The element Ar classified as noble gas in the periodic table. Therefore, the correct option is option A.
What is noble gas?The noble gases are a group of chemical elements that share several characteristics. They are all monatomic, odourless, and colourless gases with relatively little chemical reactivity under normal conditions. Oganesson (Og) is a highly radioactive element created synthetically.
Although the IUPAC has included oganesson since "group 18" and "noble gas" have been used interchangeably, oganesson may not be appreciably chemically noble and therefore is projected to deviate from the norm and just be reactive owing to relativistic effects. Its chemistry is still being studied due to the exceptionally short 0.7 ms ½ of its sole known isotope. The element Ar classified as noble gas in the periodic table.
Therefore, the correct option is option A.
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pls help 40 points!! Augie created this chart about the two kinds of waves.
A 2-column table with 3 rows titled 2 Kinds of Waves. The first column labeled Title 1 has entries the transfer energy is perpendicular to the direction of the wave motion, particles move up and down, particles move only slightly. The second column labeled Title 2 has entries the transfer direction is parallel to the direction of wave motion, particles move side to side, particles move only slightly.
Which best labels the chart?
Title 1 is “Longitudinal Waves,” and Title 2 is “Transverse Waves.”
Title 1 is “Transverse Waves,” and T
its b
i did the quiz and got it right it is b
Answer:
b
Explanation:
took test on edge
Why does the Sun gravitationally dominate all other objects in the Solar System?
Two ways water and ice are the same
Answer:
1- water is ice
2- ice is water
Explanation:
1- the water is just froze
2- the ice is just solid water
When two hydrogen atoms combine with one oxygen atom, what is the result?
A. solution
B. compound
C. mixture
D. none of the above
If 4.25 grams of copper were plated out in the reaction:
3Cu2+ + 2Al ---> 3Cu + 2Al3+
What mass of aluminum would have dissolved?
Please show all work!
Answer:
gravwfewtu
Explanation:
ushifelllf
The common name for butanone, a readily available solvent, is
Answer:
methyl ethyl ketone
Explanation:
(MEK)
A mixture of hydrocarbons contains 34.8% heptane, C7H16, 10.1% nonane, C9H20, and 55.1% octane, C8H18. The mixture is combusted in an excess of oxygen. What mass of CO2 is generated from the combustion of 17.0 kg
of the mixture?
:
Mass Heptane : 0.348 x 17 = 5.916 kg
mass C in Heptane (MW=100.21 g/mol) :
[tex]\tt \dfrac{7.12}{100.21}\times 5.916=4.959~kg[/tex]
Mass Nonane : 0.101 x 17 = 1.717 kg
mass C in Nonane (MW=128.2 g/mol) :
[tex]\tt \dfrac{9.12}{128.2}\times 1.717=1.446~kg[/tex]
Mass Octane : 0.551 x 17 = 9.367 kg
mass C in Otane (MW=114.23 g/mol) :
[tex]\tt \dfrac{8.12}{114.23}\times 9.367=7.872~kg[/tex]
Total mass produced :
4.959+1.446+7.872=14.277 kg
The branch of science which deals with chemicals is called chemistry.
The correct answer is 14.277 kg
The calculation part is as follows:-
Mass Heptane : [tex]0.348 * 17 = 5.916 kg[/tex] Mass C in Heptane (MW=100.21 g/mol) :[tex]\frac{7.12}{100.21} *5.916 = 4.959kg[/tex]
Mass Nonane : [tex]0.101 * 17 = 1.717 kg[/tex] Mass C in Nonane (MW=128.2 g/mol) :
[tex]\frac{9.12}{128.2} *1.717 =1.446kg[/tex]
Mass Octane : [tex]0.551 * 17 = 9.367 kg[/tex] Mass C in Otane (MW=114.23 g/mol) :
[tex]\frac{8.12}{114.23}*7.872 kg[/tex]
Total mass-produced is
[tex]4.959+1.446+7.872=14.277 kg[/tex]
Hence, the correct answer is - 14.277kg.
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Match the part of the wave to its description.
Crest
Wavelength
Trough
Amplitude
These are the correct answer your welcome ;)
Answer:
sgsgueiehéyegeysuegeteue2
Answer:
Explanation:
The answers you put are correct...
crest- A crest point on a wave is the maximum value of upward displacement within a cycle. A crest is a point on a surface wave where the displacement of the medium is at a maximum.
wavelength- In physics, the wavelength is the spatial period of a periodic wave the distance over which the wave's shape repeats. (how long the wave is)
trough- A trough is the opposite of a crest, so the minimum or lowest point in a cycle.
amplitude- Amplitude, in physics, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path. ... Waves are generated by vibrating sources, their amplitude being proportional to the amplitude of the source.
