Many common household substances may be classified as acids or bases. According to the pH scale,A) baking soda is a weak base while bleach is a strong base
B) coffee is a weak acid while drain cleaner is a strong acid
C) oven cleaner is a weak acid while battery acid is a strong acid
D) soft drinking water is a weak base while soapy water is a strong base
Answers
According to the pH scale, baking soda is a weak base while bleach is a strong base. Therefore, option (A) is correct.
What are acids and bases?
An acid is any substance that is capable of donating a proton to another substance. A base is a molecule or ion that is capable to accept a hydrogen ion from an acid.
Acidic substances are generally identified by their sour taste. An acid is commonly a molecule that can donate an H⁺ ion and can be energetically favorable after a loss of H⁺ ion. Acids are also known to turn blue litmus paper into the red.
Bases are characterized by a bitter taste and a slippery texture. A base t can dissolve in water is also referred as an alkali. When bases chemically react with acids, they yield salts and water as products. Bases are also known to turn red litmus paper into the blue.
The pH value of the acids lies between 0 to 7 and the pH value of the acids lies between 7 to 14. Baking soda is a weak base that has a pH value of around 8 to 9 and bleach is a strong base that has a pH value of around 13.
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Answer:
the answer is a
Explanation:
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Fill in the blanks rigids have ..... volume and.....
Sr(OH)2 (aq)
HBr (aq)
HCN (aq)
KOH (aq)
Answers
The pH of solution often differs. Assuming equal concentrations, The rank these solutions by pH are in the order of Highest pH to Lowest pH are Sr(OH)2(aq), KOH (aq), NH3(aq), HCN (aq) and HBr (aq).
- Electrolytes when ranked on the basis of their strength are known to be weak and strong electrolytes.
The Strong electrolytes often dissociate fast in water when compared to the weak electrolytes that often dissociate partially.
- To determine pH from acids or base, you need to note which is the stronger acid/base. The pH scale ranges often from 0 to 14.
Acids are known to have pH value smaller than 7, bases are known to have pH value greater than 7, and neutral salts have a pH value of 7.
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Answer:
Highest pH(most basic)
Sr(OH)2(aq)
KOH (aq)
NH3(aq)
HF (aq)
HClO4(aq)
Lowest pH(most acidic)
Explanation:
The concentration of H+ ion will determine the pH of a solution. The pH actually reflects the ratio of H+ ion and OH- since both of them can combine into water. Solution with more H+ ion will have a lower pH and called acidic, while more OH- will have high pH and be called basic. Strong acid/base will be ionized more than weak acid/base.
Sr(OH)2(aq) = strong base, release 2 OH- ion per mole
KOH (aq) = Strong base, release 1 OH- per mole
NH3(aq) = weak base, release less than 1 OH- per mole
HF (aq) =strong acid, release 1 H+ per mole
HClO4(aq) = stronger acid, release 1 H+ per mole
B. A globe
C . A planet
D. A padlock
Answers
Hope this helped
You can see the fratures of the planet & the names as well all depending WHICH globe you get
Answers
Answer:
37.18°C.
Explanation:
- The amount of heat absorbed by water = Q = m.c.ΔT.
where, Q is amount of heat absorbed by water (Q = 5.75 x 10⁵ J).
m is the mass of water (m = 2190 g).
c is the specific heat capacity of liquid water = 4.18 J/g°C.
ΔT is the temperature difference = (final T - initial T = 100.0°C - initial T).
∴ Q = m.c.ΔT = 5.75 x 10⁵ J.
5.75 x 10⁵ J = (2190 g)(4.18 J/g°C)(100.0°C - initial T)
∴ (100.0°C - initial T) = (5.75 x 10⁵ J)/(2190 g)(4.18 J/g°C) = 62.81°C.
∴ initial T = (100.0°C - 62.81°C) = 37.18°C.
Answers
Answer:
The molar mass is determined by applying the Ideal Gas Law, PV = nRT, where P is the pressure (in atm), V is the volume (in L), n is the number of moles of gas, R is the universal gas constant (0.08206 L∙atm/mol∙K), and T is the temperature (in K).
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(2) C4H8 (4) P2O5
Answers
Answer: The correct answer is Option 2.
Explanation:
Organic compounds are defined as those compounds in which a covalent bond is present between hydrogen and carbon atom. They are basically known as hydrocarbons. If any atom other than hydrogen and carbon is present, it is not considered as an organic compound.
From the given options:
Option 1:
A, calcium atom is present, so it is not considered as an organic compound.
Option 2:
As., only carbon and hydrogen atom is only present, so it is considered as an organic compound.
Option 3:
As, oxygen atom is present, so it is not considered as an organic compound.
Option 4:
As, phosphorous and oxygen atoms are present, so it is not considered as an organic compound.
From the above information, the correct answer is Option 2.
The formula (2) represents an organic compound.
What is an Organic compound
Organic compounds are compounds that primarily consist of carbon (C) and hydrogen (H), along with other elements such as oxygen, nitrogen, sulfur, and others. The formula represents an organic compound that contains four carbon atoms (C₄) and eight hydrogen atoms (H₈).
These examples represent a small fraction of the vast array of organic compounds found in nature and synthesized in laboratories.
Hence we can say that option 2 is right. represents an organic compound.
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Answers
Answer:
Explanation:
It is unchanged.
Explanation:
This is an excerpt from my lesson in science:
In an ionic compound, every ion is attracted to ions of opposite charge that surround it. It is attracted to ions above, below, and to all sides. The pattern formed by the ions remains the same no matter what the size of the crystal.
In a single grain of salt, the crystal pattern extends for millions of ions in every direction. Many crystals of ionic compounds are hard and brittle due to the strength of their ionic bonds and the attractions among all the ions.
Hence, it is unchanged. (Brainliest Please and 5 stars)
Answer:
It is unchanged
Explanation: gradpoint
The pattern formed by the ions remains the same no matter what the size of the crystal.