Which statement describes a chemical property of aluminum?(1) Aluminum is malleable.
(2) Aluminum reacts with sulfuric acid.
(3) Aluminum conducts an electric current.
(4) Aluminum has a density of 2.698 g/cm3 at STP.
Answers
The correct answer as to which statement describes a chemical property of aluminum would be that it reacts with sulfuric acid.
There are two properties of every substance - physical and chemical properties.
Physical properties refer to the characteristics that can be observed without altering the substance while chemical properties refer to the characteristics of undergoing chemical changes in reactions.
Physical properties include color, boiling and melting point, hardness etc., while chemical properties include reactivity, toxicity, flammability, etc.
All the options have to do with physical properties of aluminum except its reactivity with sulfuric acid. The equation of reaction is as follows:
Al + H2SO4 ---> Al2(SO4)3 + H2
More on the chemical properties of aluminum can be found here: brainly.com/question/536562
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A type of cake based on egg-white foam and containing no fat: a) Angel food cake b) Sponge cake c) Pound cake d) Butter cake
What element forms a compound with chlorine with the general formula MCl?
Which property is true for metals
The process J is called deposition. Using water is an example; write an equation that represents the process of deposition.
(2) neutron (4) positron
Answers
The subatomic particle which will be attracted by a positively charged object is: Choice 3: Electrons.
By law of electricity; like charges repel while unlike charges attract.
In essence, the subatomic particle which will be attracted to a positively charged object is a negatively charged particle.
Since, protons are positively charged, neutrons have no charge, positrons are positively charged but electrons are negatively charged,
The subatomic particle which will be attracted by a positively charged object is; Electron.
Read. more:
(2) Neutrons have no charge, so won't be affected by positive charges
(3) Electrons have a negative charge, so will be attracted by a positive charge
(4) Positrons have a positive charge, so will be repelled by other positive charges
The answer is (3)
(B) Climate zones at high latitudes are cooler because they are closer to the equator.
(C) Climate zones at high latitudes receive a lot of precipitation because they are farther from the equator.
(D) Climate zones at low latitudes receive little precipitation because they are closer to the ocean.
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(A) Climate zones at low latitudes are hotterbecause they receive more direct sunlight. This is because the Earth's surface at the equator is closer to the sun and therefore receives more direct sunlight
Additionally, the distance of a region from the equator affects its precipitation pattern, with regions closer to the equator generally receiving more precipitation than regions at higher latitudes.
As a result, the tropics, which lie near the equator, tend to be warmer than other regions. In contrast, regions at high latitudes receive less direct sunlight due to the curvature of the Earth's surface, resulting in colder temperatures.
To know more about climate zone, click here:-
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B. CO2
C. H2O
D. CH4
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Answer : The correct option is, (C)
Explanation :
Formula used:
where,
V = number of valence electrons present in central atom
N = number of monovalent atoms bonded to central atom
C = charge of cation
A = charge of anion
First we have to determine the hybridization of the following molecules.
(a)
This is diatomic molecule and diatomic molecules always form linear shape.
(b)
The number of electrons is 2 that means the hybridization will be and the electronic geometry of the molecule will be linear.
(c)
The number of electrons is 4 that means the hybridization will be and the electronic geometry of the molecule will be tetrahedral.
But as there are two atoms around the central oxygen atom, the third and fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be bent.
(d)
The number of electrons is 4 that means the hybridization will be and the electronic geometry of the molecule will be tetrahedral.
Hence, the molecule has bent structure will be,
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AgNO3 + NaCl = AgCl + NaNO3
We are given the amount of silver nitrate to be used for the reaction. This will be the starting point of our calculations.
15.0 mol AgNO3 ( 1 mol AgCl / 1 mol AgNO3 ) = 15.0 mol AgCl