4 years ago

Animals need food air and water.which of the following is another need of animals

Chemistry

2 answers:

Readme [11.4K]4 years ago

6 0

Answer:

a habitat

Explanation:

Law Incorporation [45]4 years ago

3 0

a sanctuary could be one of them

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Dmitrij [34]

Answer:

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hablemos por g mail

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3 years ago

Which of the following is considered a greenhouse gas?

Sergeeva-Olga [200]

The primary greenhouse gases are water vapor, carbon dioxide, methane, nitrous oxide, and ozone. So, the correct answer among these options is water vapor, that is considered to be a greenhouse gas.

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3 years ago

A 32.5 g iron rod, initially at 22.4 ∘C, is submerged into an unknown mass of water at 63.0 ∘C, in an insulated container. The f

a_sh-v [17]

Answer:

$m_{H_2O}=39.0g$

Explanation:

Hello,

In this case, is possible to infer that the thermal equilibrium is governed by the following relationship:

$\Delta H_{iron}=-\Delta H_{H_2O}\\m_{iron}Cp_{iron}(T_{eq}-T_{iron})=-m_{H_2O}Cp_{H_2O}(T_{eq}-T_{H_2O})$

Thus, both iron's and water's heat capacities are: 0.444 and 4.18 J/g°C respectively, so one solves for the mass of water as shown below:

$m_{H_2O}=\frac{m_{iron}Cp_{iron}(T_{eq}-T_{iron})}{-Cp_{H_2O}(T_{eq}-T_{H_2O}} \\\\m_{H_2O}=\frac{32.5g*0.444\frac{J}{g^0C}*(59.7-22.4)^0C}{-4.18\frac{J}{g^0C}*(59.7-63.0)^0C} \\\\m_{H_2O}=39.0g$

Best regards.

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3 years ago

If the number of moles of gas is doubled at constant temperature and volume, the pressure of the gas:__________

Vladimir79 [104]

Answer:

answer is b

use pv=nRT

p directly proportional to moles(n)

p1/p2=n1/n2

p/p2=n/2n

p2=2p

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3 years ago

Hey can someone help me figure out what ph of ajax cleaner and what color it changes to?

serious [3.7K]

I just know the ph is between 7 and 8

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3 years ago