I believe the number of electrons change because they are incresimg in the atomic number ares
Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms. There are two main types of chemical bonds that hold atoms together: covalent and ionic/electrovalent bonds.
The glass composition from one manufacturer to another varies widely since glass is composed of many consitutents like sand, clay, water, a number of refractories, feldspar and many more. Hence, with the desired application, the composition must also follow. The answer in 1 is a. true. Forensic soil analysis meanwhile does require must extra experience training since it is a rigorous process. The answer 2 is b.false.
Answer:
Benzoic acid
Explanation:
In this case we have a Grignard reaction in which we go from a formula of C6H5Br to C7H6O2. In other words, we add 1 carbon to the molecule. The only way to add one carbon to this molecule is using as a reagent. When this compound is used as electrophile a carboxylic acid is produced.
Respect to the NMR info, we have a <u>downfield singlet signal</u> at 12.1 ppm which is characteristic of the <u>acid hydrogens</u> in the carboxylic acids (see figure 1). When a carboxylic group is added to the benzene we will obtain the <u>benzoic acid</u> which fits with the formula and the NMR info given.