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arsen [322]
3 years ago
5

When was the speed of light first accurately calculated?

Chemistry
2 answers:
VikaD [51]3 years ago
7 0
A becuse i reamber somthing about a <span>lanterns or d </span>
Agata [3.3K]3 years ago
4 0

B. When Roemer used the eclipsed moons of Jupiter along with Earth's orbit around the Sun to compare different speeds over time.

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Oxygen for complete combustion
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Does a precipitate form when a solution of calcium chloride and a solution of mercury(I) nitrate are mixed together? Write the n
olganol [36]

Answer : Yes, a precipitate form when a solution of calcium chloride and a solution of mercury(I) nitrate are mixed together.

The net ionic equation will be,

2Hg^{+}(aq)+2Cl^{-}(aq)\rightarrow Hg_2Cl_2(s)

Explanation :

In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The given balanced ionic equation will be,

CaCl_2(aq)+2HgNO_3(aq)\rightarrow Ca(NO_3)_2(aq)+Hg_2Cl_2(s)

The ionic equation in separated aqueous solution will be,

Ca^{2+}(aq)+2Cl^{-}(aq)+2Hg^{+}(aq)+2NO_3^{-}(aq)\rightarrow Hg_2Cl_2(s)+Ca^{2+}(aq)+2NO_3^{-}(aq)

In this equation, Ca^{2+}\text{ and }NO_3^- are the spectator ions.

By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.

The net ionic equation will be,

2Hg^{+}(aq)+2Cl^{-}(aq)\rightarrow Hg_2Cl_2(s)

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3 years ago
cuantos electrones se necesitan para formar una carga -38uC sabiendo que la carga de un solo electrón es -1.6×10-19 C???​
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No te entiendo corazón......
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Why is it dangerous to not have the right grade motor oil for the climate you drive in?
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Actually its the second and fourth one for sure! If you just put one it only gives parcel credit. ;-;

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Why doesn't Florida have as many earthquakes as California? Use evidence from the map to support your response.
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Explanation:

hope this helps :)

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