<span>How does the modern Periodic Table of the Elements differ from Mendeleev's chart?</span>
Dmitri Mendeleev's periodic table<span> featured </span>elements<span> arranged in accordance with their atomic mass, while the </span>modern table<span> has </span>elements<span> arranged according to </span>periodic<span> number. </span>Mendeleev's periodic table<span> also had the </span>elements<span> arranged vertically, whereas the </span>modern table<span> has them arranged horizontally.
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I'm going to have to say A. My reason to that is because when you leave a cup of hot cocoa (assuming its hot), it gives off the heat (exothermic) the
Answer: C. 1000 Newton
Explanation:
Given that :
Weight of moon rover on earth = 6000 newton
Approximate of moon rover on moon will be?
Weight of an object (W) = mass(m) × acceleration due to gravity(g)
To get the mass of moon rover(m) :
m = weight / acceleration due to gravity
g on earth = 9.8m/s²
Hence,
mass of moon rover = 6000/ 9.8
= 612.244kg
Surface gravity on the moon is about 1.6m/s²
Hence ;
Weight of moon rover on the moon :
Mass of moon rover × 1.6m/s²
= 612.244 × 1.6m/s²
= 979.59 Newton
= 1000 Newton (nearest thousand)
The correct option is (e) 0.389 moles.
The number of moles represented by 21.7 g fe 0.389 moles.
Solution:
(21.7g) x (1mol/55.85g) = 0.389 moles
<h3>What is moles?</h3>
The mole, represented by the symbol mol, is the fundamental SI unit of material quantity. The amount of a substance determines how many elementary entities of that substance are present in an object or sample. Since the SI fundamental units were revised in 2019, the mole is now exactly defined as 6.022140761023.
<h3>Why the mole is a base unit?</h3>
The amount of a substance determines how many elementary entities of that substance are present in an object or sample. Since the SI fundamental units were revised in 2019, the mole is now exactly defined as 6.022140761023.
To learn more about moles visit:
brainly.com/question/26416088
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