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
zhannawk [14.2K]
3 years ago
10

Ayuda por favor.

Biology
1 answer:
never [62]3 years ago
5 0
Puedes poner lo típico de bicarbonato de sodio con vinagre, o mentos con coca...una vez que se juntan estos compuestos al reaccionar el vinagre con el bicarbonato de sodio, el dióxido de carbono se libera a la atmósfera ya que el frasco está abierto. En este caso el peso disminuye. Te adjunto en una imagen la ec. de como el ácido acético reacciona con el bicarbonato de sodio para formar acetato de sodio y dióxido de carbono.

Otro que puedes hacer es hervir agua, el agua se transforma segun la temperatura, al hervirse(ebullición) se convierte en vapor. Cumple con la ley de conservacion, la energía no se destruye solo se transforma.para hacer el experimento puedes comparar cuanto pesaba el líquido antes de aplicarle calor.

Puedes aprovechar y realizar otro en el que congeles el agua.

También si disuelves azucar en algun liquido cumple con la ley.

Otros ejemplos....una vela al derretirse, el proceso de digestión, comparar el peso de un refresco con y sin burbujas



Espero haberte servido! Avisa cualquier cosa y si gustas ponerme unos pts estaría genial. Mucha suerte :)

You might be interested in
Explain how the structure of an enzyme makes that enzyme specific
kotykmax [81]
Hello. this is very simple. i know it and im in middle school. dont highschoolers know that you can just ask google and get a verified answer in just a few seconds?

sighs, well i guess older kids dont get technology as much as we do.

no offense, but seriously if you pay more attention in class you might not be asking this silly question right now.




Molecule which enzyme<span> acts on = the substrate. 5. Substrate molecule is held within the active site by bonds that temporarily form between certain amino acids of the active site and groups on the substrate molecule. ... This folds in a particular way = each </span>enzyme<span> has a </span>specific<span> tertiary </span>structure<span>.</span>

6 0
3 years ago
Help meeeeeeeeeeeeee
Vesna [10]
50% because of the ee and ee
5 0
3 years ago
Very small changes in the solute concentrations in the various fluid compartments cause water to move from one compartment to an
Oksana_A [137]

Answer:

a. Decrease water reabsorption : decrease blood pressure.

b. Decrease peripheral resistance : decrease blood pressure

c. Vasodilation : decrease blood pressure

d. Decrease salt intake : decrease blood pressure

e. Decrease blood volume : decrease blood pressure

f. Vasoconstriction : increase blood pressure

g. Increase peripheral resistance:  increase blood pressure

h. Increase salt intake:  increase blood pressure

i. Increase blood volume : increase blood pressure

j. Increase water reabsorption: increase blood pressure

Explanation:

  • Total peripheral resistance: This term refers to the resistance offered by the vascular system to the blood flow.  This resistance is a result of the friction between the blood and the vessel's walls. In other words, it is the opposition of the vessels to blood flow. The total peripheral resistance is the summary of all the bloody circuit resistances in the body. Those mechanisms that induce vasoconstriction conduce to an increase in total peripheral resistance, while mechanisms that induce vasodilation provoke a decrease in total peripheral resistance.    
  • Blood pressure: This term refers to the strength applied by the blood against the vessel walls as it flows.  This pressure is determined by the bombed blood strength and the volume as well as by the vessel size and flexibility. Blood pressure changes continuously according to the activity, temperature, diet, emotional state, among others.    
  • Salt ingestion causes an increase in plasmatic osmolarity, stimulates thirst, and hence, water ingestion. Sodium retains water, expanding the blood volume and causing an increase in vessel pressure.
  • The antidiuretic hormone, also known as vasopressin hormone, is released by changes in serum osmolarity or blood volume. Its function is to keep homeostasis and make kidneys conserve or keep water by concentrating urine and by reducing its volume. By these actions, the antidiuretic hormone stimulates water reabsorption, according to the organism´s needs.
  • Kidneys control blood pressure in many ways. If the pressure is elevated, kidneys produce the loss of salt and water, normalizing arterial pressure. But if pressure is low, kidneys conserve water.          
3 0
3 years ago
The Sun is a significant factor that helps to support life. Which of the following Earth-Sun relationships is not true? The sun'
Usimov [2.4K]
<span> 4th planet from the Sun, which is a perfect distance to utilize the Sun's energy

</span>
5 0
4 years ago
Read 2 more answers
Flowering plants appeared <br> A.)Paleozoic<br> B.)Cenozoic<br> C.)Mesozoic
Troyanec [42]

Answer:

B

Explanation:

thats just what it is

6 0
3 years ago
Other questions:
  • What is selectively permaeble
    7·1 answer
  • What is a ferndock and what does Krenzled mean?
    12·1 answer
  • What process is affected by changing environment over time
    10·1 answer
  • A consumer that eat a variety of organisms, both plant and animals is called ___
    13·2 answers
  • A 26-year-old patient tells the nurse that the patient is afraid to use the treatment recommended for psoriasis because the pati
    14·1 answer
  • Given the gene sequence ACGGCATTCGTACGT, which of the following choices would represent an insertion mutation?
    6·2 answers
  • After taking antibiotics for several weeks, a patient develops a severe bacterial infection in his intestines. The doctor claims
    15·2 answers
  • What important event in translation happens after the incoming trna is in place?
    6·1 answer
  • Which type of bacteria causes tetanus?
    8·1 answer
  • What are the three base sequences on a tRNA molecule called?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!