Answer: Convection Currents
Explanation:
Due to the different temperature occurring at the upper and lower layers of the mantle, it causes heat transfer to occur. One of such heat transfer is the Convection currents which causes warmer, less dense rock material in the core to rise through the mantle. Also, the cooler rocks in the higher mantle move slowly towards the core.The movement caused by these Convection current in the Earth are called plate tectonics which are responsible for earthquakes and volcanoes.
PLEASE HELP. WILL GIVE BRAINLIEST AND QUESTION WORTH A 100 POINTS. NEED ANDWER ASAP!
Conclusion: In a paragraph, describe how physical and chemical properties help us
identify the difference between metals, nonmetals and metalloids. Discuss
characteristics that metals have in common, characteristics that nonmetals have in
common, and characteristics that metalloids have in common.
Answer:
extensive properties such as mass and volume depend on something like perhaps the amount of what's measured. physical properties can be measured without changing substance chemical identity.
metals are the elements which exhibit degree of metallic behavior is know as metals. non metals are such elements which do not posses any metallic behavior and mekkloids are those elements that posses some of the properties like metal. but they act either like metals or non metals n they also have the same physical properties
Which products would form if chlorine gas was bubbled through a solution of sodium bromide?
a. Na and BrCl
b. Na snd BrCl2
c. Na and Br2
d. Na(cl)2 and Br2
Answer:
NaCl and Br2
Explanation:
Edge 2020
Answer:
The Answer is C: Na and Br3
Explanation:
You have a particle of length 68 nm. What is this in meters? ( need help asap)
Answer:
B
Explanation:
Help Please with this
What is the molar mass of carbon?
how does the earth give us what we call and night
Answer:
the Earth rotates on an imaginary line called its axis and different parts of the planet are facing towards the Sun or away from it. it takes 24 hours for the world to turn all the way around, and we call this a day.
Explanation:
help me please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
In an electrically neutral atom of any element, there are equal numbers of
A. Protons and neurons.
B. electrons and procons.
C. electrons and neurrons.
D. atomic number and atomia mess. 5
Answer:
B. electrons and protons.
Explanation:
In an electrically neutral atom of any element, there are equal number of protons and electrons in the atom.
Protons are the positively charged particles in an atom.
Electrons are the negatively charged particles within the atom.
When the number of protons and electrons are the same or equal, the atom is neutral.
But when there is an imbalance, an ion results.
- Is energy absorbed or released by a material during the phase change from a solid to a liquid?
A)Absorbed
B)Released
Answer:
A) Abosrbed
Explanation:
The change is endothermic, meaning the material absorbs energy when it changes its phase from a solid to a liqiud.
A wave in which particles of matter vibrate at right angles to the direction
the wave travels is called a(n) wave.
Enter the answer
Check It
Answer:
it will transverse wave I think it will help you
what volume (in L) of ethane (C2H6) will be required to produce 42.5 L of carbon dioxide in the reaction below?
2C2H6(g)+7O2(g)->4CO2(g)+6H2O(g)
Answer:
21.25
Explanation:
4. Calculate the molar mass of Fe2(SO4)3. Then calculate the mass of iron(III) sulfate of 4.05X1023 formula units. Answer: __269g Fe2(SO4)3_
Answer:
399.88 [tex]\frac{4.05*10^{23} }{6.022*10^{23} }[/tex] =269
Explanation:
399.88 is the molar mass of iron(III) sulfate.
The mass of 4.05 × [tex]10^{23[/tex] formula units of Fe2(SO4)3 is approximately 6.48 × [tex]10^{25[/tex] grams.
Mass from formula unitsTo calculate the molar mass of Fe2(SO4)3, we need to determine the atomic masses of the individual elements involved and multiply them by their respective subscripts:
Fe: 55.845 g/mol (atomic mass of iron)S: 32.06 g/mol (atomic mass of sulfur)O: 16.00 g/mol (atomic mass of oxygen)Fe2(SO4)3 consists of 2 iron atoms, 3 sulfur atoms, and 12 oxygen atoms:
Molar mass of Fe2(SO4)3 = (2 * 55.845) + (3 * 32.06) + (12 * 16.00) = 159.69 g/mol
To calculate the mass of 4.05 × 10^23 formula units of Fe2(SO4)3, we can use the molar mass:
Mass = (4.05 × 10^23) * (159.69 g/mol) = 6.48 × 10^25 g
Rounded to two decimal places, the mass of 4.05 × [tex]10^{23[/tex] formula units of Fe2(SO4)3 is approximately 6.48 × [tex]10^{25[/tex] grams.
