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sashaice [31]
2 years ago
15

Spring and autumn both have a certain day where the amount of daytime hours

Chemistry
1 answer:
icang [17]2 years ago
7 0

Answer:

d. Equinox​

Explanation:

A certain day in spring and autumn where the amount of daytime hours and nighttime hours are the same is called equinox.

Equinox occurs twice in a year on March 20 and September 23rd.

  • During an equinox, the south and north hemisphere of the earth are receiving equal amount of sunlight.
  • The opposite of equinox is solstice in which the duration of light is unequal.
  • The equator is the only great circle that is a line of latitude.
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Read the following paragraph from the section "Dreaming Of A World Deep Below."
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B

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Peter and Jessica are both forensic scientists. Peter visits crime scenes to pr
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3 years ago
Consider two different containers, each filled with 2 moles of Ne(g). One of the containers is rigid and has constant volume. Th
zysi [14]

Answer:

See explanation.

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The solubility of copper(i) chloride is 3.91 mg per 100.0 ml of solution. calculate ksp for cucl (cucl=99.00 g mol-1).
garri49 [273]
Convert  Mg  to  grams
1g =1000mg  what  about  3.91  Mg
=  3.91mg  x  1g/1000mg=  3.91  x10^-3 g
moles= mass/molar mass
that  is  3.91  x10^-3g  /99 g/mol=3.95 x10^-5moles
concentration=   moles  /  vol   in  liters

that  is  3.95  x10^-5/100  x1000=  3.94  x10^-4M

equation for  dissociation  of  CUCl=   CUCl---->  CU^+   +Cl^-

Ksp=(CU+)(CI-)
that  is  (3.95  x10^-4)(3.95  x10^-4)
Ksp=  1.56  x10^-7
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3 years ago
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