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3 years ago

What are the chemical properties of water?

2 answers:

7 0

It is form in acid base reaction. Water produce OH- ion and H+ ion. Hydrogen ion is then combine with a cation ion(positive) and anion ion(negative) to produce water . Hope it helps.

Bezzdna [24]3 years ago

6 0

It's a compound of hydrogen and oxygen

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Determine the volume at STP of 36.8 g of nitrogen dioxide(NO2)

Anarel [89]

Answer:

17.92L

Explanation:

7 0

3 years ago

Calculate the mass of Na2O that can be produced by the chemical reaction of 4.0 grams of sodium with excess oxygen in the reacti

e-lub [12.9K]

Answer:

The mass of Na₂O that can be produced by the chemical reaction of 4.0 grams of sodium with excess oxygen in the reaction is 5.39 grams.

Explanation:

You know the balanced reaction:

4 NA + O₂ ⟶ 2 Na₂O

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) react and are produced:

Na: 4 moles
O₂: 1 mole
Na₂O: 2 moles

Being:

Na: 23 g/ole
O: 16 g/mole

the molar mass of the compounds participating in the reaction is:

Na: 23 g/mole
O₂: 2*16 g/mole= 32 g/mole
Na₂O: 2*23 g/mole +16 g/mole= 62 g/mole

Then by stoichiometry of the reaction they react and are produced:

Na: 4 moles* 23 g/mole= 92 g
O₂: 1 mole*32 g/mole= 32 g
Na₂O: 2 moles* 62 g/mole= 124 g

Then you can apply the following rule of three: if 92 grams of Na produce 124 grams of Na₂O, 4 grams of Na, how much mass of Na₂O does it produce?

$massofNa_{2}O =\frac{4 grams of Na*124 gramsofNa_{2}O }{92 grams of Na}$

mass of Na₂O=5.39 g

<em><u>The mass of Na₂O that can be produced by the chemical reaction of 4.0 grams of sodium with excess oxygen in the reaction is 5.39 grams.</u></em>

8 0

2 years ago

What is the product of the following chemical equation?

g100num [7]

Answer: carbon dioxide and water

Explanation:

C3H8 + 5O2 —> 3CO2 + 4H2O

6 0

2 years ago

which of the following questions can use science as a method of inquiry? a. is cloning appropriate b. how can we protect crops f

inessss [21]

Answer: b. how can we protect crops from drought

Explanation:

A scientific inquiry can be define as the fact finding inquiry in which query related to a scientific phenomena is answered by implementing a suitable scientific methodology.

Among the options given, b. how can we protect crops from drought is the correct option this is because of the fact that this can be answered by using suitable scientific experimental procedure. As drought is a natural phenomena it is expected to leave it's impact over the growth of crops as in drought crops may face scarcity of water which can limit the growth.

8 0

2 years ago

Consider the reaction below.

r-ruslan [8.4K]

Answer:

Kc = 0.042

Explanation:

PCl₅ → PCl₃ + Cl₂

The equilibrium constant's equation will be

Kc = [PCl₃] [Cl₂] / [PCl₅]

Kc = (0.02 x 0.02) / 0.0095

Kc = 0.0421

The equilibrium constant for the given reaction is 0.0421.

3 0

3 years ago

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