It respresents the higher energy level than 627nm .
<h3>What is a emission line ? </h3>
Emission lines are the glowing hot gas emits lines of light whereas absorption line refers to the tendency of cool atmospheric gas to absorb the same line of light.Some lights produce dark band when the light passes through gas in the atmosphere . There are two line spectrum and absorption.
spectrum is an excitement of electrons from lower to higher energy levels and when it comes back it releases energy in the terms of colourful lights .
It represents the higher energy levels than 627nm because Energy is inversly proportional to wavelength .
to learn more about Emission lines click here
brainly.com/question/28184999
#SPJ9
Answer:
condensation is the answer
Answer:
The answer to your question is: C₄H₁₀O
Explanation:
Data
CxHyOz
mass sample : 1.376 g
mass CO₂ = 3.268 g
mass H₂O = 1.672 g
Process
Reaction
CxHyOz + O₂ ⇒ CO₂ + H₂O
1.- Calculate the moles and mass of carbon
Molecular mass CO₂ = 44g
44 g of CO₂ -------------- 12 g of C
3.268 g of CO₂ -------- x
x = (3.268 x 12) / 44
x = 0.891 g of Carbon
12 g of carbon ----------- 1 mol
0.891 g of C ---------- x
x = (0.891 x 1) / 12
x = 0.0743 moles of carbon
2.- Calculate the moles and mass of hydrogen
18 g of water --------------- 2 g of H
1.672 g of H₂O ------------ x
x = (1.672 x 2) / 18
x = 0.186 g of hydrogen
1 g of hydrogen ------------ 1 mol of H
0.186 g of H ------------ x
x = (0.186 x 1) / 1
x = 0.186 moles of H
3.- Calculate the mass of Oxygen and its moles
Mass of Oxygen = 1.376 - 0.891 - 0.186
= 0.299 g of O₂
Moles of Oxygen
16 g of Oxygen ---------------- 1 mol
0.299 g of O ----------------- x
x = (0.299 x 1) / 16
x = 0.019 moles of Oxygen
4.- Divide by the lowest number of moles
Carbon 0.0743/ 0.019 = 3.9 ≈ 4.0
Hydrogen 0.186/ 0.019 = 9.7 = 10
Oxygen 0.019/ 0.019 = 1
5.- Write the empirical formula
C₄H₁₀O
Gasoline use contributes to air pollution
Gasoline is a toxic and highly flammable liquid. The vapors given off when gasoline evaporates and the substances produced when gasoline is burned (carbon monoxide, nitrogen oxides, particulate matter, and unburned hydrocarbons) contribute to air pollution. Burning gasoline also produces carbon dioxide, a greenhouse gas.
The question is incomplete. Complete question is:
Which list represents the classification of the
elements nitrogen, neon, magnesium, and
silicon, respectively?
(1) metal, metalloid, nonmetal, noble gas
(2) nonmetal, noble gas, metal, metalloid
(3) nonmetal, metalloid, noble gas, metal
(4) noble gas, metal, metalloid, nonmetal
.................................................................................................................
Answer: The correct answer is option 2) nonmetal, noble gas, metal, metalloid
Reason:
1) Non-metal are bad conductors of electricity. Also non-metal are electronegative in nature. Hence, among the provided elements, nitrogen satisfied the criteria. Hence, it is a non-metal.
2) Noble gas are the elements which have completely filled outermost shell. Hence, among the provided elements, Neon satisfied the criteria.
3) Metal are good conductors of electricity. Also metal are electropositive in nature. Hence, among the provided elements, magnesium satisfied the criteria. Hence, it is a metal.
4) Metalloid have conductivity better than non-metals but poor than conductors. Hence, among the provided elements, Silicon satisfied the criteria. Hence, it is a metalloid.
