The N2O molecule has a total number of 18 valence electrons - 6 from nitrogen and 6 from each oxygen atom. Since oxygen is more electronegative... View Article
Answer: Sodium has a strong metallic lustre and in colour is very analogous to silver. Sodium is a member of the alkali metal family with... View Article
The human brain is divided into three parts: the brainstem, the cerebellum, and the cerebrum. The hindbrain comprises the brainstem and the... View Article
Pythons and boa constrictors have tiny hind leg bones buried in muscles toward their tail ends. Snakes usually don't have legs. There are no... View Article
The Lewis structure of HNO₃ shows that it is a hybrid of two structures. The N atom has steric number SN = 3. The electron geometry of HNO3 is... View Article
The Earth revolves around the Sun, and it does so at a rate we measure to be 365 days (roughly 24 hour periods), or one year. A Sidereal year is... View Article
The structure of the small intestine is designed for absorption of nutrients. The inside of the small intestine is lined with villi that absorb... View Article
Torque is a type of force that is applied to an object which results in the object rotating around an axis. Force is an action that causes a... View Article
Classical mechanics describes the motion of macroscopic objects such as spacecraft, planets, stars, and galaxies. The classical theories are... View Article
The valence electrons (VE) are the electrons in the outer shell of an atom. These are involved in forming bonds to adjacent atoms. For neutral... View Article
The chemical formula of heavy water is D2O. Heavy water looks like water, but is about 10 percent heavier. In heavy water there is deuterium... View Article
Formal charge on N = 5−4 = +1 The formal charge on O1 = 6−7 = −1 The formal charge on O2 = 6−7= −1 The formal charge on O3 = 6−6 = 0... View Article
Number of moles of solute = massofsolute/molarmass of solute mass is measured in grams and molar mass is measured in gmol−1 Molar mass is... View Article
4NH3+7O2→4NO2+6H2O 4 nitrogen atoms and 12 hydrogen atoms are taking part in this reaction. 6 molecules of H2O. There are 4 molecules of... View Article
VALENCY OF FIRST 20 ELEMENTS WITH THEIR SYMBOL Hydrogen [H] -valency- 1 Helium [He]-valency-0 Lithium [Li]-valency-1 Beryllium [Be]-valency-2... View Article
Metalloids are a group of elements found in the centre section of the periodic table, in between metals and non-metals. Metalloids are located to... View Article