What part of the isotope notation help you determine the number of electrons within an isotope?
Answers
Related Questions
Which phrase explains how a range of fault-block mountains forms? O A. Shear forces cause large earthquakes to happen often and suddenly O B. Tension affects a wide area of crust and causes many normal faults. C. Eruptions of volcanoes cause many reverse faults to happen slowly D. Compression affects a small area of crust and acts for a long period of time.
Answers
Answer:
the answer is letter b eruptions
Un móvil avanza con mru a razón de 25 m/s durante 2,54 h. Cuál es la distancia recorrida por el móvil
Answers
Answer:
La distancia recorrida por el móvil es 228.600 m
Explanation:
El movimiento rectilíneo uniforme MRU es el movimiento que describe un cuerpo o partícula a través de una línea recta a velocidad constante. Es decir:, en este caso el movimiento es lineal en una única dirección y la velocidad de desplazamiento es constante.
La velocidad es una magnitud física que expresa la relación entre el espacio recorrido por un objeto y el tiempo empleado para ello mediante la expresión:
[tex]velocidad=\frac{distancia}{tiempo}[/tex]
En este caso:
velocidad= 25 m/sdistancia= ?tiempo= 2,54 h= 9144 s (siendo 1 h= 3600 s)Reemplazando:
[tex]25 \frac{m}{s} =\frac{distancia}{9144 s}[/tex]
y resolviendo obtienes:
distancia= 25[tex]\frac{m}{s}[/tex] *9144 s
distancia= 228.600 m
La distancia recorrida por el móvil es 228.600 m
A movement is rectilinear uniform when an "object" (for example) travels in a straight path at a constant speed, given that its acceleration is zero.
To start solving an exercise, we obtain the data:Velocity (v) = 25m/s
Distance (d) = ?
Time (t) = 2.54hr = 9,144 s
Looking at the data, we see that the time is in hr, but we need it in seconds. Therefore we do a conversion from hours to minutes, taking into account that 1 hour is equal to 3600 seconds.
2,54 hr * (3600 sec / 1 h ) = 9144 secTo calculate the distance traveled by the mobile, the speed is multiplied by the time taken.
For this the following formula is applied:
d = v * tWe apply the data in the formula; to solve for the distance.
d = 25 m/s * 9144 sd = 228, 600 mAnswer: The distance traveled by the mobile is 228,600 meters.
Where does the sunlight energy enter from during photosynthesis?
Answers
Answer
Through the leaves
Explanation:
What is the molar mass C₆H₁₂O₆
Answers
Answer:
molar mass= 180
Explanation:
molar mass = (6×12) + (12×1) + (6×16) = 180
Why is light colour given off?
Answers
Answer:
Light is made up of wavelengths of light, and each wavelength is a particular colour. The colour we see is a result of which wavelengths are reflected back to our eyes. The visible spectrum showing the wavelengths of each of the component colours.
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1) How many radial seconds are in 80 degree angle?
Answers
Answer:
288000 sec
Explanation:
scale of 1 to 10 how pretty is this image
Answers
Answer: 10 always love yourself
Explanation:
When ethane (C2H6) burns, it produces carbon dioxide and water:
2C2H6(g)+7O2(g)→4CO2(g)+6H2O(l)
How many moles of water will be produced when 3 moles of ethane are burned?
3 moles
6 moles
9 moles
12 moles
Answers
Answer:
6 moles
Explanation:
According to stoichiometry and given chemical equation 2C₂H₆(g)+7O₂(g)→4CO₂(g)+6H₂O(l), 9 moles of water are produced when 3 moles of ethane are burned.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is important while balancing chemical equations.
In the given problem , as 2 moles of ethane produce 6 moles of water so according to stoichiometry
∴ 3 moles of ethane will produce 3×6/2=9 moles
Thus, 9 moles of water are produced when 3 moles of ethane are burned.
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what is a substance combination of different atoms?
Answers
Answer:
Brainliest-
Explanation:
A substance joined by this type of bond shares electrons
Answers
Answer: Covalent
Explanation:
A covalent compound is formed when an element shares its valence electron with another element. This compound is formed between two non metals. Example: [tex]HF[/tex]
An ionic compound is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element or the metal and the element which accepts the electrons is known as electronegative element or non metal. Example: [tex]NaCl[/tex]
20 points
Which of the following objects below is NOT needed to test electrical conductivity?
battery
object powered by electricity
insulated wire
electrical tape
Answers
Answer:
I`m pretty sure it`s electrical tape.
Explanation:
The objects which does not conduct electricity are called insulators which are not needed to test electrical conductivity. Hence, insulated wire is the correct option.
