As the radius of a star increases, how do you think its mass might change?
Answers
Answer:
by wind
Explanation:
As the radius of the star increases, the mass will also increase.
This is all about the relationship between the radius and mass of stellar main sequence stars.
Now, usually they are expressed in solar units and as such as seen in the graph image attached, the relationship between the radius(R) and mass(M) of a main-sequence star is seen by the curve attached. It is clear that the higher the radius becomes, the larger the mass of the star also becomes.
To clarify this also, we have a mass - lumosity relationship formula where given as;
L = [tex]M^{3.5}[/tex]
Where;
M is mass
L is lumosity
We know from basics of stellar main sequence stars, that a larger radius gives a much brighter lumosity.
From the mass-lumosity formula, we see that Increase in lumosity is directly proportional to an increase in mass. Therefore in the same vein, we can say that increase in radius is directly proportional to an increase in mass.
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Related Questions
Help me with this pls
Answers
2. eye color
3.hight
4. the weather
5. the day of the week
That’s all I could really think of. Hope it helps!
Seawater is an example of a _______ solution
a Liquid in gas
b Gas in liquid
C Solid in liquid
d Liquid in liquid
Answers
Answer:
C. Solid in liquid
Explanation:
Seawater is an example of a solid in liquid solution.
Sea water is made up of:
water mineral salts dissolved gasesA liquid solution is always made up of a solute being dispersed within the solvent medium.
The solvent is the liquid or fluid medium.
Such solutions are homogeneous because the solute particles are distributed evenly or uniformly in the solvent.
The solute is usually present in smaller amount compared to the solvent.
Why do we sometimes use roman numerals in naming ionic compounds?
Answers
We use roman numerals to indicate the oxidation state of metal atoms when naming compounds especially in the case of coordination compounds. It is a standard system of nomenclature.
What is oxidation state?Oxidation state of a species is the number electrons gained or lost. Oxidation state increases if electrons are lost from the atom and it will be decreased if electrons are gained.
For example, copper is in + 2 oxidation state in CuSO₄, thus it can be indicated as Cu(II). Copper can exists is +3 oxidation too. Thus the representation will be Cu (III).
All the transition metals like copper exhibit various oxidation state. So it is important to indicate in which oxidation state they are in a particular compound. In the compound Fe₂O₃, iron is in + oxidation state whereas in FeSO₄, it can be +2 . Thus it is important to note whether it is Fe (II) or Fe (III).
To find more about oxidation states, refer the link below:
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why is it important that the level of the sea water does not go above the level of the filter paper
Answers
Answer:
The water (the substance) that passes through the filter paper is called the filtrate. If your mixture is a solution, such as salty water, then filtering will not separate the salt from the water. Instead, by heating the soluton the solvent (water) evaporates leaving the solid (salt) behind.
Explanation:
which of the following is true of climate but not of weather
A. Independent of regional temperatures.
B. Not useful for making future predictions
C. Determined by precipitation patterns collected over many years
D. Calculated from a variety of data, including wind speed and direction and cloud cover
Answers
Answer:
C. Determined by precipitation patterns collected over many yearsWhich of the following empirical formulas is written correctly? *
Answers
What are the three eras in the geologic time scale? *
Answers
the Mesozoic
the Cenozoic
Energy stored in an object because of position or condition is called ___________ energy.
Answers
Answer:
Potential energy
*
How do you identify forces in a diagram
sun
arrow
moon
O
Mars
Answers
Please help, How would you define what a chemical reaction and an equation is? Give an example.How would you know if a chemical reaction is balanced? Give an example.
Answers
Answer:
A balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side.
Explanation:
In this chemical reaction, nitrogen (N2) reacts with hydrogen (H) to produce ammonia (NH3). The reactants are nitrogen and hydrogen, and the product is ammonia.
Osmium metal, the densest element, has a density of 22.6 g/mL, while hydrogen, the least dense element, has a density of 8.99 e-5 g/mL. Calculate the volume occupied by 1.00 g of each element. How many times more dense is osmium than hydrogen?
Answers
Answer:
1. Volume of osmium = 0.044 mL
2. Volume of Hydrogen = 11123.47 mL
3. Osmium is 251390 times denser than hydrogen
Explanation:
From the question given above, the following data were obtained:
Density of osmium = 22.6 g/mL
Density of Hydrogen = 8.99×10¯⁵ g/mL
Mass of osmium = 1 g
Mass of Hydrogen = 1 g
1. Determination of the Volume of osmium.
Density of osmium = 22.6 g/mL
Mass of osmium = 1 g
Volume of osmium =?
Density = mass /volume
22.6 = 1 / volume
Cross multiply
22.6 × volume = 1
Divide both side by 22.6
Volume = 1 / 22.6
Volume of osmium = 0.044 mL
2. Determination of the Volume of Hydrogen.
Density of osmium = 8.99×10¯⁵ g/mL
Mass of osmium = 1 g
Volume of osmium =?
