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Bad White [126]
3 years ago
6

How any moles of H2O will be produced from 12.3 moles of HCL reacting with Ca(OH)2?

Chemistry
1 answer:
stiks02 [169]3 years ago
3 0

Answer:

\large \boxed{\text{12.3 mol HCl}}  

Explanation:

We need a balanced chemical equation with moles.

            2HCl +Ca(OH)₂ ⟶ CaCl₂ + 2H₂O

n/mol:    12.3

The molar ratio is 2 mol H₂O:2 mol HCl.

\text{Moles of H$_{2}$O} = \text{12.3 mol HCl} \times \dfrac{\text{2 mol H$_{2}$O}}{\text{2 mol HCl}} = \textbf{12.3 mol HCl}\\\\\text{The reaction produces $\large \boxed{\textbf{12.3 mol HCl}}$}

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Which property describes a material's ability to conduct heat?
Oduvanchick [21]
Answer )
Thermal conductivity

Explanation)

Thermal conductivity is the ability of a material to conduct heat, and it represents the quantity of thermal energy that flows per unit time through a unit area with a temperature gradient of 1° per unit distance.
4 0
2 years ago
Give the number of protons and neutrons in the nucleus of the following atoms
damaskus [11]

The number of protons and neutrons in the nucleus​ : 92 and 146

<h3>Further explanation</h3>

Given

Mass number = 238

Atomic number = 92

Required

Protons and neutrons

Solution

Mass number=number of protons + neutrons

Atomic number=number of protons=number of electrons

Atomic number = 92⇒number of protons=92

Number of neutrons = mass number - atomic number

Number of neutrons = 238 - 92 = 146

3 0
2 years ago
According to the law of multiple proportions, when water forms, the mass ratio of hydrogen to oxygen is variable.
Eddi Din [679]

Answer & Explanation:

The law of multiple proportion states that two elements A and B can react with each other to form multiple compounds while one of the two elements remain fixed.

For Example

Hydrogen reacts with oxygen to form:

Water (H2O)

Hydrogen peroxide (H2O2)

4 0
3 years ago
Visible light has an average wavelength of 550 nm. How much energy would be in this wavelength of light? 5 x 10-19​
beks73 [17]

Answer:

E = 3.6×10⁻¹⁹ J

Explanation:

Given data:

Wavelength = 550 nm  (550 ×10⁻⁹ nm)

Energy of wave = ?

Solution:

Formula:

E = h c/λ

c = 3×10⁸ m/s

h = 6.63×10⁻³⁴ Js

Now we will put the values in formula.

E = 6.63×10⁻³⁴ Js × 3×10⁸ m/s /550 ×10⁻⁹ nm

E = 19.89×10⁻²⁶ J.m /550 ×10⁻⁹ nm

E = 0.036×10⁻¹⁷ J

E = 3.6×10⁻¹⁹ J

3 0
2 years ago
Under certain conditions, neon (Ne) gas diffuses at a rate of 4.5 centimeters per second. Under the same conditions, an unknown
Eva8 [605]
Mv^2 = const 
<span>m ~ 1/v^2 </span>

<span>(4.5/10.1)^2 = 0.198 </span>

<span>20.2 * 0.198 = 4.0 g/mol (Helium)</span>
6 0
3 years ago
Read 2 more answers
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