Q3. Write the names of element present in:
a) Hydrogen chloride
b) Calcium oxide
c) Carbon dioxide
d) Methane
e) Sodium chloride
Answers
Answer:
Hydrogen chloride (HCl), a compound of the elements hydrogen and chlorine, a gas at room temperature and pressure. A solution of the gas in water is called hydrochloric acid.
Calcium chloride
Names
IUPAC name Calcium chloride
Other names Neutral calcium chloride; calcium(II) chloride, calcium dichloride, E509
Identifiers
CAS Number 10043-52-4 22691-02-7 (monohydrate) 10035-04-8 (dihydrate) 25094-02-4 (tetrahydrate) 7774-34-7 (hexahydrate)
Carbon dioxide, CO2, is a chemical compound composed of two oxygen atoms and one carbon atom. Carbon dioxide present in our atmosphere as a gas absorbs many infrared wavelengths from the sun.
Methane (US: or UK: ) is a chemical compound with the chemical formula CH4 (one atom of carbon and four atoms of hydrogen). It is a group-14 hydride and the simplest alkane, and is the main constituent of natural gas.
Sodium's big claim to fame is that it's one of two elements in your table salt. When bonded to chlorine (Cl), the two elements make sodium chloride (NaCl). Sodium is also used as a salt in many fertilizers.