ .

6 0

2 years ago

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7. Wind, moving water, falling rocks, and roller-skating children are all examples of -

cluponka [151]

Answer:

kinetic energy

the is because all of them are moving at once

5 0

2 years ago