Hope this helps! Have a great day!! :D
Car battery energy that makes device work
Answer:
No it's not make device work
Explanation:
I think soo
Carbon-14 has a half-life of 5715 years. It is used to determine the age of
ancient objects. If a sample today contains 0.060 mg of carbon-14, how much
carbon-14 will be present after 28,575?
The sample of Carbon-14 after 28,575 years=0.001875 mg
Further explanationGeneral formulas used in decay:
[tex]\large{\boxed{\bold{N_t=N_0(\dfrac{1}{2})^{T/t\frac{1}{2} }}}[/tex]
T = duration of decay
t 1/2 = half-life
N₀ = the number of initial radioactive atoms
Nt = the number of radioactive atoms left after decaying during T time
Carbon-14 has a half-life of 5715 years, so t1/2=5715 years
A sample today contains 0.060 mg of carbon-14, so No=0.06 mg, then :
[tex]\tt Nt=0.06(\dfrac{1}{2})^{28575/5715}\\\\Nt=0.06(\dfrac{1}{2})^5\\\\Nt=0.001875~mg[/tex]
How many atoms are in 39.2 g of calcium?
a) 6.022 x 10^23 aoms
b) 235.2 x 10^23 atoms
c) 5.89 x 10^23 atoms
d) 40.08 x 10^23 atoms
Answer:
5.89× 10²³ atoms of Ca
Explanation:
Given data:
Mass of Ca = 39.2 g
Number of atoms = ?
Solution:
Number of moles of Ca:
Number of moles = mass/molar mass
Number of moles = 39.2 g/40.078 g/mol
Number of moles = 0.978 mol
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
0.978 mol × 6.022 × 10²³ atoms / 1 mol
5.89× 10²³ atoms of Ca
Which of the following is a simple definition of reduction?
A. the loss of electrons
B. the gain of electrons
C. an agent that oxidizes something
D. an agent that reduces something
The answer is B on Edg 2020
Answer:
B. the gain of electrons
Explanation:
An easy way to remember this concept is the pneumonic OIL RIG:
Oxidation is Loss (of electrons)
Reduction is Gain (of electrons)
1.Outline the results of the Cathode ray tube?
Answer:
this showed that the cathode rays traveled in straight line
How many moles of nitrogen gas would be produced if 3.27 moles of copper(II) oxide were reacted with excess ammonia in the following chemical reaction? 2 NH3(g) + 3 CuO (s) – 3 Cu(s) + N2(g) + 3 H2O(g)
Moles of Nitrogen(N₂) gas would be produced : 1.09
Further explanationThe reaction coefficient in a chemical equation shows the mole ratio of the components of the reactants and products
If one mole of the reactant or product is known, then we can determine the moles of the other compounds involved in the reaction
Reaction
2NH₃(g) + 3CuO (s) ⇒ 3Cu(s) + N₂(g) + 3 H₂O(g)
Copper(II) oxide was reacted with excess Ammonia, so CuO as a limiting reactant and moles of the product is based on moles of CuO
moles of CuO = 3.27
From the equation, the mol ratio of CuO : mol N₂ = 3 : 1, so mol N₂ :
[tex]\tt \dfrac{1}{3}\times 3.27=1.09[/tex]
What percentage of Canada's 2005 population was between the ages of 30 and 44?
Silver nitrate and magnesium chloride react according to the following equation:
2AgNO3(aq) + MgCl2(aq) — 2AgCl(s) + Mg(NO3)2(aq)
What volume (in ml) of 0.247M MgCl2(aq) is required to react with 63.2 mL of 0.192M AgNO3(aq)?
Answer:
V=24,3mL
Explanation:
1)n(AgNO3)=Cm*V=0.063l*0.192M=0.012
2)n(AgNO3)/2=n(MgCl2) => MgCl2=0.012/2=0.006
3)V(MgCl2)=n/Cm=0.006/0.247=0.0243L=24,3ml
How much heat is required to boil 78.5 gg of water at its boiling point?
Answer:
206 kj of heat is required to boil 78.5 kg of water at its boiling point