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
likoan [24]
3 years ago
13

_____ is a control mechanism that intensifies an earlier reaction. A sensory receptor An effector Negative feedback Positive fee

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

<u>The sensory receptors are nerve endings or specialized cells able to capture internal or external stimuli, and generate in response nerve impulses. </u>

<u><em>The answer is</em></u>: <u>A sensory receptor</u>.

EastWind [94]3 years ago
4 0
Positive feedback is the answer.
You might be interested in
A 1.0-L buffer solution is 0.10 M in HF and 0.050 M in NaF. Which action destroys the buffer? (a) adding 0.050 mol of HCl (b) ad
Volgvan

Answer:

(a) adding 0.050 mol of HCl

Explanation:

A buffer is defined as the mixture of a weak acid and its conjugate base -or vice versa-.

In the buffer:

1.0L × (0.10 mol / L) = 0.10 moles of HF -<em>Weak acid-</em>

1.0L × (0.050 mol / L) = 0.050 moles of NaF -<em>Conjugate base-</em>

-The weak acid reacts with bases as NaOH and the conjugate base reacts with acids as HCl-

Thus:

<em>(a) adding 0.050 mol of HCl:</em> The addition of 0.050moles of HCl produce the reaction of 0.050 moles of NaF producing HF. That means after the reaction, all NaF is consumed and you will have in solution just the weak acid <em>destroying the buffer</em>.

(b) adding 0.050 mol of NaOH: The NaOH reacts with HF producing more NaF. Would be consumed just 0.050 moles of HF -remaining 0.050 moles of HF-. Thus, the buffer <em>wouldn't be destroyed</em>.

(c) adding 0.050 mol of NaF: The addition of conjugate base <em>doesn't destroy the buffer</em>

3 0
3 years ago
How many mm are in 3.6 km?
Rainbow [258]

Answer:

3.6km = 3.6e+6mm

Explanation:

6 0
2 years ago
Read 2 more answers
Raw meat can spread pathogens. Which statement describes the best way to prevent the spread of foodborne illness?
Archy [21]
C.) wash hands, utensils, and surfaces with hot soapy water
7 0
3 years ago
Read 2 more answers
In a constant‑pressure calorimeter, 60.0 mL of 0.300 M Ba ( OH ) 2 was added to 60.0 mL of 0.600 M HCl . The reaction caused the
densk [106]

Answer:

Q sln = 75.165 J

Explanation:

a constant pressure calorimeter:

  • Q sln = mCΔT

∴ m sln = m Ba(OH)2 + m HCl

∴ molar mass Ba(OH)2 = 171.34 g/mol

∴ mol Ba(OH)2 = (0.06 L)(0.3 mol/L) = 0.018 mol

⇒ mass Ba(OH)2 = (0.018 mol)(171.34 g/mol) = 3.084 g

∴ molar mass HCl = 36.46 g/mol

∴ mol HCl = (0.06 L)(0.60 mol/L) = 0.036 mol

⇒ mass HCl = (0.036 mol)(36.46 g/mol) = 1.313 g

⇒ m sln = 3.084 g + 1.313 g = 4.3966 g

specific heat (C):

∴ C sln = C H2O = 4.18 J/g°C

∴ ΔT = 26.83°C - 22.74°C = 4.09°C

heat absorbed (Q):

⇒ Q sln = (4.3966 g)(4.18 J/g°C)(4.09°C)

⇒ Q sln = 75.165 J

8 0
3 years ago
List one reason as to why historical growth has slowed in recent years.
hodyreva [135]
Lower fertility and longer lifespans steadily increased the potential labor force relative to the total population
4 0
3 years ago
Other questions:
  • A 0.055 mol sample of formaldehyde vapor, CH2O, was placed in a heated 500 mL vessel and some of it decomposed. The reaction is
    5·1 answer
  • Which statement about the orinoco river is true.
    8·2 answers
  • How can the electromagnetic force be increased? What different things affect the magnetic strength?
    11·1 answer
  • What is the term for the concentration expression that relates the moles of solute dissolved in each liter of solution?
    14·1 answer
  • FREE POINTS no question
    7·2 answers
  • List three of Rutherford’s major achievements that helped earn him the title “Father of Nuclear Physics.”
    8·2 answers
  • A cyclist accelerates from 0m/s to 8 m/s in 3 seconds . what is his acceleration ?
    6·1 answer
  • The primary use of alkanes is Question 8 options: A) drugs. B) combustion as fuels. C) food. D) polymers.
    10·1 answer
  • Pleeeeasee someone who’s good at chemistry?! 10 grade
    11·1 answer
  • Speed is defined as __________.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!