Answer:
sruff that has to do wuth vikun=
Explanation:
good job
A rock has been placed in water. The mass of the rock is 20g. What is the rocks density
Answer: 20g/(volume of water displaced)
Explanation: Density = Mass/Volume Once the volume of displaced water is known, divide the 20 grams by the volume.
1. What was the evidence that a salt was produced? Explain how that evidence was achieved.
2. Where do you predict the water (H2O) that was produced has come from?
Will give brainliest :)
1.Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in the form of a natural crystalline mineral is known as rock salt or halite. Salt is present in vast quantities in seawater. The open ocean has about 35 grams (1.2 oz) of solids per liter of sea water, a salinity of 3.5%.
2.Water (chemical formula H2O) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent[1]). It is vital for all known forms of life, even though it provides no calories or organic nutrients. Its chemical formula H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°.[2] "Water" is the name of the liquid state of H2O at standard conditions for temperature and pressure.
Explanation:
hope it is helpful for you have a nice dayA metal has a density of 11.3 g/cm^3. If a sample of this metal has a mass of 25.210 g, then its volume must be ?
Taking into account the definition of density, the volume of an object with a mass of 25.210 mL and a density of 11.3[tex]\frac{g}{cm^{3} }[/tex] is 2.23 cm³.
First of all, density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.
In other words, density is a quantity that relates the mass and volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
[tex]density=\frac{mass}{volume}[/tex]
Density, according to the International System of Units, is usually expressed in kilogram per cubic meter ([tex]\frac{kg}{m^{3} }[/tex])or gram per cubic centimeter ([tex]\frac{g}{cm^{3} }[/tex]).
In this case, you know:
density= 11.3 [tex]\frac{g}{cm^{3} }[/tex]mass= 25.210 gvolume= ?Replacing in the definition of density:
[tex]11.3\frac{g}{cm^{3} }=\frac{25.210g}{volume}[/tex]
Solving:
volume× 11.3 [tex]\frac{g}{cm^{3} }[/tex]=25.210 g
[tex]volume=\frac{25.210g}{11.3\frac{g}{cm^{3} }}[/tex]
volume= 2.23 cm³
In summary, the volume of an object with a mass of 25.210 mL and a density of 11.3[tex]\frac{g}{cm^{3} }[/tex] is 2.23 cm³.
Learn more about density:
brainly.com/question/952755?referrer=searchResults brainly.com/question/1462554?referrer=searchResultsThe purpose of graphs, charts and tables is to?
Classify the following as Physical or Chemical changes. a) Water evaporating _________________ b) Sulfur dioxide reacts with water to make acid rain ___________________ c) Metal rusting ______________________ d) Dissolving sugar in a cup of coffee _____________________ e) Burning of gasoline ________________________
Answer:
A) Physical
B) Chemical
C) Chemical
D) Physical
E) Chemical
Explanation:
Physical changes are reversible while chemical changes are not.
It is hypothesized that the water on Earth came from
Answer:
The new research suggests that Earth's water came from both rocky material, such as asteroids, and from the vast cloud of dust and gas remaining after the sun's formation, called the solar nebula.
Explanation:
3
Using the average experimental value for the density of your unknown metal, calculate the
agine a large sample of the same metal weighed 950 pounds. Calculate as volume in cubic meters using
dimensional analysis fie, use conversion factors and show unit cancellation. Start with 950 lbs...)
Unit conversion using dimensional analysis is performed by multiplying the given unit with the conversion factor
The volume of a 2 ft.³ in cubic meters is approximately 0.056634 m³
The given mass of the sample of metal, m = 950 pounds
The units of density using the imperial units = [tex]lb_m[/tex]/ft.³
The units of the volume of the metal sample based on the above density = Cubic feet
The desired units = Cubic meters
The conversion factor for converting a unit in cubic feet to a unit in cubic meters is presented as follows
1 ft.³ = 0.0283 m³
Therefore, using dimensional analysis, the volume quantity in cubic feet is multiplied by 0.0283 m³/(1 ft.³) to convert the volume to cubic meters
Example;
Given that the volume of the metal sample 2 ft.³, we have that the volume in cubic meters is therefore;
2 ft.³ × (0.0283 m³)/(1 ft.³) ≈ 0.056634 m³
The volume of a sample of metal that is 2 ft.³ in cubic meters is ≈ 0.056634 m³
Learn more about dimensional analysis here:
https://brainly.com/question/22015862
https://brainly.com/question/17224555
How many atoms? H_____, O_____, Fe_____ Total atoms? _____ 3Fe(oh)2
Answer:
H = 6
O = 6
Fe = 3
Total atoms = 15
Explanation:
3Fe (OH)2
Fe = 1×3
O= 2× 3 = 6
H= 2× 3 = 6
Total atoms = 6+6+3=15
I hope I helped you^_^
Please help me please find the answer
Answer:
look at the pic above
Explanation:
i hope u got it......
