DescriptionIn chemistry an element is a species of atom having the same number of protons in its atomic nuclei. For example, the atomic number of oxygen is 8, so the element oxygen describes all atoms which have 8 protons. In total, 118 elements have been identified.
Answer
B salt this is beacause salt is made of monomers
Answer:
4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (l)
Explanation:
This is an oxidation-reduction (redox) reaction:
4 N-III - 20 e- → 4 NII
(oxidation)
10 O0 + 20 e- → 10 O-II
(reduction)
NH3 is a reducing agent, O2 is an oxidizing agent.
Answer:
-. D
6. A
Explanation:
Chromosomes are presented in a genotype. Chromosomes are structures within a cell that contains a person's gene while genotype is an individual collection of genes. Therefore genotype reflect the chromosomes present in cell
6. Genetic diseases differ from other diseases because recurrence risk is predictable since genes are transferred from parent to offspring and therefore the diseases are transferred from parent to offspring
Al(OH)₃ + 3HCl = AlCl₃ + 3H₂O
C=0.200 mmol/mL
M{Al(OH)₃}=78.0 mg/mmol
m{Al(OH)₃}=55.0 mg
n{Al(OH)₃}=m{Al(OH)₃}/M{Al(OH)₃}
3n{Al(OH)₃}=n(HCl)=CV
3m{Al(OH)₃}/M{Al(OH)₃}=CV
V=3m{Al(OH)₃}/[CM{Al(OH)₃}]
V=3*55.0/[0.200*78.0]=10.6 mL
