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Mice21 [21]
2 years ago
5

С каким из приведенных веществ взаимодействует соляная кислота

Chemistry
1 answer:
Alexus [3.1K]2 years ago
6 0

Answer:

Соляная кислота оказывает разъедающее действие на глаза, кожу и слизистые оболочки. ... Обычными химическими веществами, добавляемыми к этим жидкостям, являются полимеры для повышения вязкости ... Производятся в промышленных масштабах путем взаимодействия хлорида натрия и серной кислоты; ... объем разбавляется 85% водой в исходном растворе перед закачкой в пласт.

Explanation:

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What is the correct value for Avogadro's number?
nydimaria [60]

Answer: Option A. 6.022 x 10^23

Explanation:

8 0
3 years ago
The wavelength of a particular color of violet light is 433 nm. The energy of this wavelength of light is kJ/photon. (109 nm = 1
mash [69]

Answer:

4.59 × 10⁻³⁶ kJ/photon

Explanation:

Step 1: Given and required data

  • Wavelength of the violet light (λ): 433 nm
  • Planck's constant (h): 6.63 × 10⁻³⁴ J.s
  • Speed of light (c): 3.00 × 10⁸ m/s

Step 2: Convert "λ" to meters

We will use the conversion factor 1 m = 10⁹ nm.

433 nm × 1 m/10⁹ nm = 4.33 × 10⁷ m

Step 3: Calculate the energy (E) of the photon

We will use the Planck-Einstein's relation.

E = h × c/λ

E = 6.63 × 10⁻³⁴ J.s × (3.00 × 10⁸ m/s)/4.33 × 10⁷ m

E = 4.59 × 10⁻³³ J = 4.59 × 10⁻³⁶ kJ

5 0
2 years ago
Balance the following equations by inserting the proper coefficients.
Montano1993 [528]
1212. 1212. 1323........

6 0
3 years ago
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A buffer solution is composed of 4.00 4.00 mol of acid and 3.25 3.25 mol of the conjugate base. If the p K a pKa of the acid is
Reika [66]

<u>Answer:</u> The pH of the buffer is 4.61

<u>Explanation:</u>

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

pH=pK_a+\log(\frac{[\text{conjuagate base}]}{[\text{acid}]})

We are given:

pK_a = negative logarithm of acid dissociation constant of weak acid = 4.70

[\text{conjuagate base}]} = moles of conjugate base = 3.25 moles

[\text{acid}]  = Moles of acid = 4.00 moles

pH = ?

Putting values in above equation, we get:

pH=4.70+\log(\frac{3.25}{4.00})\\\\pH=4.61

Hence, the pH of the buffer is 4.61

8 0
3 years ago
The gases that surround Earth or another planet.
yan [13]

Answer:

i think that it is an atmosphere.

Explanation:

3 0
3 years ago
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