Salt is a mixture,salt is composed of sodium and chlorine,NaCI.Its a compound of two distinct elements that can not be broken down further without changing the properties of the substance.(I hoped that helped)
Answer:
1. 0.207 moles
2. 6.99 moles
3. 4.20 moles
4. 4.65 moles
5. 2.221 × 10²⁴ atoms
6. 2.221 × 10²⁴ atoms
7. 4.979 × 10^18 atoms
Explanation:
The number of moles and atoms can be calculated using the Avagadro's number, which is 6.02 × 10^23 atoms.
mole = number of atoms ÷ Avagadro's number.
1. Mole = 1.25 x 10²³ ÷ 6.02 × 10^23
mole of Boron = 0.207 × 10(23-23)
= 0.207 × 10^0
= 0.207 moles
2. Mole = 4.21 x 10²⁴ ÷ 6.02 × 10^23
mole of Aluminum = 0.699 × 10(24-23)
= 0.699 × 10^1
= 6.99 moles
3. Mole = 2.53 x 10²⁴ ÷ 6.02 × 10^23
mole of Argon = 0.420 × 10(24-23)
= 0.420 × 10^1
= 4.20moles
4. Mole = 2.80 x 10²⁴ ÷ 6.02 × 10^23
mole of Hydrogen = 0.465 × 10(24-23)
= 0.465 × 10^1
= 4.65 moles
5. Number of atoms of Na = 3.69 × 6.02 × 10²³
= 22.21 × 10²³
= 2.221 × 10²⁴ atoms
6. Number of atoms of Na = 3.69 × 6.02 × 10²³
= 22.21 × 10²³
= 2.221 × 10²⁴ atoms
7. Number of atoms of Co = 8.27 x 10⁻⁶ moles × 6.02 × 10²³ atoms
= 49.79 × 10^17
= 4.979 × 10^18 atoms
Answer:
4.55 m
Explanation:
Given data
- Frequency (ν): 66.0 MHz = 66.0 × 10⁶ Hz = 66.0 × 10⁶ s⁻¹
- Speed of light (c): 3.00 × 10⁸ m/s
We can determine the wavelength of the radio waves using the following expression.
c = λ × ν
λ = c/ν
λ = (3.00 × 10⁸ m/s)/66.0 × 10⁶ s⁻¹
λ = 4.55 m
The wavelength of the radio waves is 4.55 m.
Answer:
imbibición
Explanation:
La propiedad responsable del fenómeno observado es la imbibición de la puerta de madera maciza.
La imbibición se refiere a una situación en la que las partículas sólidas de una sustancia absorben agua sin formar una solución.
A medida que la puerta de madera absorbe agua, se hincha. Esto es responsable del levantamiento de la puerta. Esta absorción de agua ocurre cuando la temperatura y la humedad relativa son altas. Esto es así porque el aire más cálido retiene más humedad.