Answer:
the total kinetic andd potential energies of all its particles
Explanation:
other brainly questions
Answer:
Hey mate....
Explanation:
This is ur answer....
The thermal energy of an object is the energy contained in the motion and vibration of its molecules. Thermal energy is measured through temperature. The energy contained in the small motions of the object's molecules can be broken up into a combination of microscopic kinetic energy and potential energy.
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True or False: Air pollution contributes to global warming.
A. True
B. False
Why does our body need to use both mechanical and chemical digestion when we are breaking down our food?
Answer:
Chemical digestion is a vital part of the digestive process. Without it, your body wouldn't be able to absorb nutrients from the foods you eat, also chemical digestion uses enzymes to break down food
mechanical digestion involves physical movements, such as chewing and muscle contractions,
Explanation:
Write the electron configuration for . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.)
The given question is incomplete. The complete question is:
Write the electron configuration for [tex]Ca^+[/tex] . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for [tex]Ca^{2+}[/tex] . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for [tex]Se^{2-}[/tex] . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for [tex]S^{2-}[/tex]. (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.)
Answer:
[tex]Ca^+:19:[Ar]4s^1[/tex]
[tex]Ca^{2+}:18:[Ar][/tex]
[tex]Se^{2-}:32:[Ar]3d^{10}4s^24p^2[/tex]
[tex]S^{2-}:18:[Ar][/tex]
Explanation:
Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.
The electrons are filled according to Afbau's rule in order of increasing energies. The positively charged species are formed by loss of electrons and negatively charged species are formed by gain of electrons.
[tex]Ca:20:[Ar]4s^2[/tex]
[tex]Ca^+:19:[Ar]4s^1[/tex]
[tex]Ca^{2+}:18:[Ar][/tex]
[tex]Se:34:[Ar]3d^{10}4s^24p^4[/tex]
[tex]Se^{2-}:36:[Ar]3d^{10}4s^24p^6[/tex] or [tex]Se^{2-}:36:[Kr][/tex]
[tex]S:16:[Ne]3s^23p^4[/tex]
[tex]S^{2-}:18:[Ne]3s^23p^6[/tex] or [tex]S^{2-}:18:[Ar][/tex]
An airplane flew 3043 km from Houston to Seattle in 5.5 hours. What was the average speed, in m/s rounded to the nearest hundredth, of the airplane from Houston to Seattle?
An airplane flew 3043 km from Houston to Seattle in 5.5 hours. What was the average speed, in m/s rounded to the nearest hundredth, of the airplane from Houston to Seattle?
The answer is 553
Answer:
553
Explanation:i did this question today and it was right!
The temperature of water decreases on the dissolution of NH4NO3. From this observation, we can conclude that the solution process would be best described asa)exothermic with a positive entropy change.b)exothermic with a negative entropy change.c)endothermic with a negative entropy change.d)endothermic with a positive entropy change.e)exothermic with a negative free energy change
Answer: d)endothermic with a positive entropy change
Explanation:
Endothermic reactions are those in which heat is absorbed by the system and exothermic reactions are those in which heat is released by the system.
Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.
As temperature of water decreases on dissolution of [tex]NH_4NO_3[/tex] , it means heat has been absorbed by [tex]NH_4NO_3[/tex] during dissolution and that heat is taken from water. Thus process is endothermic. As dissolution will lead in the formation of ions [tex]NH_4^+[/tex] and [tex]NO_3^-[/tex] , randomness will increase and thus there is a positive entropy change.
What mass of lithium phosphate would you mass to make 2.5 liter of 1.06 M lithium
phosphate solution?
Answer:
Approximately [tex]3.06 \times 10^{2}\; \rm g[/tex] (approximately [tex]306\; \rm g[/tex].)
Explanation:
Calculate the quantity [tex]n[/tex] of lithium phosphate in [tex]V = 2.5\; \rm L[/tex] of this[tex]c = 1.06\; \rm M = 1.06\; \rm mol \cdot L^{-1}[/tex] lithium phosphate solution.
[tex]\begin{aligned}n &= c \cdot V\\ &= 2.5\; \rm L \times 1.06\; mol \cdot L^{-1}\\ &= 2.65\; \rm mol\end{aligned}[/tex].
Empirical formula of lithium phosphate: [tex]\rm Li_3PO_4[/tex].
Look up the relative atomic mass of [tex]\rm Li[/tex], [tex]\rm P[/tex],and [tex]\rm O[/tex] on a modern periodic table:
[tex]\rm Li[/tex]: [tex]6.94[/tex].[tex]\rm P[/tex]: [tex]30.974[/tex].[tex]\rm O[/tex]: [tex]15.999[/tex].Calculate the formula mass of [tex]\rm Li_3PO_4[/tex]:
[tex]M(\rm Li_3PO_4) = 3 \times 6.94 + 30.974 + 4 \times 15.999 = 115.79\; \rm g \cdot mol^{-1}[/tex].
Calculate the mass of that [tex]n = 2.65\; \rm mol[/tex] of [tex]\rm Li_3PO_4[/tex] formula units:
[tex]\begin{aligned}m &= n \cdot M \\ &= 2.65\; \rm mol \times 115.79\; \rm g\cdot mol^{-1} \\ &\approx 3.06 \times 10^{2}\; \rm g \end{aligned}[/tex].
