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KatRina [158]
4 years ago
8

MARKING BRAINLIEST Think about the fact that water is most dense at 4°C, and the fact that ice is much less dense than

Chemistry
2 answers:
IgorC [24]4 years ago
7 0

Answer:

mark them brainyist

Explanation:

max2010maxim [7]4 years ago
5 0

Answer:

See Explanation

Explanation:

a) If water is not most dense at 4°C, then the entire lake or pond will simply freeze bottom-up during winter thereby leading to the death of all the aquatic organisms inside the pond.

b) If the solid ice was more dense than water then it will sink inside the water thereby making room for the water to continue to freeze until all the water in the lake or pond will be converted to ice.

c) If the scenario described in (a) and (b) above occurs, the lake will simply cease to exist because all the living organisms in it will die and begin to decay after the ice has melted after the winter season thereby leading to a complete loss of the lake or pond.

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Metals have special bonds, between atoms. The valence electrons are mobile and are shared by all metal atoms present.
lys-0071 [83]

Answer:

High conductivity

Explanation:

Metals exhibit high conductivity due to the mobility of valence electrons.

8 0
3 years ago
Draw the correct structural formula for the following compounds:
Anvisha [2.4K]

Answer:

Explanation:

a) H3C-CH=CH-CH2-CH3

b)     CH3                     CH3

         |                           |

CH3-C-     CH- CH2-   CH-CH3

        |         |  

      C2H5  C2H5

c)                 C2H5

                    |

CH3-C=CH-CH-CH2-CH-CH3

         |                          |

        CH3                    CH3

6 0
4 years ago
The element Osminum has a density of 22.6 g/cm3. the mass of a block of Osmium with three sides of 1.01cmx0.223 cm x 0.648 cm is
Alika [10]
Volume of osmium = 1.01(0.223)(0.648) = 0.14595 cm3

Density = mass / volume
So density x volume = mass of osmium
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6 0
3 years ago
A student creates a ball-and-stick model to represent the atomic scale of a substance. Which of the following best describes the
laila [671]
Answer is: <span>A. 1 molecule with 10 atoms.
Every ball represent one atom in one molecule.
</span><span>The </span>ball and stick model<span> is a </span>molecular model<span> of a </span>chemical substance<span> that shows the </span>three-dimensional<span> position of the </span>atoms<span> and the </span>bonds between them. <span>The atoms have spherical shape and they are </span><span>connected with sticks (one, two or three, depends on bonds).</span>
5 0
3 years ago
Read 2 more answers
CAN YOU HELP ME WITH THIS?????????????????????????????????????? ????????????????????????????????????????????????????????????????
maria [59]

PV=nRT  

P = 85.0 x 10^3 Pa  

T = 273 + 20 = 293 K  

n = 2.0 moles  

R = 8.314 m3. pa / mol .K  

V = 2.0 x 293 x 8.314 / 85.0x10^3 =  0.195623529 m^3

6 0
3 years ago
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