What does it mean in terms of strength when the ph of an acid changes from 5 to 4?
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Related Questions
A gas is heated from 298 K to 367 K while its volume changes from 2.5 L to 3.9 L. If the initial pressure of the gas is 1.1 atm, what is the final pressure of the gas?
Which subatomic particle is not found in the nucleus of an atom
Is the answer 1 or 2? And why.
What is electropositivity and electronegativity? Between group 1 and group 17, which is electropositive and electronegative?
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Explanation:
Number of moles is defined as mass divided by molar mass of the substance or atom.
Mathematically, No. of moles =
It is known that molar mass of is 119.058 g/mol and number of moles is given as 2.25 mol.
Therefore, calculate mass of as follows.
No. of moles =
2.25 mol =
mass = 267.88 g
Thus, we can conclude that mass of 2.25 moles of manganese(lv) sulfide(MnS2) is 267.88 g.
Final answer:
The mass of 2.25 moles of Manganese (V) Sulfide (MnS2) can be calculated by multiplying the molar mass of MnS2 (119.08 g/mol) by the number of moles (2.25). The result is approximately 267.93 grams.
Explanation:
The question asks about the mass of 2.25 moles of manganese (V) Sulfide (MnS2). We can calculate this using the molar mass of MnS2. The molar mass of manganese (Mn) is approximately 54.94 g/mol, and the molar mass of Sulfur (S) is approximately 32.07 g/mol. To find the molar mass of MnS2 we add up the molar mass of Mn and twice the molar mass of S (because we have 2 S atoms). Therefore the molar mass of MnS2 = 54.94 + 2*(32.07) = 119.08 g/mol. To find the mass in grams, we multiply this molar mass by the number of moles. Hence, the mass of 2.25 moles of MnS2 = 2.25 * 119.08 = 267.93 grams.
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This is true because it reacts with oxygen
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Answer:
Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them. Heavier objects also have more friction because they press together with greater force. Friction produces heat because it causes the molecules on rubbing surfaces to move faster and have more energy.
Explanation:
Answer:
Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them.
Explanation:
, C3H5
(OH)3
B. C2H2
, CH4
, CaCl2
, CaCN2
C. Ch3OCH3
, Ca3
(PO4
)2
, CO2
, H2CO3
D. C6H6
, C2H5OH, C6H5CH3
, C3H5
(NO3
)3
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Answer;
D. C6H6, C2H5OH, C6H5CH3, and C3H5(NO3)3.
Explanation;
-Organic compound are chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen, like the examples above in choice D. . Inorganic Compoundson the other hand, are compounds made from any elements except those compounds of carbon, such as CaSO4, CaCl2 and Ca3(PO4)2 in A, B and C respectively.
In group A, CaSO4 is not organic; in group B, CaCl2 is not organic; in group C, Ca3(PO4)2 is not organic.
Hope this helps~
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N=nitrogen
P3N2 is triphosphorus dinitrogen (a covalent compound)
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Hydrocarbons are organic compounds which contain hydrogen, H and carbon, Conly (option B)
What is hydrocarbon?
Hydrocarbons special class of organic compounds that contains only carbon (C) and hydrogen (H).
Hydrocarbons are classified into:
- Saturated hydrocarbons i.e having only single bonds in its chain
- Unsaturated hydrocarbons i.e having double or triple bond
Generally, hydrocarbons are group into different homologous series. Some of which includes:
- Alkanes i.e single bond
- Alkenes i.e double bond
- Alkynes i.e tripple bond
All of the above have only carbon and hydrogen in their structural formula.
Thus, with the above information, we can conclude that hydrocarbons contains H and C only (option B)
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Complete question:
Hydrocarbons are organic compounds which contain
a. H-H
b. H and C only
c. H, C and H₂O