You see the middle layer of the sun’s atmosphere, the _____________, at the start and end of a total eclipse.
Answer:
Chromosphere
Explanation:
You see the middle layer of the sun’s atmosphere, the Chromosphere, at the start and end of a total eclipse.
(04.04 MC)
Which table best shows the impacts resulting from human activity? (6 points)
Answer:
B
Explanation:
Answer:
B its correct because i did the test.
Explanation:
_____ is the state of matter of the sun and stars
A. solid
B. liquid
C. gas
D. plasma
Answer:
the answer is gas
Explanation:
It is usually said that the sun is a fiery ball of gases, but, actually, most of it is plasma, which isn't quite the same thing, although hot gas and plasma are often used interchangeably. Plasma is known as the fourth state of matter, following solid, which is the first and coldest state.
HELP ASAP Describe how transferring energy into the substance affected the speed of the molecules. (Amplify science)
Answer:The faster the molecules of a substance move, the higher the kinetic energy, and the higher the temperature
Energy can be transfer from a substance through a process called conduction. In conduction, faster-moving molecules contact slower-moving molecules and move energy to them.
What do you mean by the conduction ?The term conduction is defined as the process by which heat energy is transferred through collisions between neighboring atoms or molecules.
Conduction occurs more promptly in solids and liquids, where the particles are closer together than in gases, where particles are further apart.
The faster the molecules of a substance change, the higher the kinetic energy, and the higher the temperature.
Thus, During conduction the slower-moving molecules speed up and the faster-moving molecules slow down.
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answer with explanation and you’ll get brain list
Answer:
Option D.
Explanation:
6H₂ + P₄ → 4PH₃First we convert the given reactant masses into moles, using their respective molar masses:
4.00 g H₂ ÷ 2 g/mol = 2 mol H₂6.20 g P₄ ÷ 124 g/mol = 0.05 mol P₄0.05 moles of P₄ would react completely with (6*0.05) 0.3 moles of H₂. There are more H₂ moles than required, meaning H₂ is in excess and P₄ is the limiting reactant.
Now we calculate how many PH₃ moles could be formed, using the number of moles of the limiting reactant:
0.05 mol P₄ * [tex]\frac{4molPH_3}{1molP_4}[/tex] = 0.2 mol PH₃Finally we convert 0.2 mol PH₃ into grams, using its molar mass:
0.2 mol PH₃ * 34 g/mol = 6.8 gSo the correct answer is option D.
How many moles of H20 are needed to produce 1 mole of O2 in the following equation?
2H2O + 2H2 + 102
What do these two changes have in common? Shaking up salad dressing. Adding dish soap to water in a sink
Calculate the formula weight or molecular for the following:
a. LiCI
b. SO2 (The 2 is in subscript)
Answer:
42.39, 64.06
Explanation:
Formula Weight can be calculated by adding the atomic mass of the elements in the formula.
LiCl
AM for Li is 6.94 amu, AM for Cl is 35.45 amu
[tex](6.94)+(35.45)=42.39[/tex]
SO₂
AM for S is 32.06 amu, AM for O is 16 amu
[tex](32.06)+2(16.00)=64.06[/tex]
this organ has 2 parts, the cervix, which is the lower part that opens into the vagina, and the main body, called the corpus.
Answer:
The correct answer is - the uterus.
Explanation:
The uterus or the womb is an organ that appears to be pear-shaped and it is hollow from inside where the fetus is developed and it is also called the birth canal. The uterus has two parts one is the cervix and the other is the corpus.
The cervix makes the lower part of the uterus and opens up into the vagina the external reproductive organ of the females. The corpus is the part that makes the main body of the uterus. The uterus is present between the bladder and rectum where the egg fertilized and implanted itself.
24. Explain what happens at the particle level when a solid melts.
Answer:
When a solid is heated the particles gain energy and start to vibrate faster and faster. ... At this point the solid is melting to form a liquid. The particles in the liquid are the same as in the solid but they have more energy.
Explanation:
sana maka help
Now run this simulation that demonstrates the properties of gases. The simulation shows a container with a lid on top. The lid can be opened and closed by dragging it left and right. On the left side of the container is a yellow handle. Drag this handle right or left to decrease or increase the volume of the container. On the top right of the container are a thermometer and a pressure gauge. Follow these steps to use the simulation, and then answer the question that follows. 1. Reduce the container to its least volume by dragging the yellow handle as far right as you can. 2. In the Gas in Chamber menu, add 80 molecules of heavy species to the container. 3. In the Constant Parameter menu, select Pressure. 4. Increase the number of heavy species molecules to 200. What do you observe when the molecules are increased from 80 to 200 at constant pressure?
link http://contentstore.ple.platoweb.com/content/sharedmedia/phet_sims_batch2/gas-properties/gas-properties_en.html
Answer:
The pressure will increase linearly if you increase the moles/molecules of gas
Explanation:
A gas occupies 5.31 liters at a pressure of 0.55 atm. Determine the volume at standard pressure.
