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Lunna [17]
3 years ago
5

Consider the word equation. calcium hydroxide + hydrochloric acid mc012-1.jpg calcium chloride + water Which is the correspondin

g formula equation?
Chemistry
2 answers:
Inga [223]3 years ago
5 0
<span>Ca(OH)2(s) + 2HCI(l) -> CaCl2(aq) + 2H2O(l)</span>
natka813 [3]3 years ago
3 0
<h3>Answer </h3>

Ca(OH)2 (s) + 2HCl (aq) = CaCl2 (aq)+ 2H2O (l)

<h3>Explanation </h3>

Calcium hydroxide is a fairly strong base, and hydrochloric acid is a strong acid. The two substances readily react with and neutralise each other, forming the soluble salt calcium chloride (CaCl2) and water. This reaction is called neutralization.

In this reaction one mole of calcium hydroxide react with 2 mole of hydrochloric acid to produce one mole of calcium chloride and 2 mole of water.

The calcium hydroxide and hydrochloric acid break down to form ions.

• Ca(OH)2  ----------------> Ca2+  +  2OH-

• HCL. -------------> H+  +  Cl+

So there occurs the ion exchange method and the overall chemical equation is as follows.

• Ca(OH)2  +  2HCL. ----------->  CaCl2  +  2 H2O


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Calculate the molar concentration of the Cl⁻ ions in 0.65 M CaCl2(aq), assuming that the dissolved substance dissociates complet
alexandr1967 [171]
The question here is solved using basic chemistry. CaCl2(aq) is an ionic compound which will have the releasing of 2 Cl⁻ ions ions in water for every molecule of CaCl2 that dissolves.
CaCl2(s) --> Ca+(aq) + 2 Cl⁻(aq)
            [Cl⁻] = 0.65 mol CaCl2/1L × 2 mol Cl⁻ / 1 mol CaCl2 = 1.3 M
The answer to this question is [Cl⁻] = 1.3 M
5 0
4 years ago
Molecules have ionization energies, just like atoms do. The ionization energy for molecular oxygen, for example, is 1314 kJ/mol.
taurus [48]

Answer:

91.1835 nm

Explanation:

Given that the ionization energy of the oxygen molecule = 1314 kJ/mol

It means that

1 mole of oxygen molecules can be ionized by the energy = 1314 kJ = 1314000 J

1 mole of molecules contains 6.022 × 10²³ atoms

So,

6.022 × 10²³ atoms of oxygen molecules can be ionized by the energy = 1314000 J

1 atom require \frac{1314000}{6.022\times 10^{23}}\ J of energy

Energy = 2.18\times 10^{-18}\ J

Also

E=\frac {h\times c}{\lambda}

Where,  

h is Plank's constant having value 6.626\times 10^{-34}\ Js

c is the speed of light having value 3\times 10^8\ m/s

\lambda is the wavelength

So,

\lambda=\frac {h\times c}{E}

\lambda=\frac{6.626\times 10^{-34}\times 3\times 10^8}{2.18\times 10^{-18}}\ m

\lambda=91.1835\times 10^{-9}}\ m

Also,

1\ nm=10^{-9}}\ m

So, wavelength = 91.1835 nm

6 0
3 years ago
What is the difference between a heterogeneous mixture and homogeneous mixture?
Fiesta28 [93]
A homogeneous mixture has the same uniform appearance and composition throughout


A heterogeneous mixture consists of visibly different substances or phases.
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3 years ago
How many grams of calcium carbonate, CaCO3, contain 48 grams of oxygen atoms?
Tamiku [17]

Answer:

(40 g O) / (15.99943 g O/mol) x (1 mol CaCO3 / 3 mol O) x (100.0875 g CaCO3/mol) =  

83 g CaCO3

So answer D), although three significant digits are not justified.

Your welcome! Please give me brainiest and have a Great day! <3

7 0
3 years ago
Even though cities may be located at approfimately the same latitude, why might the
Reil [10]

C. Warm ocean currents bring warmer temperatures to coastal cities

5 0
3 years ago
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