Answer: Both the given species are isotopes of the same element.
Explanation:
An isotope is defined as the chemical species that have the same atomic number but a different mass number.
The atom consists of 3 subatomic particles:
Protons: They are positively charged particles present in the nucleus of an atom. Electrons: They are negatively charged particles present in the orbits around the nucleus of an atom. Neutrons: They are neutral particles present in the nucleus of an atom.An atomic number is defined as the number of protons or number of electrons present in a neutral atom. It remains specific for a particular element.
Mass number is defined as the sum of the number of protons and neutrons present in the nucleus of an atom.
Given values:
For isotope 1:
Number of protons = 11 = atomic number
Number of neutrons = 13
Mass number = 11 + 13 = 24
For isotope 2:
Number of protons = 11 = atomic number
Number of neutrons = 12
Mass number = 11 + 12 = 23
As the atomic number of both the isotopes is the same. Thus, they belong to the same elements.
Which of these solutions has the highest vapor pressure at 25°C?
A. 0.10 Molar C6H1206
B. 0.10 Molar NaF
C. 0.10 Molar MgCl2
D. 0.10 Molar K3P04
Solution :
We know, In an electrolyte solution, the number of dissolved particles is larger because the solute breaks apart into ions. The greater the number of ions, the larger the impact on colligative properties will be.
So, the compound which will dissociate into more number of electrolyte has more vapour pressure.
Out of all given compound K₃PO₄ have highest number of particles after dissociation.
Hence, D) is the required solution.
Th following diagram is an example of a(n) [Hurry!!]
A. Covalent Bond
B. Ionic Bond
C. Metallic Bond
The following diagram is an example of a(n) [Hurry!!]
A. Covalent Bond ✓ answer
B. Ionic Bond
C. Metallic Bond
Answer:
This is the diagram of covalent bond
Please help!!!!!
Due soon really need help
Answer:
a is 16 as the molar ratio is 4:2=2:1
b is 10 as the ratio is 4:2
Why is the C-14/C-12 ratio used to date once-living organisms?
A. C-12 becomes radioactive when an organism dies.
B. The amount of C-12 changes when an organism dies.
C. The half-life of C-14 changes when an organism dies.
D. An organism stops taking in carbon when it dies.
4. How is ethanol made?
A. By fermenting sugars and starches
B. By composting grass cuttings and dinner table scraps
C. By boiling water and corn oi
D. By releasing carbon dioxide into the atmosphere
O
Pls help me this is my last question
Answer: how much mass is in a certain amount of space
Explanation: density is g/mL; therefore it’s the mass (g) in a certain amount of space (mL)
Answer:
the answer would be how much mass is in a certain amount of space
Explanation:
. Element X has a nucleon (mass) number of 19 and a proton (atomic) number of 9.
To which group in the Periodic Table does it belong?
a ] I
B] III
C] VII
D] 0
Answer:
C
Explanation:
it belong to that group as it needs 1 electron to be chemically stable
Name the parts of a chemical reaction, and describe both
what going on in each spot
nothing ksbsshshhzvsjajbsjshjsgdvdjhsbsj
Answer:
I don't know lol
Please answer correctly I still need help on this. I will give brainliest (No links or fake answers will receive no brainliest)
How many grams of AlCl3 are needed to completely react with 2.25 of NaOH?
Hope the picture help u understand I did it in steps so it would be easier to understand:)
Is 22.99 mol of Na equal or not equal to Avogadro's number?
Answer:
It is not equal to Avogadro constant
Explanation:
This is because Avogadro constant refer to the number of molecules or atoms of particles per mile substance and thus is equal to 6.022×10^23 per mile or unit of that substance.
Hospital patients are administered oxygen from an pressurized
hyperbaric oxygen chamber. 600.0 L of oxygen is compressed in a
cylinder at 160.0 atm. What volume of oxygen can a cylinder supply at a
pressure of 3.0 atm?
Answer:
32000atm
Explanation:
Using Boyle's law equation;
P1V1 = P2V2
Where;
P1 = initial pressure (atm)
P2 = final pressure (atm)
V1 = initial volume (
V2 = final volume (L)
According to the question below:
P1 = 160.0 atm
P2 = 3.0 atm
V1 = 600L
V2 = ?