A. 2.92
B. 8.28L
C. 3.54 L
D. 9.65L
Answer:
Option A; V = 2.92 L
Explanation:
If we assume a lot of things, like:
The gas is an ideal gas.
The temperature is constant.
The gas does not interchange mass with the environment.
Then we have the relation:
P*V = n*R*T = constant.
Where:
P = pressure
V = volume
n = number of moles
R = constant of the ideal gas
T = temperature.
We know that when P = 0.55 atm, the volume is 5.31 L
Then:
(0.55 atm)*(5.31 L) = constant
Now, when the gas is at standard pressure ( P = 1 atm)
We still have the relation:
P*V = constant = (0.55 atm)*(5.31 L)
(1 atm)*V = (0.55 atm)*(5.31 L)
Now we only need to solve this for V.
V = (0.55 atm/ 1 atm)*(5.31 L) = 2.92 L
V = 2.92 L
Then the correct option is A.
What is the formula for Heptaphosphorous pentoxide?
Answer:
P7F8
Explanation:
correct formula isP7F8
There are clouds forming over Florida. The temperatures in the clouds and in the air are above freezing. Which form of precipitation do you expect Florida to get and why?
Answer:
Rain
Explanation:
Clouds are formed from water vapor, which turns into ice when the temperature is below freezing, and falls as liquid rain water when temperatures are above freezing. Since the temperatures in the clouds and in the air are above freezing, rain will fall in Florida.
Answer:
Rain
Explanation:
The correct Lewis structure for the sulfur atom has
Answer:
For a dot structure, I will explain it.
Explanation:
So there's an S (the symbol for Sulfur) and on the top, there are two dots, as well as two on the left side. On the bottom and right of the symbol, there is only 1 dot on each of these sides.
The correct Lewis structure for the sulfur atom has six dots. These six dots are distributed in such a way that two dots are present at the top, two are on the left side, and one each is on the bottom and right side.
What is Lewis's structure?Lewis's structure may be defined as a structural representation of a molecule where dots are used to show electron positions around the atoms and lines or dot pairs represent covalent bonds between atoms.
Sulfur has an atomic number of 16. Its electronic configuration is 2, 8, and 6. It represents that the sulfur atom has six valence electrons. These six electrons are represented by dots in the Lewis structure.
Each sulfur atom is connected to an identical atom on either side by single covalent bonds. This ensures the sulfur completes its octet.
Therefore, the correct Lewis structure for the sulfur atom has six dots.
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Use the information to answer the following question.
Hot air balloons use a flame that can turn on and off to heat air inside a large balloon. The balloon is attached to a basket which can carry people or cargo as it is lifted off the ground and floats in the air.
Using what you know about gases, predict which approach would allow the hot air balloon to reach the highest height?
A.
Turn on the flame for 10 seconds each minute for 10 minutes to increase the density of the air inside the balloon.
B.
Turn on the flame for 10 seconds each minute for 2 minutes, and cut a large hole in the balloon material to allow excess air out.
C.
Turn on the flame for 30 seconds each minute for 10 minutes to decrease the density of the air inside the balloon.
D.
Turn on the flame for 30 seconds each minute for 2 minutes, and cut a large hole in the balloon material to allow excess air out.
Answer:
c
Explanation:
Answer:
C. Turn on the flame for 30 seconds each minute for 10 minutes to decrease the density of the air inside the balloon.
Explanation:
Are real or ideal gases used in labs?
How does nitrogen-fixing bacteria make nitrogen available to plants and animals?
Answer:
hi thxs for the points now bye
Answer:
Nitrogen-fixing bacteria in the soil and within the root nodules of some plants convert nitrogen gas in the atmosphere to ammonia. Nitrifying bacteria convert ammonia to nitrites or nitrates. Ammonia, nitrites, and nitrates are all fixed nitrogen and can be absorbed by plants.
Explanation:
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Which of the following is NOT considered evidence for plate tectonics? *
1 point
Earthquakes and volcanoes occur along specific zones.
Meteorite craters are found in various locations around the world.
The seafloor is separating along mid-ocean ridges.
The coastlines of South America and Africa seem to match up.
Answer:
It should be B
Explanation:
I hope this helps
Match it, I’m not sure which category they go in
Answer:
Endothermic is something that needs heat added into it, while exoteric gives heat off
Explanation:
1. Endo(Melting ice)
2. Endo(heat enters the system)
3. Exothermic(making ice)
4. Endothermic( liquid to gas)
5. Exothermic(campfire)
6. exothermic(gas to a liquid)
7. Exothermic (the flame of a candle)
8. Exothermic (heat leaves the system)
9. I don’t know if photosynthesis is exo or endothermic
In an experiment, the molar mass of the compound was determined to
be 228.276 g/mol. What is the molecular formula of the compound? Please help!
Features passed from parent to offspring, such as eye color, is an example of what?
What is the name of the anion in sodium carbonate?
Answer: Sodium salt
Explanation: sorry if this is wrong
define carbon and itz state in which it is found
Answer:
Carbon is a nonmetal which has two mains; diamond and graphite.
Carbon is found in a solid state.
Explanation: