Answer : The correct answer is Option D.
Explanation:
Ores are defined as natural occurring substance from which metals and another mineral are extracted.
Bauxite is primary ore of an aluminium metal. it doesn't have definite or specific chemical composition. This is because it contains mixture of hydrous aluminum oxide, aluminum hydroxides, insoluble materials like hematite, quartz ,geothite ,magnetite etc.
From the given options the most appropriate statement which is correct about the bauxite is 'It does not have a definite chemical composition'.
Hence, the correct option Is (D).
Water is attracted to water, and Adhesion: Water is attracted to other substances.
Mark me as brainlist
Answer: Titration
Explanation:
Titration is a method of quantitative analysis, by which a student, with standard volumetric equipment, burettes, and pipettes, can achieve very precise, and accurate results. It is also known as
volumetric analysis
.
Answer:
Electron = 10
Proton = 10
Neutrons = 11
Explanation:
if you want to calculate the number of neutrons and element simply , just subtract number of The number of electrons in a neutral atom is equal to the number of protons. or the atomic number fom the mass number n atomic number of an element is equal o the number of electrons present
Atomic no = no of proton present or
Mass number = proton + neutrons
21 = protons +11
protons = 10
The number of electrons in a neutral atom is equal to the number of protons.
Initial Conditions:
Volume=v1= 3.5 L
Temperature= T1 =298K
Final Conditions:
Temperature= T2= 285K
Volume= v2= ?
Use the general gas equation;
P1*v1/T1 = P2*v2/T2
Note:
Pressure is constant
so the equation become,
v1/T1 = v2/T2
3.5/298 = v2/285
v2 = 3.347 L