red dwarf
white dwarf
pulsar
black hole
Answer:
The correct answer is pulsar.
Explanation:
Protostar : Its a young star with contracting mass which gains mass from its parent molecular cloud. At this stage fusion process does not start.
Red dwarf: A star having lower surface temperature , luminosity, mass and size than of the sun.
White dwarf : its an ultimate stage for an average mass star like sun . its a small dense star with size relatively equal to planet.
Pulsar : A rotating neutron star that emits beam of radio waves and other electromagnetic radiations.
Black hole: It is region of space time with very strong gravitational pull that even smallest particle or electromagnetic wave is incapable to escape it.
An even distribution of electron density across the molecule, which means that the molecule has no distinct positive or negative ends. This lack of polarity makes the molecule symmetrical, and the forces of attraction between individual molecules are weak. Consequently, nonpolar molecules tend to have low boiling points and are generally insoluble in polar solvents.
When two oxygen atoms come together to form an oxygen molecule (O2), they share electrons to form a covalent bond. In this bond, each oxygen atom shares two electrons with the other oxygen atom, creating a stable molecule.
While it is true that the oxygen atoms in O2 molecule are electronegative and pull on the shared electrons in opposite directions, the two oxygen atoms are identical in terms of their electronegativity. This means that they pull on the electrons with equal strength, resulting in a balanced distribution of charge across the molecule. As a result, the molecule becomes nonpolar.
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Answer:
The area is 2.5 m²
Explanation:
Step 1: Data given
A car has a 25 m² hydraulic lift platform that weighs 15000 N
The smaller piston required a force to lift = 1/100 its weight
Step 2: Calculate the area of the smaller piston
Pressure = Force / Area
F1 / A1 = F2 / A2
⇒ with F1 = weight of the hydraulic lift = 15000 N
⇒ with A1 = area of the hydraulic lift = 25 m²
⇒ with F2 = 1/100 of it's weight = 1500 N
A2 = F2 / (F1/A1)
A2 = 1500 ( 1500/25)
A2 = 2.5
The area is 2.5 m²
(2) iron(III) sulfate (4) iron(III) sulfide
The IUPAC name for the compound FeS is "iron(II) sulfide." Therefore, option 3 is correct.
The IUPAC (International Union of Pure and Applied Chemistry) name is a systematic way of naming chemical compounds.
The compound FeS consists of iron (Fe) and sulfur (S) atoms. In FeS, iron has a +2 oxidation state, and sulfur has a -2 oxidation state.
According to the IUPAC nomenclature rules for naming inorganic compounds, the cation (iron) is named first, followed by the anion (sulfide).
To indicate the oxidation state of iron, the Roman numeral II is used in parentheses after the name "iron." The resulting name is "iron(II) sulfide."
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A
Which model is composed of rapidly moving particles?
B.
Which model is composed of particles vibrating in place?
C
Which model is composed of electrically charged particles?
Which model is composed of particles sliding past each other?
Answer:
C Which model is composed of electrically charged particles?
Explanation:
The best question to resolve and determine the model which is plasma is to find one that is composed of electrically charged particles.
Plasma is one of the states of matter which is characterized by ions and other charged particles.
Matter is anything that has weight and occupies space.
There are four known states of matter which are:
Plasma is the only state of matter made up of charged particles.
Answer:
Chemical change
Explanation:
This type of change is reversible, as the water vapor can condense back into liquid water under the right conditions.