Answer & explanation:
For an atom to be electrically neutral, it must have the same amount of protons and electrons, but this does not always happen, so compounds called ions arise.
Ions are formed when an atom of an element has electron gain or loss due to reactions. They can be classified into cations and anions.
Anions are atoms that receive electrons, so they are negatively charged.
Examples: Cl⁻, O⁻², N⁻³
Cations are atoms that lose electrons and thus become positively charged.
Examples: Na⁺, Al⁺³, Pb⁺⁴
In addition, some compounds are formed in bonds between negative and positive ions. These are called ionic bonds.
Example: Formation of sodium chloride (table salt).
Na⁺ + Cl⁻ → NaCl
Answer:
no
Explanation:
it is not endothermic reaction
Answer:
163.940671 grams
Explanation:
You can view more details on each measurement unit: molecular weight of Na3PO4 or grams This compound is also known as Trisodium Phosphate. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Na3PO4, or 163.940671 grams.
Answer:
According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas? The motion of the gas particles is random and in a straight-line.
Explanation:
Answer:
True
Explanation:
Without enough nitrogen there is not enough nutrients for plants to make both aminoacids and many products of secondary metabolism
Answer: Blocks harmful UV rays transports and distributes heat cycles essential elements: C, O, and N
Explanation:
The atmosphere is the integral part of the earth this typically includes gases which are necessary for sustaining lives on earth. The earth atmosphere forms a protective blanket around the inner earth which prevents the entry of majority of UV rays directly coming from the sun, This way atmosphere plays an important role in protecting the living beings from carcinogenic UV rays. It distributes the heat coming from the sunlight also it reflect back the absorb heat energy to the space acquired from the sun so as to maintain the balance of heat on planet earth.
It essentially plays an important role in circulation of essential gaseous elements like carbon, oxygen and nitrogen as these are required by the plants to conduct photosynthesis, respiration and protein synthesis respectively. Majorly all other life forms on earth are dependent on plants for food requirements therefore this cycling is beneficial for sustaining their lives too.
c. cutting
b. milling
d. welding
Answer:
d. welding is the correct answer.
Explanation: