Ask question

Ask question

All categories

marshall27 [118]

3 years ago

14

How many water molecules self ionize in one liter of water

1 answer:

Drupady [299]3 years ago

5 0

Answer:

yes

Explanation:

because I think it is correct fo u

You might be interested in

Consider the reaction when aqueous solutions of chromium(III) chloride and ammonium sulfide are combined. The net ionic equation

Dominik [7]

Answer:

2Cr³⁺(aq) + 3S²⁻(aq) ----> Cr₂S₃(s)

Explanation:

When aqueous solutions of chromium(III) chloride and ammonium sulfide are mixed together, chromium (III) chloride and ammonium sulfide undergoes a double displacement reaction to produce chromium (iii) sulphide as a precipitate and ammonium chloride which remains in solution.

The general equation of the reaction is given below:

2CrCl₃(aq) + 3(NH₄)₂S(aq) ----> Cr₂S₃(s) + 6NH₄Cl(aq)

The net equation of the reaction is given below:

2Cr³⁺(aq) + 3S²⁻(aq) ----> Cr₂S₃(s)

7 0

3 years ago

14. What is the total number of kilojoules of heat needed to change 150. G of

Nadusha1986 [10]

Answer:

$\boxed {\boxed {\sf 50.1 \ kJ}}$

Explanation:

When water changes from ice (solid) to water (liquid), it is melting or fusion. Therefore, we can use the following formula to find energy:

$q=mH_f$

where <em>q</em> is the energy, <em>m </em>is the mass, and <em>Hf</em> is the heat of fusion.

1. Define Values

The mass is 150 grams. The heat of fusion for water is 334 Joules per gram.

$m= 150 \ g \\H_f=334 \ J/g$

2. Calculate Energy

Substitute the values into the formula.

$q=150 \ g * 334 \ J/g$

Multiply. Note that the grams (g) will cancel each other out and leave Joules as our units.

$q=150 *334 \ J$

$q=50100 \ J$

3. Convert Units

We found the answer in joules, but the question asks for kilojoules, so we must convert.

There are 1000 Joules in 1 kilojoule. Therefore, we can divide the joules calculated by 1000.

$50100 \ J *\frac{1 \ kJ}{1000 \ J}$

$\frac{50100 \ kJ}{1000 \ }$

$50.1 \ kJ$

<u>50.1 kilojoules </u>are needed to change 150 grams of ice to water.

8 0

3 years ago

Inferences are A. never made by scientists. B. questions that are made by studying conclusions or predictions. C. exactly the sa

bekas [8.4K]

The Answer Is D. Have A Great Day

7 0

3 years ago

Does anyone know how to do this for Carbon Dioxide ?

elixir [45]

Answer: AmOnG uS

Explanation: It must be red he looking kind of sus

4 0

3 years ago

(6) A mixture of 40.0 g of oxygen and 40.0 g of helium has a total pressure of 0.900 atm.

Elena L [17]

Answer:

Partial pressure of oxygen $= 0.100$ atm

Partial pressure of Helium $= 0.800$ atm

Explanation:

We will first find the number of moles of each gas

The molar mass of oxygen is $32$ grams per mole

The molar mass of helium is $4$ grams per mole

The number of moles of oxygen in the solution

$\frac{40}{32} \\1.25$

The number of moles of helium in the solution

The number of moles of oxygen in the solution

$\frac{40}{4}\\10$

Total number of moles in the solution is equal to

$10 + 1.25 \\11.25$

Partial pressure of oxygen

$\frac{1.25 }{11.25} * 0.900$ atm

$= 0.100$ atm

Partial pressure of Helium

$\frac{10 }{11.25} * 0.900$ atm

$= 0.800$ atm

5 0

3 years ago