Scientific notation refers to a technique of writing number that are too large or too small in a decimal form, that will be convenient for use in calculations. It is the standard way of writing numbers that are either too small or too big, thus, it is also called standard form. When using scientific notation, all numbers are written in the form: Z * 10^a, where the exponent a is an integer and coefficient Z is a real number. For the question given above, the standard form of the number is 5.03 * 10^ -3. The exponent -3 refers to the three zeros that appear at the beginning of the number.
Answer:
TLC is thin-layer chromatography, a chromatography technique which is used for separating the non-volatile mixtures.
Explanation:
To run a thin layer thin layer chromatography experiment with a chemical substance, begin by marking a horizontal line near the bottom of TLC plate with PENCIL. Place a SMALL spot of the substance onto the line. For the mobile phase add a small amount of SOLVENT at the bottom of TLC chamber. Place the plate in, then COVER the chamber. Once the mobile phase approaches the top of the plate, remove the plate and mark the SOLVENT line. Note the positions of the spot and calculate the Rf if needed.
Answer:
cannot be used to produce energy in reactors.
Explanation:
Currently, there is no reactor that can allow the use of nuclear fusion, although nuclear plants use nuclear fission reactors.
Nuclear fusion happens when thousands of atoms collide with each other when they are in the midst of extreme conditions of literature and pressure. This collision causes the atoms to fuse, creating another element. The process releases amounts of light and heat, promoting a high release of energy. This whole process occurs without the release of CO2 into the atmosphere, without the release of toxic waste and without the risk of explosions, which makes nuclear plants have a strong interest in building a reactor to use this type of energy. For this reason, scientists from different countries have collaborated with each other on a project called Iter, which seeks to build a reactor and achieve the first reaction in 2025.
Na2O + HCl→ NaCl +H2O
Does the equation above satisfy the law of mass conservation of matter.
No, since there are two sodium atoms as reactants, but only one sodium atom as a product.
<em><u>Explanation</u></em>
According to the law of mass conservation the number of atoms in the reactant side must be equal to the number of atoms in the product side.
For this reason the equation above does not satisfy the law of mass conservation since the number of sodium atoms are not equal in both side.
