Answer:
152.4 g
Explanation:
Step 1: Given data
Number of H atoms: 8.334 × 10²⁴ atoms
Step 2: Calculate the moles of H corresponding to 8.334 × 10²⁴ atoms of H
We will use Avogadro's number, that is, there are 6.022 × 10²³ atoms of H in 1 mole of H.
8.334 × 10²⁴ atom × (1 mol/6.022 × 10²³ atom) = 13.84 mol
Step 3: Calculate the moles of ammonium acetate (NH₄CH₃CO₂) that contain 13.84 moles of H
The molar ratio of NH₄CH₃CO₂ to H is 1:7. The moles of NH₄CH₃CO₂ that contain 13.84 moles of H are 1/7 × 13.84 mol = 1.977 mol.
Step 4: Calculate the mass corresponding to 1.977 moles of NH₄CH₃CO₂
The molar mass of NH₄CH₃CO₂ is 77.08 g/mol.
1.977 mol × 77.08 g/mol = 152.4 g
N(NaOH)=0.0688 mol
v=0.250 L
c=n(NaOH)/v
c=0.0688/0.250=0.2752≈0.28 mol/L
0.28 M
This would be the downward movement of water. It begins flowing and continues in a downward movement moving throughout,
Answer:
HI(aq) + NaOH(aq)-------------> NaI(aq) + H2O(l)
Explanation:
The molecular reaction between hydroiodic acid and aqueous sodium hydroxide is shown above. It is a reaction of one mole of hydroiodic acid with one mole of sodium hydroxide to yield salt and water only. It is a neutralization reaction. Hydrogen iodide dissolves in water to produce hydronium ions which agrees with Arrhenius description of acids. Hydroiodic acid is a strong acid with PKa of -9.3
Answer
6.9 x 10¹²Hz
Explanation:
Given parameters:
Wavelength of the wave = 4.35 x 10⁻⁵m
Unknown:
Frequency of the wave = ?
Solution:
The speed of a wave is related to the wavelength and frequency using the expression below;
C = Fλ
C is the speed of light = 3 x 10⁸m/s
F is the frequency
λ is the wavelength
Insert the given parameters and solve;
3 x 10⁸ = F x 4.35 x 10⁻⁵
F = = 6.9 x 10¹²Hz