Using P1V1 = P2V2
160 × 600 = 3 × V2
96000 = 3V2
V2 = 96000/3
V2 = 32000atm
Please help me school ends tomorrow
Which scenario describes a transfer of mechanical energy to heat and sound energy?
Question 7 options:
A)
a plant using energy from the sun to create food
B)
a very high pitched sound causing a glass to break
C)
talking into a microphone.
D)
clapping hands
Answer:
D) clapping handsExplanation:
hope it's helpful
If 0.500 moles of silver nitrate were consumed, how many moles of calcium nitrate would be produced?(make sure to balance the chemical equation first)
AgNO3 + CaCl2 → Ca(NO3)2 + AgCl
Answer:
Explanation:
AgNO3 + CaCl2 ⇒ Ca(NO3)2 +AgCl
2AgNO3 + CaCl2 ⇒ Ca(NO3)2 + 2AgCl
Separation of mixtures by removing a layer of liquid
Answer:
Decantation
Explanation:
If an ecosystem is left alone after a disturbance, it will gradually change from being mostly competitive to being mostly cooperative. True or false?
true
false
plsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss answer with one of the options
Answer:
false
Explanation:
Answer:
True
Explanation:
I did the test, and I answered "false".... It was the wrong answer :(
I think the right anwser is "True" because after a disturbance an ecosystem can recover back its balanced state, so the organisms start to cooperate again.
(only reply if you know the answer or get reported) Please solve this ty
Answer:
7) 50 8)4
Explanation:
I answered the question what do you want to gave me
Pls help
Three gases are added to a single tan of the same size. The first gas is currently at 303.9kPa, the second at 1900tor and the third at 132.3PSI. To one
decimal place, what are the percentages for each gas of the total pressure in the tank?
Answer:
See Explanation
Explanation:
We must first convert the gas pressures to a common unit. I choose to convert all pressures to kiloPascal.
Since;
1 kilopascal = 7.501 torrs
X. =1900tor
X= 1900 × 1/7.501
X= 253.3 Kpa
Since 1 PSI =6.895 kilopascals
132.3PSI = 132.3 × 6.895/1
= 912.2 Kpa
Total pressure = 303.9kPa + 912.2 Kpa + 253.3 Kpa = 1468.8 kPa
For first gas;
303.9/1468.8 × 100 = 20.7%
For second gas;
912.2/1468.8 × 100 = 62.1%
For the third gas;
253.3/ 1468.8 × 100 = 17.2%
help please ? i’m being timed andnjdjd
Answer:
the last 2
Explanation:
pls mark me brainliest
500 ml of 3.31 M HCl is mixed with 56.1 g NaOH to produce water and table salt.
What mass of NaCl is produced?
ss
Answer:
m=1,48g
Explanation:
What is a gas’s temperature in Celsius when it has a volume of 25 L, 203 mol, 143.5 atm?
To Find :
Gas’s temperature in Celsius when it has a volume of 25 L, 203 mol, 143.5 atm .
Solution :
We know, by ideal gas equation :
[tex]PV =nRT\\\\T = \dfrac{PV}{nR}[/tex]
Here, R is universal gas constant and [tex]R = 0.082 \ L \ atm \ mol^{-1} \ K^{1}[/tex]
Putting all given values and R in above equation, we get :
[tex]T = \dfrac{PV}{nR}\\\\T = \dfrac{143.5\times 25}{203 \times 0.082}\ K\\\\T = 215.52\ K[/tex]
Hence, this is the required solution.
True or False. The loads in a parallel circuit do not necessarily all have the same amount of current in them.
Answer:
TRUE
Explanation:
In the food chain below, what energy is available to the wolf?
A. Some of the energy transferred from the Sun, to the grass, to the deer.
B. All of the energy transferred from the Sun, the grass, and deer.
C. All of the energy transferred from the Sun to the grass.
D Some of the energy transferred from the Sun, but none from the grass or the deer.
