1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ivann1987 [24]
3 years ago
12

30 POINTS TO WHOEVER CAN FIGURE IT OUT!!When is the sun directly overhead at the equator?

Chemistry
2 answers:
tresset_1 [31]3 years ago
8 0

Answer:

D

Explanation:

The sun is directly overhead at the equator during the vernal (usually March 20) and autumnal (around September 23) equinoxes.

Basically, what happens is that on these two days, day and night practically last for an equal number of hours.

Hope this helps!

Andre45 [30]3 years ago
3 0

Answer:

D) Vernal and autumnal equinoxes.

You might be interested in
Which statement accurately describes the charge of the nucleus of an atom? A. The nucleus can be either positively charged or ne
BARSIC [14]
<span>A. The nucleus can be either positively charged or neutral.

The nucleus is located at the center of an atom wherein it contains the protons and the neutrons.</span>
3 0
3 years ago
Read 2 more answers
Why are fluorine (F), chlorine (Cl), and iodine (I) in the same group of the periodic table?
Verdich [7]

Fluorine (F), Chlorine (Cl) and Iodine (I) are all found in the same group on the Periodic Table because they have similar physical properties. Since they are all Halogens, they have 7 valence electrons in their outer shell. In order to get a total of 8, they naturally combine with elements of the same isotope (itself), so D comes close to being correct, but it's not the best answer choice.

3 0
3 years ago
Read 2 more answers
The Law of Moments is also an equation written as _____.
gayaneshka [121]

Answer:

I think M=rF

Explanation:

7 0
3 years ago
Read 2 more answers
) Starting with 5.00 g barium chloride n hydrate yields 4.26 g of anhydrous barium chloride after heating. Determine the integer
RSB [31]

Answer:

2

Explanation:

Mass of water molecule = mass of hydrated salt - mass of anhydrous salt

Mass of water molecule = 5.00 - 4.26 = 0.74g of water molecule.

Number of moles = mass / molarmass

Molar mass of water = 18.015g/mol

No. of moles of water = 0.74 / 18.015 = 0.0411 moles.

Mass of BaCl2 present =?

1 mole of BaCl2 = 208.23 g

X mole of BaCl2 = 4.26 g

X = (4.26 * 1) / 208.23

X = 0.020

0.020 moles is present in 4.26g of BaCl2

Mole ratio between water and BaCl2 =

0.0411 / 0.020 = 2

Therefore 2 molecules of water is present the hydrated salt.

4 0
3 years ago
What is the frequency of radiation emitted by a photon of light if the energy released during its transition to ground state is
JulijaS [17]

Answer:

5.449 x 10¹⁸ Hz

Explanation:

Energy (E) =Frequency (F) x Plancks constant (h)

F= 3.611x10⁻¹⁵J / 6.626 x 10⁻³⁴ Js⁻¹

F =5.449 x10¹⁸ s⁻¹ or 5.449 x 10¹⁸ Hz

8 0
3 years ago
Other questions:
  • State the reason that soft drinks is a mixture and water is a compound?
    10·2 answers
  • Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt
    7·1 answer
  • Which state of matter takes the shape but NOT the volume of its container?
    5·2 answers
  • Calculate the pH of a solution with [OH−]=1.3×10−2M. (Hint: Begin by using Kw to find [H3O+].)
    7·1 answer
  • How many electrons in an atom could have these sets of quantum numbers?
    14·1 answer
  • Which acid and base neutralize to give potassium chloride salt? hf(aq) and kcl(aq) hcl(aq) and kcl(aq) hf(aq) and koh(aq) none o
    15·1 answer
  • A student increases the temperature of a 673 cm^3 balloon from 275 K to 460 K.
    12·1 answer
  • Do you think crystals formed in conditions that were stable or did they change often?
    12·1 answer
  • What Chemicals including in Cosmetic?​
    9·1 answer
  • What is the molar solubility in water of ag2cro4 ? (the ksp for ag2cro4 is 8 x 10-12. )
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!