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
sashaice [31]
3 years ago
15

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

Chemistry
1 answer:
icang [17]3 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.
You might be interested in
A sample of carbon monoxide gas is initially in a 5858 mL container. The gas is then moved to 3.29 L container at a temperature
Doss [256]

Answer:

d i took the test

Explanation:

5 0
3 years ago
How many moles of liquid water must freeze to remove 100 kJ of heat? (ΔHf = –334 J/<br> g.
Juliette [100K]
First figure out how many grams must freeze and then convert the grams to moles. 
<span>Hf = -334 J/g. Convert this to KJ/g by dividing by 1000. (There are 1000 Joules in a kJ). </span>
<span>Hf = -334 J/g ÷ 1000 J/kj = -0.334 kJ/g </span>
<span>Now, divide 100 kJ by -0.334 kJ/g (see how the units are lining up?) </span>
<span>100 kJ ÷ -0.334 kJ/g = 299 g </span>
<span>Now convert this to moles by dividing by the molecular weight of water (18.0g/mole). </span>
<span>299 ÷ 18.0 = 16.6 moles </span>
5 0
3 years ago
Describe an acid or base in terms of its relationship to protons
motikmotik
Acids are donors of protons (H+) and bases are acceptors of protons.
For example:
1) hydrochloric acid (HCl) in reaction with water give one proton to water and become chloride anion (Cl-).
2) ammonia (NH3) Is base, in reaction with water accepts one protone and become ammonium cation (NH4+).
4 0
3 years ago
How is the mantle different from the core?​
Pepsi [2]

Answer:The Earth's mantle is made up of semisolid rocks. ... The core consists of extremely hot metal layers instead of rock. Iron and nickel make up the outer section of the core, while the interior is almost entirely iron. The inner core is almost totally solid and shaped like a ball.

Explanation:

3 0
4 years ago
To change an object from a liquid to a gas _________ must happen
nignag [31]
Evaporation!
-Melting is a solid to a liquid
-sublimation is directly from a solid to a gas
-condensation gas to liquid
4 0
3 years ago
Other questions:
  • You are assembling cars, and your job is to put the wheels on the vehicles. You have 3520 wheels, 14040 nuts (4 nuts needed per
    8·1 answer
  • Which prediction about a methane molecule would most likely be made by using both the quantum model of the atom and John Dalton'
    7·1 answer
  • Heterogeneous mixture with larger particles that never settle
    11·1 answer
  • What substance has a melting point of 0 and a boiling point of 100
    8·2 answers
  • HELP ASAPP PLZZZ I WILL GIVE YOU 50 POINTS
    7·2 answers
  • Why do people remove entire forests ?
    14·1 answer
  • Please help me with my chemistry
    14·2 answers
  • A company employs several high school students in its food-packaging factory. All the students are below 17 years of age. Which
    6·2 answers
  • Please help question is in photo will give brainiest
    5·1 answer
  • 3. How does<br> photosynthesis affect<br> your daily life?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!