Density = mass /volume
8.99×10¯⁵ = 1 / volume
Cross multiply
8.99×10¯⁵ × volume = 1
Divide both side by 8.99×10¯⁵
Volume = 1 / 8.99×10¯⁵
Volume of Hydrogen = 11123.47 mL
3. Determination of the number of times osmium is denser than hydrogen.
Density of osmium (Dₒ) = 22.6 g/mL
Density of Hydrogen (Dₕ) = 8.99×10¯⁵ g/mL
Dₒ / Dₕ = 22.6 / 8.99×10¯⁵
Dₒ / Dₕ = 251390
Cross multiply
Dₒ = 251390 × Dₕ
Thus, osmium is 251390 times denser than hydrogen.
HELP PLEASE!!!!!!
“Andy was drawing
of his circuit. When
asked to explain it,
he said, “This is an
example of a
perpendicular
circuit. The light on
the left will be
brighter because
there is less wire."
Is he correct?”
Answers
What does the speed of a sound depend on?
A.
the medium through which it travels
B.
the source from which it is emit
C.
the volume of the sound
D.
the pitch of the sound
Answers
Please ASAP:
According to their energies, atomic orbitals are filled as:
Answers
Answer:
C
Explanation:S has less energy than P, and P has less energy than D and so on.
During the naval battles of the South Pacific in World War II, the U.S. Navy produced smoke screens by spraying titanium tetrachloride into the moist air where it reacted according to the equation:
TiCl4 + H2O TiO2 + HCl
a. How many moles of H2O are needed to react with 6.50 moles of TiCl4? (13.0)
b. How many moles of HCl are formed when 8.44 moles of TiCl4 react? (33.8)
Answers
Explanation:
The reaction given is;
TiCl4 + H2O --> TiO2 + HCl
The reaction is not balanced, upon balancing it is given as;
TiCl4 + 2H2O → TiO2 + 4HCl
a. How many moles of H2O are needed to react with 6.50 moles of TiCl4?
From the reaction;
1 mol of TiCl4 requires 2 mol of H2O
6.50 mol of TiCl4 would require x mol of H2O
1 = 2
6.5 = x
x = 6.5 * 2 / 1 = 13.0 mol
b. How many moles of HCl are formed when 8.44 moles of TiCl4 react?
From the equation of the reaction;
1 mol of TiCl4 reacts to form 4 mol of HCl
8.44 mol of TiCl4 reacts to form x mol of HCl
1 = 4
8.44 = x
x = 8.44 * 4 / 1 = 33.76 mol
The sucrose molecule is a large and complex molecule built of carbon, hydrogen, and oxygen. How many sucrose
molecules are in 0.5 moles of sucrose?
Answers
Answer:
There are 3.01x10²³ molecules of sucrose
Explanation:
In order to calculate the number of molecules of any atom or compound, we need to use the Avogadro number which is 6.02x10²³. This number could represent atoms or molecules of any mole of compound or atom.
In other words, 1 mole of a certain atom or compound has 6.02x10²³ molecules or atoms.
we have 0.5 moles of sucrose, all we just need to do is a simple rule of 3:
If 1 mole contains 6.02x10²³ molecules
then 0.5 moles will contain:
n° molecules = 0.5 * 6.02x10²³ / 1
n° molecules = 3.01x10²³ molecules of sucroseHope this helps
Which of the following reactions is irreversible?
A. Zinc (Zn) reacting with hydrochloric acid (HCl)
B. Haber Process
C. Dehydrating copper sulfate (CuSO4)
D. Thermal decomposition of NH4Cl
PLEASE HELP
Answers
Answer:
A. Zinc (Zn) reacting with hydrochloric acid (HCl)
Explanation:
The reaction of Zinc with hydrochloric acid is an irreversible chemical process.
What makes a reaction reversible;
it must be involved in reversible chemical processes, no matter how small the extent of the reversibility. the rate of forward reaction must be equal to the backward one.So, hydrochloric acid when reacting with Zinc will give a complete chemical change that will go into completion.
Answer:
(A): Zinc (Zn) reacting with hydrochloric acid (HCI)
Explanation:
I got it right on founders edtell
D. If you were talking to an elderly person who was having trouble hearing you, would it
be better to talk in a deeper voice (low-frequency sound) or a higher voice (high-
frequency sound)?
Answers
Answer:
Deeper Voice (low-frequency sound)
Explanation:
For me, I would talk to an elderly person who has trouble hearing me in a deeper voice because at least it's not too loud. If you talk to a person with a higher voice (high-frequency) it can just affect their hearing more.... when you scream, that a high-frequency and sometimes it bothers your ears, so for me in general I would use a deeper voice.
Hope this helped!
Have a supercalifragilisticexpialidocious day!
A solution of baking soda has a pH of 9. Baking soda
(blank)
Answers
Answer: is a base
Explanation:
What is the percent of N in
Li3N?
(Li = 6.94 amu, N = 14.01 amu)
Answers
Answer:
The percent of n would be 7.10
Explanation:
guys please finnish thiissss
Answers
Answer:
1. H2O
2. Ba(OH)2
3. H2O
4. H2O
5. Ca(OH)2
6. H2O
Explanation:
Answer:
1. H2O
2. Ba(OH)2
3. H2O
4. H2O
5. Ca(OH)2
6. H2O
Explanation:
Hope this helps
The picture below is of oxygens bonded together. This forms a...
a) molecule
b) element
c) molecular compound
d) atom
Answers
Answer:
Explanation:
The picture shows two similar structures bonded together so it can not be an atom or molecular compound .
