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hodyreva [135]
4 years ago
13

Frozen water is less dense than liquid water, allowing lake organisms to survive winter.

Chemistry
2 answers:
klasskru [66]4 years ago
7 0

True.

hope this helps!

irina1246 [14]4 years ago
4 0

Answer: True.

Explanation: The density of ice is less than the density of water, this is the reason why the ice floats on water. The frozen ice is about 9% less denser than the water in liquid state.

The ice seems to be on the top of the water bodies as it is lighter. The organisms seems to use this property of water and lives inside the lakes.The water is not that cold as it is on the surface so, it provides an optimum temperature for the organism to stay inside the water bodies.

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A student placed 2 drops of an unknown sample in a test tube and added 2 mL of ethanol to the test tube while mixing gently. The
Tatiana [17]

Answer:

2-propanol

Explanation:

From the given information

2 drops of an unknown sample were said to be placed in a test tube followed by the addition of 2 ml of ethanol then gentle mixing. They then initiate a further addition of  2 drops of potassium permanganate reagent (KMNO₄) to the test tube and mixed the contents of the test tube thoroughly. After adding 2 drops of potassium permanganate reagent, the reagent oxidizes the secondary alcohols(2-propanol) to ketone(i.e acetone) and no further reaction will take place since there are no reactive C-H bonds left. The diagram attached below shows how the reaction proceeds.

3 0
3 years ago
What volume would 8.01×1022 molecules of an ideal gas occupy at STP?
Nataly_w [17]

Explanation:

8.01 \times  {10}^{22}  \times  \frac{1}{6.02 \times  {10}^{23} }  \times  \frac{22.4}{1}  = 2.9804

5 0
3 years ago
Does this question make sense or am I going mad?
postnew [5]
I think that is right
5 0
3 years ago
D
cestrela7 [59]

Answer:

1. Mom and Dad provide my basic needs.($)

2. Security is the priority of my parents.($)

3. Parents give love and care to their children.($)

4. We live under the bridge because our parents are jobless.(P)

5. I get what I want from my parents.​($)

Explanation:

Yes, Mom and Dad provide my basic needs and provides everything which I need in my life. They provide security and love to their children. They do everything for our happiness and success. They sacrifices their dreams for their children and work day and night to give a good life to their children so parents are the blessing of God and we should respect and take care in their older age.

8 0
3 years ago
If you had 100 ml of juice, how many milliliter would de fruit juice?
Julli [10]
Since the measurement is not changing, the answer is 100 mL. Hope this helps.
8 0
4 years ago
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