The concentration in mol/L of the chemist's potassium iodide solution : = 4.4 x 10⁻⁴ M
<h3>Further explanation</h3>
Given
88. μmol of Potassium iodide
200. mL volumetric flask
Required
The concentration
Solution
Molarity is a way to express the concentration of the solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
Conversion :
88. μmol = 88 . 10⁺⁶ mol = 8.8 10⁻⁵ mol
200 ml = 0.2 L
The molarity :
= n : V
= 8.8.10⁻⁵ : 0.2
= 4.4 x 10⁻⁴ M
Answer:
Synthesis of a Superconductor. The YBa2Cu3O7-x is prepared by grinding the reactants together, strongly heating "calcinating" at 900–950 °C for 8-12 hours, pelletizing the powder mixture, heating or "sintering" the pellet at 950 °C for 12 or more hours, then maintaining the product at 500°C for 12-16 hours.
A photodecomposition reaction is a kind of decomposition reaction wherein the reactant is broken down by absorbing energy from photons into its constituents. The decomposition into dioxygen and an oxygen radical, as illustrated by the chemical equation given below, is an example of a photo decomposition reaction.
O3+ hν → O2+ O.O3+ hν → O2+ O.
Excitation energy hops from light-capturing pigment molecules to reaction centre molecules step-by-step along the molecular energy ladder, according to the traditional, semi-classical model of photosynthetic energy transfer.
The absorption spectra of the photosynthetic pigments in the organism determine the efficiency of photons of various wavelengths. Chlorophylls absorb light in the violet-blue and red spectrums, whereas accessory pigments absorb light in other wavelengths. Red algae can photosynthesize in deep seas because their phycobilins absorb blue-green light, which penetrates further into water than red light. In the pigment molecule, each absorbed photon triggers the creation of an exciton (an electron stimulated to a higher energy state).
Answer:
- Closed System
- Open System
- Isolated System
Explanation:
In thermodynamics, there are three types of systems and they include:
- The closed
- The open
- And the Isolated system
The closed system is capable of exchanging only energy within its surroundings.
An open system is capable of exchanging both energy and matter within its surroundings.
While an isolated system cannot exchange either matter or energy within its surroundings.
There is nothing like a shared system in thermodynamics.
Answer:
i think
Explanation:
"the reign of scar" will sound better
