When a substance goes from being a liquid to a gas it evaporates, or boils away. Think of boiled eggs.
Answer:
Formic acid, citric acid, Oxalic acid, washing soda, baking soda, etc. can be some examples of natural acids and natural bases. They both have domestic, industrial, and various other purposes.
Explanation:
<h3><u>
NATURAL ACIDS</u>
:</h3>
There are lots of natural acids present in our nature. Some of them are the following:
> <u>Formic acid</u>
USE: It is used in the stimulation of oil and gas wells as it is less reactive towards the metal.
> <u>Citric acid</u>
USE: It is considered as the best rust remover as it doesn't harm the metal just remove the rust.
> <u>Oxalic acid</u>
USE: It easily remove iron and ink stains and that's why it is used as an acid rinsing material in Laundries.
<h3><u>
NATURAL BASES</u>
:</h3>
There is a variety of natural base found in our nature which founds a lot of uses in day to day life. some of them are the following:
> <u>Washing soda</u>
USE: It is used in commercial detergent mixture to treat hard water.
> <u>Baking soda</u>
USE: It is the best rising agent used mostly in cooking and for domestic purposes like removing stains, etc..
Answer : Cadmium sulfide (CdS) precipitate is formed.
Explanation :
When the sodium sulfide, 
is mixed with cadmium sulfate, 
then cadmium sulfide precipitate and sodium sulfate, 
is formed. The cadmium sulfide is insoluble in hot and cold water but sodium sulfate is soluble in water.
The balanced chemical reaction will be,
This reaction is an example of double displacement reaction in which the cation and anion of the two reactants exchange their places to give two new products.
This is a chemical reaction where the two clear solutions mixed to produce a bright yellow colored precipitate of cadmium sulfide.
Answer:
6.33 years
Explanation:
In this question, we determine the NPER or the time period that is shown in the attached spreadsheet
Given that,
Present value = (9% × $1,000) ÷ (8.75%) = $1,028.57
Assuming figure Future value = $1,000
Rate of interest = 8.4%
PMT = $1,000 × 9% = $90
The formula is shown below:
= NPER(Rate;PMT;-PV;FV;type)
The present value come in negative
So, after solving this, the answer would be 6.33 years
As sulfur-31 has 16 protons (equivalent to the atomic number) in total. The quantity of protons and electrons in an atom is equal. Consequently, sulfur-31 has 16 electrons in total.
As a result, sulfur-31 has (31-16) or 15 neutrons (the difference between the mass number and atomic number).
What is the atomic number?
The average mass of an element's atoms expressed in atomic mass units is known as its atomic mass (amu, also known as daltons, D).
- The mass of each isotope is multiplied by its abundance to produce the atomic mass, which is a weighted average of all the isotopes of that element.
- (Atomic mass is also known as atomic weight however, "mass" is a more precise phrase.)
The atomic mass of an element, measured in AMU, is equal to the mass in grams of one mole of an element.
- This relationship between the atomic mass and the mole concept is important in chemistry.
Hence, the answer is 15neutrons.
Learn more about the atomic numbers,
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