One hundred million copper atoms are arranged in a line. Which is a reasonable estimate for the length of this line?
1 answer:
The size of an atom is roughly 10^-10 metres 10^-10 • 100,000,000 = 0.01 metres Since 1 metre = 100 centimetre 0.01 x 100 = 1 centimetre There’s your answer
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Answer:
element
Explanation:
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(a) 67°c
Formula:-
k=°c+273
°c = 273 - k
°c = 273-67= 206 °c
(b) 1671 k
k=°c+273
°c = 273 - k
°c= 273-1671 = -1398°c
Answer:
mass of sulfur = 96 g
Explanation:
no of moles of sulfur dioxide in molecules =
= 2 moles
therefore mass of sulfur dioxide = moles×atomic number
=2×(16+32)
=96
Since the beaker was heated we can asume that only magnesium cloride is left in the beaker, therfore the difference between the beaker with magnesium chloride and the empty beaker give the mass of magnisium chloride:
The concentration of [CI-] : 0.617 M
<h3>Further explanation</h3>
FeCl₃ dissolved in 450 mL of solution(will dissociate )
Reaction
FeCl₃⇒Fe³⁺+3Cl⁻
mol FeCl₃(MW=162,2 g/mol)