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Vladimir79 [104]
3 years ago
7

A body of knowledge must be _____ in order to be considered science.

Chemistry
1 answer:
Law Incorporation [45]3 years ago
5 0
The correct answer is realistic and reliable
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How many liters of a 0.0550 M NaF solution contain 0.163 moles of NaF?
Kobotan [32]

Answer : The volume of solution will be 2.96 liters.

Explanation :

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}

In this question, the solute is NaF.

Now put all the given values in this formula, we get:

0.0550M=\frac{0.163mole}{\text{Volume of solution (in L)}}

\text{Volume of solution (in L)}=\frac{0.163mole}{0.0550M}

\text{Volume of solution (in L)}=2.96L

Therefore, the volume of solution will be 2.96 liters.

3 0
3 years ago
Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the
Alinara [238K]

Answer:

Electron loss is always associated with an increase in oxidation number- True

An exothermic reaction occurs when the energy required to break bonds in reactants is less than the energy released by bond formation in the products.  True

The concentrations of pure liquids and pure solids are never included in an equilibrium constant expression because such concentrations never change. True

Explanation:

Oxidation implies loss of electrons. When a specie looses electrons, its oxidation number increases. For instance; Fe(s) -----> Fe^2+(aq) + 2e implies an increase in oxidation number of Fe from 0 to +2.

In an exothermic reaction, the energy required to break the bonds in the reactants is less than the energy released when new bonds form in the products.

We do not include the concentrations of pure liquids and pure solids in the equilibrium constant expression because the concentration of these do not change significantly throughout the reaction.

3 0
3 years ago
Which of the following is not a major use of water?
Ivan

Answer:

international

Explanation:

because agricultural, industrial, residential

are major uses of water

6 0
3 years ago
How can carbon move from "land" to bodies of water? Describe the way human impact has lead to increased levels of CO2 in the atm
Soloha48 [4]

It begins with carbon moving from land to the atmosphere. Through combustion, carbon turns to gaseous carbon dioxide. When the atmosphere interacts with the hydrosphere, some of the carbon dioxides dissolves in the water as dissolved carbon dioxide. This can also happen through precipitation. Some of the dissolved carbon dioxides can react with water  into carbonic acid.



One way is through the burning of fossil fuels. One of the products of the burning of hydrocarbons is carbon dioxide.  Another is clearing of forests. Forests are major carbon sinks since trees sequester carbon dioxide from the atmosphere.


4 0
3 years ago
All bacteria is harmful?<br><br> True<br> False
Elenna [48]
False it is not all harmful
4 0
3 years ago
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