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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

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The density of mercury is 5,427 kg/m3. If the density of water is 1.0 g/mL, will mercury float or sink in water?
Ksenya-84 [330]
1 kg =1000 g = 10³ g,
1 m = 100 cm  ,
(1m)³  = (100 cm)³= (10²)³ cm³ = 10⁶ cm³  or 10⁶ mL

5,427 kg/m³ = <span>5,427 kg/ 1m³ = (5427 * 10³ g)/ 10⁶ mL=5427/10³ g/mL=
=5427/1000 g/mL = 5.427 g/mL 

</span>5.427 g/mL   is density of Mercury, and 1.0 g/mL is density  of water.
Density of Mercury is more then density of the water, so
mercury will sink in the water.
3 0
3 years ago
Read 2 more answers
Help anyone can help me do this question,I will mark brainlest.​
Anettt [7]

Answer:

12 grams

Explanation:

if  you used the transformation equation  you would end up with 12 grams

4 0
3 years ago
If you begin with 4.0 grams of hydrogen and all of the oxygen that you need, how many grams of water can you make?​
yawa3891 [41]

    the water is 36 grams.

hope this helped

7 0
3 years ago
Name three pure elements and three pure compounds​
VARVARA [1.3K]

Answer:

Pure elements:

Hydrogen(H)

Nitrogen(N)

Magnesium (Mg)

Pure Compounds:

Oxygen gas(O2)  

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Explanation:

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5 0
3 years ago
6th grade science . :((
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Answer:

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