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
Kisachek [45]
3 years ago
8

Some animals that live in extremely cold environments protect themselves from freezing by increasing the molality of certain che

micals in their cells. Define molality and explain how it protects these animals.
Chemistry
1 answer:
lara [203]3 years ago
8 0
  • Molality is defined as the number of moles of solute dissolved per 1000g(1kg) of solvent.
  • It is represented by m

\\ \sf \longmapsto m=\dfrac{Moles\:of\:solute}{Wt\:of\:solvent(in\:g)}\times 1000

You might be interested in
How much of 45 grams of pu 234 remains after 27 hours if it’s half life is 4.98 hours
nadya68 [22]

Answer:

1.07 g

Explanation:

Half-life of Pu-234 = 4.98 hours

Initially present = 45 g

mass remains after 27 hours = ?

Solution:

Formula

         mass remains = 1/ 2ⁿ (original mass) ……… (1)

Where “n” is the number of half lives

To find "n" for 27 hours

                          n = time passed / half-life . . . . . . . .(2)

put values in equation 2

                          n = 27 hr / 4.98 hr

                          n = 5.4

Mass after 27 hr

Put values in equation 1

          mass remains = 1/ 2ⁿ (original mass)

          mass remains = 1/ 2^5.4 (45 g)

          mass remains = 1/ 42.2 (45 g)

          mass remains =  0.0237 x 45 g

          mass remains =  1.07 g

6 0
3 years ago
Why is it important to start at the zero mark of a ruler/meterstick + triple beam balance when making measurements?
sergeinik [125]
Because if you start at one for example you starting at a extra cm/m/mm. So when you get your measurement result it will be wrong by just one cm/m/mm. Hope this wasn't too confusing.
3 0
3 years ago
Difference between clinical and laboratory thermometer
Setler79 [48]

Answer:

1)clinical thermometer has temperature range 35 to 42degree celcius where labouratery thermometer has -10 to 110 degree celcius.

2)clinical thermometer is used to measure body temperature whare labouratory thermometer is not used to measure body temperature

7 0
3 years ago
Read 2 more answers
Which of the following is an ionic compound?<br> A. N2O B. CO C. HCL D. Na2O
zzz [600]

Answer:

D. Na2O

Because we already know that sodium oxide is a binary ionic compound because it contains one metal cation and one non-metal anion.

5 0
2 years ago
Read 2 more answers
What is the material used to make plaster of paris​
Natalija [7]

Gʏᴘsᴜᴍ ɪs ᴛʜᴇ ᴍᴀᴊᴏʀ ᴄᴏᴍᴘᴏɴᴇɴᴛ .

8 0
3 years ago
Read 2 more answers
Other questions:
  • What will be the product of the following acid-base reaction? H3O+(aq) + OH-(aq) ?
    14·1 answer
  • What best explains the type of energy present in the vibrating atoms of a substance
    5·1 answer
  • ______________ is a reaction that causes the growth of a polymer chain. In this reaction, a relatively small molecule is formed
    6·1 answer
  • How many moles are there in 140.2 g of Ca
    10·2 answers
  • How is the atomic mass of an element related to a mole?
    7·1 answer
  • How much aluminum oxide and how much carbon are needed to prepare 573 g of aluminum by the balanced chemical reaction (below) if
    5·2 answers
  • Plssss help asapp<br> will give brainliest!!!
    5·1 answer
  • When a 8 gram slice of bread is burned under a beaker of 4500 grams of water, it heats up the water by 1.3 degrees Celsius. The
    15·1 answer
  • a model of an atom shows eight electrons in rings that represent different energy levels. how many electrons are in each energy
    15·1 answer
  • Question 5 of 5
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!