The answer is 3, because 5,8, and 9 are significant because they aren’t zeros.
HCl Acid + Sodium Hydroxide ----> Sodium Chloride + water.
<u>Explanation</u>:
- The reaction between an acid and a base is known as a neutralization reaction. The reaction of an acid with a base to give salt, water and heat is called neutralization.
- When hydrochloric acid reacts with sodium hydroxide, sodium chloride and water are produced.
HCl + NaOH → NaCl + H2O + Heat
- The heat evolved in the neutralization reaction raises the temperature of the reaction mixture.
- An electro-electrodialysis process (EED) is utilized to create HCl and NaOH from exchange NaCl. NaOH and HCl arrangements with purity higher than 99.9% are acquired. The experimental estimations of the transitions for HCl and NaOH are contrasted and values determined from the incorporation of the Nernst–Planck electro dispersion conditions.
Answer:
The repeating nature of physical and chemical properties with atomic number
Explanation:
Periodic table is designed in a way in which elements are divided in groups and periods. Periods are rows and groups are columns. The elements in groups share similar properties due to the same number of valence electrons they have. Going along each period, we'll always get back to the same group at some point. This is why we have periodic trends, the trends repeat gradually when we finally reach the same group we're analyzing.
Physical and chemical properties vary periodically. For example:
- atomic radius decreases from left to right along the period;
- ionization energy increases from left to right along the period;
- electronegativity increases from left to right along the period;
- metallic properties decrease from left to right along the period.
Answer: Option (c) is the correct answer.
Explanation:
Water cycle is a process in which water circulates from point to another into the atmosphere. This means that water in the form of rain falls on the ground and then through the process of evaporation it reaches back to the atmosphere and clouds.
Energy from the Sun is highly responsible for carrying out the process of water cycle. This is because when water falls on from clouds it seeps through rivers, mountains, lakes etc into the oceans and then heat energy from the sun evaporates this water and it rises to make clouds and help in rainfall and snow.
Therefore, we can conclude that energy from the Sun is the most responsible force driving the water cycle.
Q. What is the mass in grams of one mole of any substance know as
A. Molar Mass