More on formula units can be found here: https://brainly.com/question/33740227
#SPJ6
A sample of methane gas collcted t a pressure of 0.0884 atm and a temperature of 6.00 C is found to occupy a volume of 26.5 L. How many moles of CH4 gas are in the sample? ____ mol
Answer:
0.1mole
Explanation:
Given parameters:
Pressure = 0.0884atm
Temperature = 6°C = 6 + 273 = 279K
Volume occupied = 26.5L
Unknown:
Number of moles = ?
Solution:
To solve this problem, we are going to use the ideal gas equation:
PV = nRT
P is the pressure
V is the volume
n is the number of moles
R is the gas constant = 0.082atmLmol⁻¹k⁻¹
T is the temperature.
Insert the parameters and solve for n;
0.084 x 26.5 = n x 0.082 x 279
n = 0.1mole
Turning on your X-Box is an example of___ energy turning into ___ energy.
A.electrical,nuclear
B.nuclear,sound
C.electrical,light
D.electrical,chemical
Answer:
electrical --> light
Explanation:
What happened when you placed your bottle system
in cold water?
Answer:
The water level in the pipe went down.] ... [The hot water in the cup heated up the water particles inside the bottle. They began to move more. Greater motion (kinetic energy) pushed the particles farther apart, resulting in expansion.
What are the homologous series?
Explanation:
Homologous series are the series belonging to a series of aliphatic organic compounds that differ only by the addition of a CH2 group
Hope it will help :)❤
Sally is building a list of the types of matter that have energy. She includes liquids on her list because she can see that liquids flow. Is her list complete?
a. yes, her list with just liquids on it is complete
b. no, she should add only gases to her list
c. no, she should add only solids to her list
d. no, she should add gases and solids to her list
Answer:
I just looked up the types of matter energy has.
Explanation:
I believe the answer is D.
Sally's list of matter that have energy is not complete as all the types of matter have energy as all matter have mass , and mass and energy are related, so she should have added gases and solids to her list.
What is matter?Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of the same type.
Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.
The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.
Learn more about matter,here:
https://brainly.com/question/13556931
#SPJ2
What is an animal-like, unicellular protist called?
protozoan
euglenoid
slime mold
decompos
Answer:
protozoan
Explanation:
An animal - like unicellular protist is called a protozoan. Such organisms shows similarities with animals.
Protozoans are unicellular organisms. They are similar to animals in that they perform nearly all life functions that makes animals very unique. They are mostly heterotrophs which feed on foods that have been produced by autotrophs. Examples are flagellates and ciliates.Can someone help
Me out pls if your good at chemistry
Chemistry 1 - Types of Radioactive Decay
Answer:
Explanation:
The reaction expression is given as:
⁴⁰₁₈ Ar → X + ⁰₁B
To solve this problem, we must bear in mind that both mass number and atomic number must be conserved.
So;
For the mass number:
40 = A + 0
A = 40
For atomic number:
18 = Z + 1
Z = 18 - 1 = 17
An atom is identifiable by the atomic number. Since the atomic number of X is 17 then it is Cl, chlorine
A breeder reactor is one type of nuclear reactor. In a breeder reactor, uranium-238 is transformed in a series of nuclear reactions into plutonium-239.
The plutonium-239 can undergo fission as shown in the equation below. The X represents a missing product in the equation.
Compare the amount of energy released by completely fissioned plutonium-239 to the amount of energy released by the complete combustion of the same amount of coal.
Answer:hope this help
Explanation:
Apollo 11 made a ______ landing.
Answer:
Apollo 11 made a capsule landing
Explanation:
Answer: i don’t know what type of landing you mean
Explanation:
They did a lunar landing then reentry and then capsule landing.
The compound F2O has two lone pairs on the central oxygen atom. What's the structure of an F2O molecule? Is this compound polar or non-polar? Question 1 options: A) Bent or angular, polar B) Trigonal planar, polar C) Bent or angular, non-polar D) Trigonal planar, non-polar
Answer: A) Bent or angular, polar
Explanation:
The central atom oxygen has two lone pairs and two bond pairs in [tex]OF_2[/tex]. The number of electron pairs are 4, that means the hybridization will be [tex]sp^3[/tex] and the electronic geometry of the molecule will be tetrahedral. But as there are two lone pair of atoms around the central oxygen atom, repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be bent shape.