What is conductivity ?Conductivity of a substance is the ability to conduct electrically or thermally through the substance. Based on their conductivity, there are three classes of materials conductors, semiconductors and insulators.
Conductors are materials conducting heat and electricity at all temperatures. Semiconductors conduct only at higher temperature or on doping. Insulators are material does not conduct at any condition.
Metals are good conductors. Silicon , germanium etc. are semiconductors. Whereas, wood, plastic etc. are insulators they does not allow flow of electrons through it. Therefore, an insulated wire is not needed to test conductivity.
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which of the following has a mass of 10.0g
Answers
Answer: 0.119 mole of Kr has a mass of 10.0 g
Explanation:
The complete Question was ontained online, albeit, it was incomplete, even from the online source. But the solution is possible based on the part of the question obtained.
Complete Question
Which of the following Noble Gases has a mass of 10.0 g?
A. 2.02 mol Ne B. 0.119 mol Kr C.
Solution
Number of moles = (Mass)/(Molar Mass)
Mass = (Number of moles) × (Molar mass)
Checking the options, one at a time,
A. 2.02 moles of Neon
Number of moles = 2.02 moles
Molar Mass of Neon = 20.1797 g/mol
Mass = 2.02 × 20.1797 = 40.762994 g ≠ 10.0 g
Not the answer.
B. 0.119 moles of Krypton
Number of moles = 0.119 moles
Molar Mass of Krypton = 83.798 g/mol
Mass = 0.119 × 83.798 = 9.971962 g ≈ 10.
Explanation:
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what do we call the liquid that the solid Is being added to?
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Answer:
When a solid dissolves the solid and the liquid they form a mixture called a solution.
A substance joined by this type of bond has a low melting point
Answers
Answer:covalent bonds
Explanation:
Which part(s) of a microscope forms an enlarged image of a specimens?
A: The light source
B: The focus knobs
C: The stage
D: The objective lenses
Answers
The objective lens magnifies the specimen to produce a real image that is projected to the ocular. This real image is magnified by the ocular lens to produce the virtual image seen by your eye.
2B + 3H2 2BH3
How many moles of BH3 are synthesized when 27.0 moles of H2 completely react?
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Answer: 18.0 moles of [tex]BH_3[/tex] will be produced when 27.0 moles of [tex]H_2[/tex] completely react.
Explanation:
The balanced chemical equation is:
[tex]2B+3H_2\rightarrow 2BH_3[/tex]
According to stoichiometry :
3 moles of [tex]H_2[/tex] produce = 2 moles of [tex]BH_3[/tex]
Thus 27.0 moles of [tex]H_2[/tex] will produce=[tex]\frac{2}{3}\times 27.0=18.0 moles[/tex] of [tex]BH_3[/tex]
Thus 18.0 moles of [tex]BH_3[/tex] will be produced when 27.0 moles of [tex]H_2[/tex] completely react.
Chemical energy is contained in the chemical bonds of a substance. True or False
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What is a atmosphere
Answers
hi can you help me with these questions please
Molecular masses
1. CaCo3 (calcium carbon)
2. C6H12O6 (glucose)
3. Fe2O2 (iron oxide 11)
Avogadro's number
1. A sample of iron is known to contain 2.35 mol of Fe. How many iron atoms are there in the sample?
2. how many molecules are present in 150 grams of sulfuric acid (H2SO4)
Molar volume
1. What volume will 110g of dichloro (CI2) occupy when under normal conditions? 2. If you have 600g of CO2 gas and knowing that its molecular mass is 44g / mol, find
a) the number of moles
b) the number of molecules
c) the volume it occupies under normal conditions of pressure and temperature.
Answers
Answer:
iron oxide11
Explanation:
iron oxide is the chemical compound with formula fe304. it occurs in nature as the mineral magnetite.
What type of mixture is salad dressing please tell me? Tysm!
Answers
Answer:
Salad dressing made with oil vinegar, and herb is a homogeneous mixtures. Because heterogeneus mixture is composed of two or more components which are unequal distributed.
But in normal salad it's heterogeneous
Organisms that are made up of prokaryotic cells are NOT ____________.
Question 3 options:
Bacteria
Multicellular
Simpler than organisms made up of Eukaryotic celled organisms
All of these are true about prokaryotic cells
Answers
Answer:
Multicellular
Explanation:
Prokaryotic cells are unicellular because the do not have a nucleus and lack organelles, while eukaryotic cells do have a nucleus, have organelles, and are are multicellular. :)
Organisms that are made up of prokaryotic cells are NOT
Multicellular.
Classification of Organisms based on cellular organisation.Living organisms can be classified based on their cellular organisation.