A 0.450 M solution of HCl is prepared by adding some 1.50 M HCl to a 500 mL volumetric flask and diluting to the mark with deionized water. What volume of 1.50 M HCl must be added
Answer:
150 mL of 1.50 M HCL
Explanation:
So the equation you need to solve this equation is:
M1*V1=M2*V2 --> M1= Molarity of the acid you are diluting V1= Volume of the solution you need to dilute. M2=The molarity of thee solution you have made. V2=Volume of the solution you have made
M1= 1.50 M HCL
V1= Unknown
M2=0.450 M HCL
V2= 500 mL
Simple algebra says that V1= (1.5*500)/.450 = 150 mL of 1.50 M HCL
When is the chemical equilibrium in a chemical equation observed
Answer:
When the concentration of reactants is equal to the concentration of the products. [ when reaction rate is zero ]
Explanation:
This is only observed in a reversible reaction
[tex].[/tex]
The density of water at 40•c is 0.992g/mL. What is the volume of 3.09 g of water at this temperature
Answer: 3.1149193
Explanation:
To calculate for the volume of a substance, simply get the ratio of the mass and density. Which is volume = mass/density.
volume = 3.09/0.992 = 3.1149193
what happens when a burning splinter is introduced in gas jar containing carbon dioxide
Answer:
Explanation:
when a burning splinter is introduced into a jar of carbon dioxide the burning fire gets puts out due to the presence of carbon dioxide which is a colorless odorless gas that prevents the burning of fire
This picture shows students working in a
chemistry laboratory. What could they do to make
their lab safer?
Label the test tubes and plastic cups.
Move the fire extinguisher closer to their
table.
Wear chemical protective gloves.
Reduce the clutter on the table.
Stand at the table instead of sitting. Tie long hair back.
DONE
Answer:
yes it is true they apply necessary safety measures
Answer: Label the test tubes, wear chemical protective gloves, tie long hair back
Explanation:
Just got it wrong
Who first proposed the idea of the atom
hi, there!
The ancient atomic theory was proposed in the 5th century bc by the Greek philosophers Leucippus and Democritus
help i have no idea what i’m doing and i’m failing this class
Answer:
c
Explanation:
esuba is activation energy
Please help me please
Answer:
Sugar solution seperation method is Distillation
iron power and sand separation method is Magnetic separation
petrol and diesel separation method is Fractional Distillation
camphor and galss powder seperation method is Sublimation
have a great day ❤️
Solid calcium oxide and gaseous water are produced by the decomposition of solid calcium oxide hydroxide. Write a balanced chemical equation for this reaction.
[tex]\boxed{\sf {Ca(OH)_2(s)\atop Calcium\:Hydroxide}\longrightarrow {CaO(s)\atop Calcium\;oxide}+{H_2O(g)\atop water}}[/tex]
On reactant side
Hydrogen= 2atomsOxygen=2atomsCalcium=1atomOn product side
Hydrogen=Oxygen=2atomsCalcium=1atom.hence balanced.
What is the treatment and disposal of Mercury
how did your estimated poputation size
compare with the actual population size
Answer:
HE coracle—as I had ample reason to know before I was done with her—was a very safe boat for a person of my height and weight, both buoyant and clever in a seaway; but she was the most cross-grained, lop-sided craft to manage. Do as you pleased, she always made more leeway than anything else, and turning round and round was the manoeuvre she was best at. Even Ben Gunn himself has admitted that she was "queer to handle till you knew her way."
Explanation:
name the types of polymerization and the differences
What is the Molality of a solution prepared by dissolving 84.7 g of KMnO4 (potassium permanganate, an oxidizing agent) in 165 g of water?
a) 0.513 m
b) 11.3 m
c) 0.308 m
d) 3.25 m
e) 0.958 m
hich formula can be used to calculate the molar mass of hydrogen peroxide (H2O2)? (5 points)
Select one:
a.molar mass of H + molar mass of O
b.2 x molar mass of H + molar mass of O
c.molar mass of H + 2 x molar mass of O Incorrect
d.2 x molar mass of H + 2 x molar mass of O
Which of the following statements best defines the actual yield of a reaction? (5 points)
Select one:
a.The amount of product measured after a reaction
b.The ratio of measured yield over theoretical yield
c.The maximum amount of product that can be obtained Incorrect
d.The ratio of measured yield over stoichiometric yield
Answer:
which formula can be used to calculate the molar mass of hydrogen peroxide (H2O2)?
» d.2 x molar mass of H + 2 x molar mass of O
Explanation:
Since we've two hydrogen atoms and two oxygen atoms, we multiply each mass by 2
[tex] = (2 \times hydrogen) + (2 \times oxygen) \\ = (2 \times 1) + (2 \times 16) \\ = 2 + 32 \\ = 34 \: g[/tex]
Which of the following statements best defines the actual yield of a reaction?
