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zzz [600]
3 years ago
15

Enter the net ionic equation for this reaction. Express your answer as a net ionic equation. Identify all of the phases in your

answer. 2HCl(aq)+Ca(OH)2(aq) → 2H2O(l)+CaCl2(aq)
Chemistry
1 answer:
Lisa [10]3 years ago
6 0

Answer:

2H+(aq) + 2OH-(aq) → 2H2O(l)

Explanation:

Step 1: The balanced equation

2HCl(aq)+Ca(OH)2(aq) → 2H2O(l)+CaCl2(aq)

This equation is balanced, we do not have the change any coefficients.

Step 2: The netionic equation

The net ionic equation, for which spectator ions are omitted - remember that spectator ions are those ions located on both sides of the equation - will.

2H+(aq) + 2Cl-(aq) + Ca^2+(aq) + 2OH-(aq) → 2H2O(l) + Ca^2+(aq) + 2Cl-(aq)

After canceling those spectator ions in both side, look like this:

2H+(aq) + 2OH-(aq) → 2H2O(l)

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How many moles of gas occupy 98 l at a pressure of 2.8 atmospheres and a temperature of 292 k?
Furkat [3]
From the ideal gas equation, we know that PV = nRT
where, P = pressure, V = volume occupied, n = number of moles of gas, R = universal gas constant=0.082L atm mol-1 K-1 and T = temperature.
Given: P = 2.8 atm, V = 98 l and T = 292 k.
Therefore n =\frac{PV}{RT} = \frac{2.8 X 98}{0.082 X 292} = 11.46
6 0
3 years ago
Determine the frequency of radiation whose wavelength is 7.67 x 10^-7 cm. Then, determine the amount of energy in the radiation.
dimulka [17.4K]

Answer:

They frequency = 3.9 * 10^16 Hz

The amount of energy E = 2.58 *10^-17 J

Explanation:

Step 1: Data given

wavelength is 7.67 * 10^-7 cm

Step 2: Calculate the frequency

f = c / λ

⇒ with  λ = the wavelength in nm = 7.67 nm

⇒ with c = the speed of light  = 3.00 * 10^8 m/s

⇒ f = the frequency = TO BE DETERMINED

f = (3.00 * 10^8 m/s) / 7.67 * 10^-9 m

f = 3.9 * 10 ^16 /s = 3.9 * 10^16 Hz

They frequency is 3.9 * 10^16 Hz

Step 3: Calculate the amount of energy

E  =  h *f

⇒ with E = the amount of energy (in joule)

⇒ h = Planck's constant =  6.626  *10^-34 J*s

⇒ with f = the frequency

E =  6.626  *10^-34 J*s * 3.9 * 10^16 Hz

E = 2.58 *10^-17 J

8 0
3 years ago
How many molecules of ethane ( C2H6) are present in 0.197g of C2H6?
gayaneshka [121]

1

C2H6/C2H6=1

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8 0
4 years ago
How do the change of stress cause a shift in the equilibrium system of your solutions?
matrenka [14]

Answer:

Stress changes everything.

Explanation:

Stress can make people, animals, solids, liquids, gases, plasma and even solutions shift due to friction, anger, hatred and more.

3 0
3 years ago
What is the texture and appearance of oil
alexgriva [62]

Explanation:

yellow and slick

8 0
4 years ago
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