Organisms that are made up of one cell are known as unicellular organisms.
Organisms that are made up of more than one cell are known as multicellular organisms.
A prokaryote is an organism that lacks distinct nucleus while eukaryote is an organism that possess a nucleus that is enclosed in a nuclear envelope.
While prokaryotes are always unicellular organisms, eukaryotes can be either unicellular or multicellular.
Therefore, organisms that are made up of prokaryotic cells are not multicellular.
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1. (06.01 LC)
Based on the kinetic theory, which statement is true? (15 points)
A. The particles of matter are stationary.
B. Matter is composed of very small particles.
C. Matter is made up of only charged particles.
D. The particles of matter have zero kinetic energy.
Answers
Answer:
B. Matter is composed of very small particles.
Explanation:
All matter is composed of extremely small particles called atoms. All atoms of a given element are identical in size, mass,
The statement is true based on the kinetic theory is that; "matter is composed of very small particles.".
Kinetic theory of matter
The kinetic theory of matter holds that the particles that compose matter are in constant random motion. In this theory, all matter is composed of molecules.
Now, the statement is true based on the kinetic theory is that; "matter is composed of very small particles.".
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How many moles are in 5.60 x 1027 molecules of carbon monoxide? with a bridge Please answer quickly I have to turn it in soon
Answers
Answer:
9302 moles of CO contain 5.60×10²⁷ molecules
Explanation:
We solve this with Avogadro's number.
NA = 6.02×10²³
This number states the how many particles are in 1 mol of anything.
1 mol of atoms contains 6.02×10²³ atoms
1 mol of molecules contains 6.02×10²³ molecules.
We apply a rule of three:
6.02×10²³ molecules are contained in 1 mol of CO
Then, 5.60×10²⁷ molecules may be contained in (5.60×10²⁷ . 1) / 6.02×10²³
= 9302 moles
Balance this equation. Not all spots have to have a number.
____Na(s) + ____H2O(g) → ____NaOH(s) + ____H2 (g)
Answers
2Na+2H2O----2NaOH+H2
write any three reason for the profuse use of plastic . although it is harmful .
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(2)The "use" of plastics is not harmful per se, and plastics themselves are innocuous (one reason that they fail to readily biodegrade is that they do not interact with biological systems). But poor manangement of waste plastic can lead to problems.
(3)Failing to recycle and reuse synthetic polymers can lead to those items not landfilled (which is a separate issue - ultimately we would run out of landfill sites) items ending up in the sea, rivers or in the general environment where they can be hazardous to wildlife, and look unsightly.
But that is down to poor management, and societal attitudes, not down to the fact that the items are made of plastics.
(4)If we failed to manage sewage and simply discharged that into the streets or into rivers that would be a major problem too. But that doesn't mean we should "ban sewage" - just manage it in an effective way.
What is the relationship between the density and position of each Earth layer?
Answers
Answer:
The atmosphere and Earth's interior are layered by density. Gravity pulls more strongly on denser materials so denser materials are at the center of things. Earth's core, at its center, is denser than its crust. The lowest layer of the atmosphere is denser than the upper layer.
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Answer:
Gravity pulls more strongly on denser materials so denser materials are at the center of things.
Explanation:
Earths core at its center is denser than its crust the lowest layer of the atmosphere is denser than the upper layer
Which gas is a greenhouse gas?
Argon
Methane
Nitrogen
Oxygen
Answers
Answer:
The answer is Methane
Hope it helped
Answer:
Methane
Explaination:
The main greenhouse gases are:
Water vapor.
Carbon dioxide.
Methane.
Ozone.
Nitrous oxide.
Chlorofluorocarbons.
what is the mass in kilograms of 25L of hydrophosphoric acid?
Answers
Answer:
0.0345kg is the mass of 25L of the sample
Explanation:
Hydrophosphoric acid, H₃P = Phosphine has a density of 1.38g/L.
To solve this question we need to convert the volume of the gas to mass in grams as first and then to kilograms as follows:
Mass in grams:
25L * (1.38g / L) = 34.5g
Mass in kilograms:
34.5g * (1kg / 1000g) = 0.0345kg is the mass of 25L of the sample
Helpthe last option is class M
Answers
I think hopefully
Answer:
Class M
Explanation:
can someone help me please-
i just need some answers-
Answers
Answer:
1.Newton's first law is often called the law of inertia.
2.Newton's second law of motion is F = ma
3.An object not wanting to change its speed or direction
4.a bike would have more acceleration
5.it doesn't have auto brakes and its lighter than a motorcycle
6. Second law
7. First law
8. First law
9. Second law
10. First law
Those should be right!