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
il63 [147K]
3 years ago
11

A panic attack can occur at anytime even in the absence of a stimulus.

Chemistry
2 answers:
juin [17]3 years ago
5 0

Answer:

True

Explanation:

san4es73 [151]3 years ago
3 0
True, a person can have free floating anxiety that can trigger a panic attack without there being a specific stimulus.
You might be interested in
How many electrons are in the highest occupied energy level of a neutral chlorine atom?
tino4ka555 [31]
There are seven electrons
5 0
3 years ago
Read 2 more answers
Please help asap
Helen [10]
C. carbon
sodium is an
oxygen is o
cl is chlorine
4 0
3 years ago
A piece of lead with a mass of 14.9 grams at a temperature of 92.5 degrees Celsius is dropped into an insulated container of wat
Vesna [10]

the specific heat of lead is

6 0
3 years ago
Read 2 more answers
How does the appearance of<br> the protist differ from that of the onion sample?
lana [24]

The appearance of the protist differ from that of the onion sample due to the presence of motile structures.

<h3>What is a Protist?</h3>

This is an eukaryote which could be unicellular or multicellular and examples include protozoa etc.

The major difference between a protist and onion sample is that protists have motile structures such as flagella, cilia etc while plant cells such as onions don't have.

Read more about Protist here brainly.com/question/2169979

#SPJ1

8 0
2 years ago
g A solution contains 100mM NaCl, 20mM CaCl2, and 20mM urea. We would say this solution is __________ compared to a 300 mOsM sol
ICE Princess25 [194]

Answer:

A solution contains 100mM NaCl, 20mM CaCl2, and 20mM urea. We would say this solution is hypotonic compared to a 300 mOsM solution and hypotonic compared to a cell with 300 mOsM (non-penetrating solutes) interior.

Explanation:

The osmolarity is calculated from the molar concentration of the active particles in the solution. We have a solution that is composed of NaCl, CaCl₂ and urea.

When they are dissolved in water, they dissociate into particles as follows:

NaCl → Na⁺ + Cl⁻  (2 particles per compound)

CaCl₂ → Ca²⁺ + 2 Cl⁻ (3 particles per compound)

urea: not dissociation (1 particle per compound)

Then, we have to calculate the osmolarity of the solution. We multiply the molarity of each compound by the number of particles produced by the compound in water:

Osm = (100 mM NaCl x 2) + (20 mM CaCl₂ x 3) + (20 mM urea x 1) = 280 mOsm

Compared with 300 mOsm, 280 mOsm has a lower osmolarity, so it is a hypotonic solution.

To compare with a cell's osmolarity, we have to consider only the non-penetrating solutes. Urea is considered a penetrating solute for mammalian cells. So, the osmolarity of non-penetrating solutes (NaCl  and CaCl₂) is calculated as:

Osm (non-penetrating solutes) = (100 mM NaCl x 2) + (20 mM CaCl₂ x 3) = 260 mOsm

Therefore, we have:

Compared to 300 mOsm solution ⇒ 280 mOsm solution is a hypotonic solution

Compared to a cell with 300 mOsm ⇒ 260 mOsm solution is hypotonic

4 0
3 years ago
Other questions:
  • A colloidal liquid suspended in a gas is called an aerosol.<br> true or false
    10·2 answers
  • What metallic element is sometimes used in flares because it burns bright?
    5·2 answers
  • What is the balanced equation for solid ammonium nitrate (NH4NO3) decomposes explosively to form nitrogen gas, oxygen gas, and w
    12·1 answer
  • 2. A gas has volume of 4.2L at 110 kPa. If temperature is constant, find the pressure of gas when the volume is change to 11.3L.
    12·1 answer
  • You have 125 g of a certain seasoning and are told that it contains 70.0 g of salt. What is the peroentage of salt by mass in th
    6·2 answers
  • How is matter conserved in a chemical reaction
    12·2 answers
  • Which chemical substance has the highest melting point? a) gold b) water c) oxygen d) mercury
    5·2 answers
  • What are the thee types of weak bonding ​
    11·1 answer
  • Well, we might as well try a similar question. Magnesium metal reacts with hydrochloric acid to produce hydrogen gas and an aque
    15·1 answer
  • M= 2 kg, a = 2 m/s^2. <br><br> Find F
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!