It would be d bc when it’s at its lowest point it means not that much energy and that would be its lowest point which is D
Answer:
Co²⁺ ions
Explanation:
The ion responsible for the color change in the cobalt solution is Co²⁺ ions. This is because the chemical formula of the given compound is:
CoCl₂;
of the two elements that combined to form this specie, Co is a transition element.
- Transition elements are known to occupy the d-block on the periodic table.
- Most elements here are usually characterized by their variable oxidation states.
- They also produce a wide range of colors.
This question is incomplete, the complete question;
A reaction between liquid reactants takes place at 16°C in a sealed, evacuated vessel with a measured volume of 10.0 L . Measurements show that the reaction produced 37.g of dinitrogen monoxide gas.
Calculate the pressure of dinitrogen monoxide gas in the reaction vessel after the reaction. You may ignore the volume of the liquid reactants. Round your answer to 2 significant digits.
Answer:
Explanation:
Given that;
Volume = 10.0 L
Temperature T = 16°C = ( 16 + 273) = 289 K
we know that molar mass of N₂O = 44 g/mol
number number of moles n will be: weight/molar mass = 37/44 = 0.8409 moles
Universal Gas constant R = 0.0821 atm.mol⁻¹.k⁻¹
pressure p = ?
from the ideal gas law
PV = nRT
P = nRT / n
so we substitute
P = (0.8409 mole × 0.0821 atm.mol⁻¹.k⁻¹ × 289 K) / 10.0 l
P = 19.95195 / 10.0
P = 1.9952 atm
Answer:
9.63 Km is the equivalent to 9,630 m.
9.63 Km is the equivalent to 9,630 m. TRUE
Answer:
E = 8.84×10⁻¹⁷ J
Explanation:
Given data:
Wavelength of wave = 2.25 nm (2.25×10⁻⁹ m)
Energy of wave = ?
Solution:
Formula:
E = hc/λ
c = 3×10⁸m/s
h =6.63 ×10⁻³⁴ Js
now we will put the values,
E = 6.63 ×10⁻³⁴ Js × 3×10⁸m/s / 2.25×10⁻⁹ m
E = 19.89×10⁻²⁶ Jm / 2.25×10⁻⁹ m
E = 8.84×10⁻¹⁷ J
