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
snow_lady [41]
3 years ago
15

On average, how many hours of sleep do teenagers need each night? 7 hours 7.5 hours 8 hours 8.5 hours

Chemistry
2 answers:
Marrrta [24]3 years ago
5 0

Answer:

8 to 8.5 since that is the recommended and people usualy sleep more than that

Vera_Pavlovna [14]3 years ago
3 0

Answer:

7.5

Explanation:

i listened to the other dude and got it wrong but it showed this answer to be correct

You might be interested in
Which type of molecule forms structures in cells and stores energy? I NEED HELP
olga2289 [7]

Answer:

Lipid forms structures in cells and stores energy

Explanation:

7 0
3 years ago
Which rule for assigning oxidation numbers is correct?
AURORKA [14]

The incorrect rule for assigning oxidation numbers is Hydrogen is usually –1.

Hydrogen is usually +1

<h3>What is oxidation number?</h3>

Oxidation numbers can be defined as that number which is assigned to an element in chemical reaction which represents the number of electrons lost or gained.

So therefore, the incorrect rule for assigning oxidation numbers is Hydrogen is usually –1.

Learn more about oxidation numbers:

brainly.com/question/27239694

#SPJ1

7 0
2 years ago
Metric prefixes 9th grade level
zhannawk [14.2K]

Answer:

<h3>A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol.</h3>

6 0
3 years ago
True or False: You can make a concentrated solution more dilute by adding solvent.
Vlad [161]
That statement is true because to make a diluted solution, you have to add more solvent than the solute in a concentrated solution. This is extra information, but to make a diluted solution more concentrated, you have to add more solute since a concentrated solution has an excess amount of solute as stated before.
6 0
3 years ago
Read 2 more answers
(ii) Electrons are supplied to the external circuit. How and where is this done?<br> [2]
pentagon [3]

Answer:

The electrons are supplied by the species getting oxidized. They move from anode to the cathode in the external circuit. The external battery supplies the electrons. They enter through the cathode and come out through the anode

7 0
3 years ago
Other questions:
  • Fireworks that contain metallic salts such as sodium, strontium, and barium can generate bright colors. a technician investigate
    9·1 answer
  • I NEED HELP FAST!
    9·1 answer
  • Drag each quantity to the correct location on the table. Complete the table of bond energies and bond lengths. 125 pm 145 pm 167
    11·1 answer
  • Suppose you have a solid that looks like gold but you believe it to be fool’s gold. The mass of the solid is 23.5 grams. When th
    14·1 answer
  • Cite as principais características das tentativas de organização da Tabela periódica-Tríades de Dobereiner, o Parafuso Telúrico
    12·1 answer
  • 1.
    8·1 answer
  • I need help, lots of points to you, please give genuine answers, will mark brainliest.​
    6·1 answer
  • Which one of these salts will form a basic solution upon dissolving in water?
    13·1 answer
  • How much heat is required to raise the temperature of 1,500 g of water from 25°C to 52°C? The specific heat of water is 4.184 J/
    10·2 answers
  • Calculate the concentration (in m) of hydronium ions in a solution at 25. 0 °C with a POH of 3. 58.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!