The compound [tex]OF_2[/tex] is polar as the net dipole moment of oxygen - fluoride bonds do not cancel each other out.
Observe the image of sodium. List the properties you see.
Answer:
It is soft and white. It has a low melting and boiling point, a good conductor electricity, and reacts with water. Furthermore, it is also highly reactive, malleable, and ductile.
Explanation:
Hope I helped!
Answer:
silvery-white and waxy
Explanation:
Properties means the observations you can make just by looking at it or the qualities that the object has.
So when I looked at the sodium I saw a silvery-white metal (sodium is a metal), that has this waxy appearance to it.
Stephanie the Skydiver has a mass of 48kg, what is the force that she
exerts as she is falling to the ground?
Answer:
470.4N
Explanation:
Given parameters:
Mass of Stephanie = 48kg
Unknown:
Force she exerts while falling to the ground = ?
Solution:
The force she exerts is her weight;
Weight = mass x acceleration due to gravity
Now insert the parameters ands solve ;
Weight = 48 x 9.8 = 470.4N
PLEASEEEE HELPP
If 359 mL of a gas were contracted to only 269 mL, what would be the initial temperature of it if it measured 422 K after the change?
I NEED IT FAST!!
Answer:
T₁ = 563.19 K
Explanation:
Given data:
Initial volume = 359 mL
Final volume = 269 mL
Final temperature = 422 K
Initial temperature = ?
Solution:
The given problem will be solve through the Charles Law.
Charles Law:
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
T₁ = V₁T₂ / V₂
T₁ = 359 mL × 422 K / 269 mL
T₁ = 151498 mL.K / 269 mL
T₁ = 563.19 K
what elements comprise the largest portion of Earth's atmosphere?
Answer:
Nitrogen and Oxygen make up 99% of the Earths atmosphere. Then Argon makes up the rest of the atmosphere.
3. A property of acids is that they taste sour. A
property of bases is that they feel slippery. Would
you use either of these properties to identify an
unknown substance? Why or why not?
Explanation:
Touching or tasting these unknown substances could be lethal or cause severe burns to your skin, so it is advisable to use other methods to identify substances.
I traveled for 0.5 hr at 80 km/h. How far did I travel?
Answer:
[tex]Distance = 40km[/tex]
Explanation:
Given
[tex]Speed = 80km/hr[/tex]
[tex]Time = 0.5hr[/tex]
Required
Determine the distance covered
Distance is calculated as:
[tex]Distance = Speed * Time[/tex]
Substitute values for Speed and Time
[tex]Distance = 80km/hr * 0.5hr[/tex]
[tex]Distance = 80km * 0.5[/tex]
[tex]Distance = 40km[/tex]
Hence, you travelled 40km
the rate of effusion of co2 gas through a porous barrier is observed to be 9.31x 10^-4 mol/h. under the same conditions, the rate of effusion of N2 gas would be _______ mol/h
Answer:
[tex]1.167\times 10^{-3}\ \text{mol/h}[/tex]
Explanation:
[tex]R_1[/tex] = Rate of diffusion of [tex]CO_2[/tex] = [tex]9.31\times 10^{-4}\ \text{mol/h}[/tex]
[tex]R_2[/tex] = Rate of diffusion of [tex]N_2[/tex]
[tex]M_1[/tex] = Molar mass of [tex]CO_2[/tex] = 44.01 g/mol
[tex]M_2[/tex] = Molar mass of [tex]N_2[/tex] = 28.0134 g/mol
From Graham's law we have the relation
[tex]\dfrac{R_1}{R_2}=\sqrt{\dfrac{M_2}{M_1}}\\\Rightarrow R_2=\dfrac{R_1}{\sqrt{\dfrac{M_2}{M_1}}}\\\Rightarrow R_2=\dfrac{9.31\times 10^{-4}}{\sqrt{\dfrac{28.0134}{44.01}}}\\\Rightarrow R_2=1.167\times 10^{-3}\ \text{mol/h}[/tex]
The rate of effusion of the [tex]N_2[/tex] gas would be [tex]1.167\times 10^{-3}\ \text{mol/h}[/tex].