It is a molecule . Each structure ( lobe ) represents atom of oxygen . Molecule of oxygen contains two atoms bonded together .
Molecule of oxygen = O₂ .
PLEASE HELP 5TH GRADE SCIENCE Select the statement that correctly compares the sun and a comet.
O A. The sun and a comet orbit around the planets in space.
O B. The sun and a comet are bright and made up entirely of gas.
O C. The sun is at the center of the solar system, and the comet orbits around it.
O D. The sun is very small in size compared to a comet.
Answers
Answer:
c
Explanation:
The sun is at the center of the solar system, and the comet orbits around it.
The sun is at the center of the solar system, and the comet orbits around it. Therefore, option C is correct. Comets are orbiting around sun through the elliptical orbit.
What are comets ?Comets are tiny spatial objects that are composed of ice, dust and gases. Comets go around the sun in a highly elliptical orbit. They can spend hundreds and thousands of years out in the depths of the solar system before they return to sun at their perihelion.
Like all orbiting bodies, comets follow Kepler's Laws - the closer they are to the Sun, the faster they move. While a comet is at a great distance from the Sun, its exists as a dirty snowball several kilometers across.
But as it comes closer to the sun, the warming of its surface causes its materials to melt and vaporize producing the comet's characteristic tail. Comet tails can be as long as the distance between the Earth and the Sun. Hence, option C is correct.
Find more on comets:
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what mass of ZnCI2 can be prepared from the reaction of 3.27 grams of zinc with 3.30 grams of HCI?
Zn + 2HCI —-> ZnCI2 + H2
Answers
Answer:
Zn. + 2 HCl ----------> ZnCl2. + H2
Explanation:
Mass of Zn in mole = 3.27/ 65.38= 0.050010.... mol
Mass of HCl in mole = 3.3/ 73= 0.044....mol
Hence, limiting reagent is HCl
Molar mass of ZnCl2= 136.38g
Let mass of ZnCl2 be x
x = 3.3*136.38÷ 73 = 6.165...
So, the mass of ZnCl2 is 6.17 g
How many moles in 13 grams of C 2 H6 ? show work
Answers
Answer:
0.43mole
Explanation:
Given parameters:
Mass of C₂H₆ = 13g
Unknown:
Number of moles = ?
Solution:
To solve this problem we need to first find the molar mass of the given compound.
Molar mass of C₂H₆ = 2(12) + 6(1) = 30g/mol
So;
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Number of moles = [tex]\frac{13}{30}[/tex] = 0.43mole
What are the answers??
Answers
The percent composition :
Al : 15.79%
S : 28.07%
O : 56.14%
Further explanationGiven
Aluminum, Oxygen, and Sulfur in Al₂(SO₄)₃ compound
Required
The percent composition
Solution
Molar mass of Al : 27 g/mol
Molar mass of O : 16 g/mol
Molar mass of S : 32 g/mol
Molar mass of Al₂(SO₄)₃ : 342 g/mol
% Al = 2.MM Al / MM Al₂(SO₄)₃ x 100%=2.27/342 x 100%=15.79%
% S = 3. MM S / MM Al₂(SO₄)₃ x 100%= 3.32/342 x 100%=28.07%
% O = 12.MM O / MM Al₂(SO₄)₃ x 100%= 12.16/342 x 100%=56.14%
GIVING BRAINLIST TO BEST ANSWER! How does Bohr’s model of the atom compare with Thomson’s model?
A) They both describe atoms as small, indivisible spheres.
B) They both describe electrons as moving around the nucleus.
D) They both describe electrons as being surrounded by the positive matter.
C) They both describe atoms as being made up of positive and negative matter.
Answers
Answer:I say C .. u should give the other person Brainliest bc they had a fully answer!
Explanation:
Answer:
d on brainly
Explanation:
i just took the exam
Need help ASAP plzzzzzz
Answers
Answer:
Biodiesel has a higher oxygen content (usually 10 to 12 percent) than petroleum diesel. ... Biodiesel is more chemically active as a solvent than petroleum diesel. As a result, it can be more aggressive to some materials that are normally considered safe for diesel fuel. Biodiesel is much less toxic than petroleum diesel.
What is the empirical formula for C10h22
Answers
The empirical formula is
C5H11
Explanation:
We have decane, the alkane with a chemical formula of
C10H22
.
The empirical formula of a substance has the smallest ratio between the elements its composed of.
Here, we got the carbon to hydrogen ratio as
10:22
. So, we need to find the greatest common factor between the two numbers.
10=2*5
22=2*11
As you can see here, the greatest common factor between the two numbers is
2
, and so we divide both numbers by
2
.
10/2=5
22/2=11
And so, the new formula becomes
C5H11
A. Neutrons and electrons
B. Protons and electrons
C. Electrons in energy levels
D. Protons and neutrons
Answers
Answer:
D.
Explanation:
Because protons and neutrons make up the mass of an atom.