3 years ago

Thre largest source of available freshwater on earth is

Chemistry

2 answers:

Burka [1]3 years ago

6 0

Ice caps so it would be D

Hope it helps :-)

olganol [36]3 years ago

4 0

Answer:

<h2><em>aquifers</em></h2>

Explanation:

because i took the exam already

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If 3 moles of a compound use 12 J of energy in a reaction, what is the Hreaction in kJ/mol

igomit [66]

Answer:

$\Delta _RH=4x10^{-3}\frac{kJ}{mol}$

Explanation:

Hello,

In this case, the molar enthalpy of reaction is obtained by dividing the involved energy by the reacting moles:

$\Delta _RH=\frac{12J}{3mol} =4\frac{J}{mol}$

Thus, it is important to notice that the compound "uses" the energy, it means that it absorbs the energy, for that reason the sign is positive. Moreover, computing the result in kJ/mol we finally obtain:

$\Delta _RH=4\frac{J}{mol}*\frac{1kJ}{1000J} =4x10^{-3}\frac{kJ}{mol}$

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2 years ago

A student wants to investigate abiotic factors that affect tomato plants.

Julli [10]

Since abiotic is a non living factor B would be the answer because water is abiotic

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2 years ago

Please help with this question.

marysya [2.9K]

Answer:

It is C.

Explanation:

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2 years ago

Calculate the average obtained from the following weighings of the same object. Do not forget to include formulas, units, and th

bazaltina [42]

Answer:

10.4376 g

Explanation:

First we <u>calculate the sum of the weighings</u>:

10.4375 g + 10.4381 g + 10.4373 g + 10.4376 g = 41.7505 g

Then we <u>divide the sum by the number of weighings to calculate the average:</u>

Number of weighings = 4

Average = Sum of weighings / Number of weighings

41.7505 g / 4 = 10.4376 g

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2 years ago

During the process of cellular respiration, water becomes oxygen.<br><br> True<br> False

White raven [17]

Answer:

False

Explanation:

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3 years ago

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