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
DochEvi [55]
3 years ago
8

HELP PLEASE I WILL MARK YOU AS A BRAINLIEST

Chemistry
1 answer:
never [62]3 years ago
8 0

Answer:

a food pyramid.

Explanation:

the food pyramid shows how autotrophs are at the bottom and how the top predators are at the top, in this case the eagle.

You might be interested in
30 POINTS! ----- How many moles of oxygen gas are needed to completely react with 145 grams of aluminum? Report your answer with
gladu [14]
First a balanced reaction equation must be established:
4Al _{(s)}    +   3 O_{2}  _{(g)}     →    2 Al_{2} O_{3}

Now if mass of aluminum = 145 g
the moles of aluminum = (MASS) ÷ (MOLAR MASS) = 145 g ÷ 30 g/mol
                                                                                    =  4.83 mols

Now the mole ratio of Al : O₂ based on the equation is  4 : 3  
                                                                [4Al  + 3 O₂ → 2 Al₂O₃]

∴ if moles of Al = 4.83 moles
  then moles of O₂ = (4.83 mol ÷ 4) × 3
                              =  3.63 mol   (to  2 sig. fig.) 

Thus it can be concluded that 3.63 moles of oxygen is needed to react completely with 145 g of aluminum. 


     
4 0
3 years ago
HELP ASAP I WILL GIVE BRAINLIEST
alina1380 [7]

Answer:

it can last for 30 minutes

Explanation:

because it is very good at giving off heat, extothermal heat can last for quite a while.

3 0
2 years ago
What's the purpose of mitosis and meiosis?
krok68 [10]
The purport of mitosis is cell regeneration, magnification, and asexual reproduction,while the purport of meiosis is the engenderment of gametes for sexual reproduction. Mitosis is a single nuclear division that results in two nuclei that are conventionally partitioned into two incipient daughter cells.
4 0
3 years ago
Last week you reacted magnesium with a hydrochloric acid aqueous solution and hydrogen gas was produced. Let's say that you coll
miv72 [106K]

Answer:

69.8 kilo Pasacl is the pressure of the hydrogen gas.

Explanation:

Mg+2HCl\rightarrow MgCl_2+H_2

Pressure at which hydrogen gas collected = p = 101.2 kilo Pascals

Vapor pressure water = p^o = 31.4 kilo Pascals

The pressure of hydrogen gas = P

The pressure at which gas was collected was sum of vapor pressure of water and hydrogen gas.

p=P+p^o

P =p-p^o=101.2 kPa-31.4 kPa=69.8 kPa

69.8 kilo Pasacl is the pressure of the hydrogen gas.

3 0
3 years ago
What factor is responsible for keeping the inner core in a solid state
Mrrafil [7]
High pressure and heat
5 0
3 years ago
Read 2 more answers
Other questions:
  • a cadillac escalade has a mass of 2.569 kg if it acceleratesat 4.65m/s what is the net force on the car
    12·1 answer
  • Match the term with its description. Match Term Definition Chloroplast A) An organelle that contains chlorophyll and in which ph
    13·2 answers
  • Ice caps blank more light than deserts because they have a higher albedo?
    14·1 answer
  • What coefficients would complete the equation,__K+__Cl2-->__KCL
    7·1 answer
  • Name two hormones produced by the endocrine system and describe how they work with other organ systems to maintain homeostasis
    8·2 answers
  • 3. What is the substance ozone?
    5·1 answer
  • What are rules of brainly?
    12·2 answers
  • What kind of bond is present in HCI
    11·1 answer
  • Explain how the solubility of water is useful in maintaining various life processes.
    7·1 answer
  • An important and convenient aspect of the metric system is that volume is derived from the basic length measurement. which pair
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!