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irina1246 [14]
2 years ago
10

Select the correct answer.

Chemistry
1 answer:
Fittoniya [83]2 years ago
7 0

Answer:

subscribe to me on you-tube for brainliest custom link since u cant do a you-tube link :/

https://screenshare.host/B7N8NT

Explanation:

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What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)?
Travka [436]
That would be A.

2.5*2*10^(10-7)=5*10^3
7 0
3 years ago
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which of the following compounds exhibits dipole -dipole forces as its strongest attraction between molecules? o2,ch3Br,CCl4,He,
Archy [21]

Answer:

B. CH3Br

Explanation:

Dipole -Dipole interactions take place in polar molecules.

CH3Br exhibits dipole -dipole forces as its strongest attraction between molecules because it is a polar molecule due to the slightly negative dipole present on the Br molecule.

While O2 is a nonpolar molecule due to its linear structure, CCl4 has zero resultant dipole moment, Helium is non-polar and BrCH2CH2OH is a non polar compound having net dipole moment is zero.

Hence, the correct option is B. CH3Br.

3 0
3 years ago
Help me pls I will mark you as brain
Liono4ka [1.6K]

Answer:

D. 1, 2, and 3

Explanation:

6 0
3 years ago
Consider a balloon of nitrogen gas and a crystal of sugar sitting on a table at room conditions. Select the appropriate statemen
yKpoI14uk [10]

Answer:

about the same

Explanation:

Thermal energy is constant at a certain temperature in general. The energy is denoted by K_BT

Where,

K_B is the Boltzmann constant

T is the absolute temperature

Given that the balloon filled with nitrogen gas and the crystal of sugar are at room conditions means that they have same conditions and thus they will possess same energy irrespective of the states of the matter.

Thus,

The thermal energy of the sugar molecules is <u>about the same</u> as that of nitrogen molecules.

6 0
3 years ago
Outline the two main observations that led Wegener to propose the theory of continental drift. (in ur own words)
Reil [10]

Answer:

Due to the known fact that certain animal ect lived on certain country/continents due to climate water type ect when fossils of various animal where found in unusual parts of the earth the theory came that all the continent where joined together due to fossil and rock types being found on continents in which would be impossible to reach if not joined together in the beginning

Explanation:

I

3 0
3 years ago
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