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zimovet [89]
3 years ago
7

Determine whether the statement is true or false, and why? “Climate change could cause many habitats to be destroyed, leading to

the extinction of many plant species.”
A. False, it should read, “Climate change cannot cause habitats to be destroyed, and animal & plant species are not in danger.”
B. True
C. False, it should read, “Climate change could cause many habitats to be destroyed, leading to the extinction of many animal species.”
D. False, it should read, “Climate change could cause many habitats to be destroyed, leading to the extinction of many plant and animal species.”
Chemistry
1 answer:
77julia77 [94]3 years ago
8 0

Answer:

False. It should read that both plant and animal species are in danger of extinction, and climate change can destroy habitats.

Explanation:

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4. Arrange the following substances in order of increasing boiling point: CH3CH2OH, HOCH2CH2OH, CH3CH2Cl , and ClCH2CH2OH A. CH3
Studentka2010 [4]

Answer: Option (B) is the correct answer.

Explanation:

A molecules that will have more number of hydrogen bonding will has highest boiling point because to break the hydrogen bonds high heat needs to be provided.

So, in the molecule HOCH_{2}CH_{2}OH there is presence of two alcoholic groups. Hence, it will have strongest hydrogen bonding as compared to the rest of molecules.

In the molecule ClCH_{2}CH_{2}OH there will be hydrogen bonding and dipole-dipole interactions. Hence, it boiling point will be slightly less than HOCH_{2}CH_{2}OH.

In the molecule CH_{3}CH_{2}OH, there will be only hydrogen bonding. Hence, its boiling point is less than ClCH_{2}CH_{2}OH.

In the molecule CH_{3}CH_{2}Cl, there is no hydrogen bonding but there will be only dipole-dipole interactions. Hence, its boiling point will be the least.

Therefore, we can conclude that increasing order of boiling point will be as follows.

        CH_{3}CH_{2}Cl < CH_{3}CH_{2}OH < ClCH_{2}CH_{2}OH < HOCH_{2}CH_{2}OH

6 0
3 years ago
15. Nadia wrote the following sentence in her report on Pluto: "Pluto is a dwarf planet because it has a spherical shape
snow_tiger [21]

Answer:

B. Pluto's orbit is not clear of other objects

Explanation:

Pluto is a dwarf planet and considered as ninth planet of the solar system.

A large body whose orbit do not clear the neighbourhood is classified as a dwarf planet. The gravity of Neptune limit the orbit of Pluto and shares its orbital neighbourhood with many Kuiper belt objects.

Hence, the correct answer is "B. Pluto's orbit is not clear of other objects".

7 0
3 years ago
Why will an increase in temperature increase the rate at which particles move
Alex73 [517]

Answer:

Explanation:

increasing the temperature increases the kinetic energy of the particles (the movement) making them move at a higher rate.

6 0
3 years ago
What information does a net ionic equation give?
katen-ka-za [31]

Answer:

C. It lists only the substances that are changed.

Explanation:

Balanced Chemical equation:

HClO₂(aq) + NaOH(aq) → H₂O(l) + NaClO₂ (aq)

Ionic equation:

H⁺(aq) + ClO₂⁻(aq) + Na⁺(aq) + OH⁻(aq) → H₂O(l) + Na⁺(aq) + ClO₂⁻ (aq)

Net ionic equation:

H⁺(aq) + OH⁻(aq) → H₂O(l)  

The ClO₂⁻(aq) and Na⁺ (aq) are spectator ions that's why these are not written in net ionic equation. The water can not be splitted into ions because it is present in liquid form.  This'e why it is written in net ionic equation.

Spectator ions:

These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.  

3 0
3 years ago
I need help...................
Irina-Kira [14]
With what? There’s no question or photo
6 0
3 years ago
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