Answer: A
Explanation:
The sun will give energy to the grass, giving the ability to grow. The deer will then come along and eat the grass transferring some of that energy to the deer, giving it the energy to do it's daily activities, then the wolf will eat the deer, only transferring some of the energy to the wolf, because the deer had ahead used some of the energy and it came out as feces ect.
What is the correct order of coefficients to balance this equation?
20 points
_Al + _CuSO, → __AI (SO) + _Cu
2321
1231
O 1232
O 2313
Answer:
2Al + 3CuSO4 → Al2(SO4)3 + 3Cu
Explanation:
I THINK
Wetlands provide habitats for many living things because of their sheltered waters and what other feature?
Answer:
large supply of nutrients.
Explanation:
In a wetland, the soil is covered by water or is almost covered by water. This water may be coming upwards from an underground aquifer. Wetlands are covered by water for most of the year.
They are sheltered waters and do provide habitats for many living things.
Nutrients such as; Carbon sulfur, phosphorus, carbon, and nitrogen are cycled within the soil of wetlands hence wetlands have a large supply of nutrients.
Scientists have observed that hurricanes are strongest over water, and that hurricanes lose momentum and become weak when they reach land. Which statement best explains this observation?
The ocean tides provide energy to hurricanes.
The ocean winds provide energy for hurricanes.
The warm water provides moisture for hurricanes.
The Coriolis Effect provides moisture for hurricanes.
Answer:
Explanation:
The warm water provides moisture for hurricanes so that hurricanes are strongest over water, and become weak when they reach land.
What is hurricane?Hurricanes are forceful winds in the air which are able to destroy even a land completely. One of the most destructive forces on earth is the hurricane. Although the process of a origin of hurricane is complex.
They need water that is at least 80 degrees first. Air that is wet is the second component. Finally, for a hurricane to form, there must be convergent winds.
A group of thunderstorms moving across the ocean's surface signal the start of the real process. Similar to how a straw absorbs liquid, when the surface water is heated, the storm absorbs heat energy from the water. The air becomes moistened as a result.
The storm can develop into a hurricane if the wind conditions are right. The fuel is this thermal energy. Hence, option c is correct.
To find more on hurricanes, refer here:
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[tex]what \: is \: sound \: \: {?} [/tex]
Answer:
In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain.
Explanation:
this is what i found hope it helps :)
Answer:
Sound is a form of energy which is caused due to the vibration of an object.
Which of the following correctly describes the role of the mouth in the digestive system?
The mouth acts like a muscular bag by churning the food and producing enzymes that aid in chemical digestion.
The mouth produces all of the enzymes needed for digestion and these enzymes are swallowed, which moves them through the digestive tract.
The mouth begins the process of digestion by mechanically breaking food into smaller pieces.
The mouth performs the peristalsis that pushes food through the rest of the digestive system.
Answer:
The mouth begins the process of digestion by mechanically breaking food into smaller pieces.
Explanation:
Digestion is a crucial process that involves the break down of complex food molecules into simpler ones that are assimilable by the body. The process of digestion in humans, for example, is said to begin in the MOUTH where the food enters through.
The mouth via the use of teeth helps the initially break down the food particles using mechanical/physical method. This further helps the break down of the food into tiny particles before they are acted on enzymatically.
How much heat does it take to turn water from -30 degreesC to 120 degreesC?
If you actually know the answer please tell me! ASAP!!!
Answer:
110 degrees C
Explanation:
110 degrees
is your answer
Use the periodic table to identify the element indicated by each electron configuration by typing in the
chemical symbol for the element.
Answer:
Explanation:
1s22s22p6: Ne 1s22s22p63s23p3: P 1s22s22p63s23p64s1: K 1s22s22p63s23p64s23d8: Ni 1s22s22p63s23p64s23d104p65s24d3: Nb
We have that an element indicated by its electron configuration, we can determine its Atomic number by selecting the electron represented on each orbit of the atom around the nucleus
Hence using the Periodic table to read the its Atomic Number
The Periodic table is categorized using the atomic number of elements and symbols are to aid search as well
For an element indicated by its electron configuration we can determine its Atomic number by selecting the electron represented on each orbit of the atom around the nucleus
Hence using the Periodic table to read the its Atomic Number
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