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slava [35]
2 years ago
9

How does lanthanide contraction influence the density of period 6 transition element​

Chemistry
1 answer:
Kitty [74]2 years ago
6 0

Answer:

For example, the atomic radius of the metal zirconium, Zr, (a period-5 transition element) is 155 pm (empirical value) and that of hafnium, Hf, (the corresponding period-6 element) is 159 pm. ... The increase in mass and the unchanged radii lead to a steep increase in density from 6.51 to 13.35 g/cm3.

Explanation:

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How many moles of NH4NO3 are in 24 g of NH4NO3?​
Virty [35]

Answer:

0.3 mole

Explanation:

number of moles grams

one 14+(4×1)+14+(3×16)

1 80

? 24

Therefore, 24×1÷80 = 0.3 moles of ammonium nitrate

3 0
2 years ago
Crystals most often form in igneous and metamorphic rocks. According to the rock cycle, which processes and features do these ro
Zielflug [23.3K]

The features that are shared by the rocks include the melting and cooling of rocks.

<h3>What is a rock? </h3>

It should be noted that a rock simply means a relatively hard naturally occurring mineral material.

Crystals most often form in igneous and metamorphic rocks. The processes that these rocks share that likely promote the formation of crystals is the melting and cooling of rocks.

Learn more about rocks on:

brainly.com/question/398139

4 0
2 years ago
How many moles are in 15 grams of Li?
svetoff [14.1K]

Answer:

there are 2.2 moles of Li in 15 grams of Li

8 0
1 year ago
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