» d.The ratio of measured yield over stoichiometric yield
RUNNING OUT OF TIME! !!Please HELP!!
Which option describes the particles of water as liquid water actively boils to become steam?
A. The particles will gain kinetic energy and increase temperature during boiling.
B. The particles lose kinetic energy and decrease temperature during boiling.
C. The particles will have the same average kinetic energy and the same temperature during boiling.
D. The particles will have the same average kinetic energy and a decrease in temperature during boiling.
Answer:
correct answer is A
Explanation:
The option which describes the particles of water as liquid water actively boils to become steam is: A. The particles will gain kinetic energy and increase temperature during boiling.
Water refers to a liquid molecule that is typically made up of two (2) main chemical elements; hydrogen and oxygen in the ratio of two (2) to one (1) [2:1].
Generally, the boiling point of water is approximately at one hundred (100) degrees Celsius and at this temperature, water is typically converted into steam. This is usually as a result of the fact that, the particles of water gains more kinetic energy and an increase in temperature as it boils to become steam.
In conclusion, heating water causes its temperature to increase and the water molecules would gain kinetic energy as it actively boils to become steam.
Read more: https://brainly.com/question/19695951
What do you know about the corpuscular nature of matter?
Answer:
It is a simple and clear account of the development of the codpuscular or, as sortie prefer to call it, the electronic, theory, of matter to explain the passage of electricity through metals and gases.
Explanation:
THE present volume is an expansion of six lectures delivered by; Prof. J. J. Thomson in his capacity of professor at: the Royal Institution. It is a simple and clear account of the development of the corpuscular, or, as sortie prefer to call it, the electronic, theory, of matter to explain the passage of electricity through metals and gases. The last two chapters are devoted to consideration of the properties of model atoms built up of corpuscles, and the evidence in favour of the view that the number of the corpuscles in an atom is about the same as its atomic weight in terms of hydrogen.
assuming that you attend school 180 days a year for 8 hours a day from first through 12th grade youd be in class for a total of 2160 school days how many total years would you have been in school by the time you graduate
Answer:
2160 days divided by 365 days which is a year is equal to about 5.9 years in school * sighhh*
5.91780821918
3.
Carlos is trying to figure out the best place to put his router in order to get the best
signal. Which is not an independent variable?
A. Distance from the router
B. Signal strength at the computer
OUTPU
C. The number of walls between the router and computer
STATIO
D. The number of devices on the router
Answer:
right answer is option no c
Which functional group does ethylamine contain? please help I need to finish this test ASAP
Answer:
its A -NH2 (vmxkgcjfxjfkhcfgk)
Which one of the following is NOT the unit of wave number:
m-1
cm-1
mm-1
cm
Answer:
e
Explanation:
cm is not the unit of wave number out of the following.
What is a wave number?Definition: Total number of wave cycles present in a unit distance is termed a wave number.
Wave number is always a reciprocal of the unit of distance.Wave number is denoted by the letter 'k'.The formula for wave number is 2π/λ where λ is the wavelength. Since wave number is always reciprocal, cm is not the unit for a wave number. The higher the wave number, the higher the frequency and energy.To learn more about wave number, refer to:
https://brainly.com/question/8304265
#SPJ2
Which of the following best describes the make up of Saturn's rings?(1 point) solid bands of sand and dust that formed from the start of the universe solid bands of sand and dust that formed from the start of the universe material from comets that have passed through Saturn's atmosphere material from comets that have passed through Saturn's atmosphere dust, rock, and ice particles that orbit due to Saturn's gravity dust, rock, and ice particles that orbit due to Saturn's gravity debris and rocks from other planets that orbit around Saturn
Answer:
Which of the following best describes the make up of Saturn's rings?(1 point) solid bands of sand and dust that formed from the start of the universe solid bands of sand and dust that formed from the start of the universe material from comets that have passed through Saturn's atmosphere material from comets that have passed through Saturn's atmosphere dust, rock, and ice particles that orbit due to Saturn's gravity dust, rock, and ice particles that orbit due to Saturn's gravity debris and rocks from other planets that orbit around Saturn
The make up of Saturn's ring are dust, rock, and ice particles that orbit due to Saturn's gravity"
Saturn is one of the 9 planets of the solar system. It is considered to be the second largest planet.
Saturn has seven large rings orbiting around it. These rings are believed to be pieces of comets, asteroids, or shattered moons that broke up before they reached the planet. And this shattered comets or asteroid are believed to be torn apart by Saturn's powerful gravity.
These comets or asteroids are made of billions of small chunks of ice and rocks which are covered or coated with other small materials such as dust particles.
Thus, the correct option that matches the above explanation is "dust, rock, and ice particles that orbit due to Saturn's gravity"
Learn more here: https://brainly.com/question/24569357
