Answer:
7.5 × 10¹⁵ Hz
Explanation:
Given data
- Wavelength of the radio waves (λ): 40 nm = 40 × 10⁻⁹ m = 4.0 × 10⁻⁸ m
- Frequency of the radio waves (ν): ?
- Speed of light (c): 3.00 × 10⁸ m/s
We can determine the frequency of the radio waves using the following expression.
c = λ × ν
ν = c/λ
ν = (3.00 × 10⁸ m/s)/4.0 × 10⁻⁸ m
ν = 7.5 × 10¹⁵ s⁻¹ = 7.5 × 10¹⁵ Hz
Answer:
0.113 M
Explanation:
Since B and D are on opposite sides of the reaction, the concentration of D increases when the concentration of B decreases. The amount by which D increases is determined by the coefficients of B and D in the balanced chemical equation:
[D]=
(0.045 M)=0.113 M.
Answer:
Molarity of the sodium hydroxide solution is 0.04687 M.
Explanation:
Amount of potassium hydrogen phthalate = 0.3420 g
Moles of potassium hydrogen phthalate =

According to reaction, 1 mole of potassium hydrogen phthalate reacts with 1 mole of sodium hydroxide, then 0.001675 moles pf potassium hydrogen phthalate will :
of NaOH
Moles of sodium hydroxide = 0.001675 mol
Volume of sodium hydroxide solution = 35.73 mL = 0.03573 L (1 mL = 0.001 L)
Molarity of the sodium hydroxide solution :

<span>ionic compounds usually involve a metal and a non metal, and non ionic (or covalent) bonds are usually between 2 non metals
a) Fe3P2 Iron is a metal, Phosphorus is a non metal so it is likely to be non ionic
p.s metals are on the left of the periodic table and non metals on the right</span>
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