Answer:
no it's not if you wanna know different types of answer then you should ask answer of questions you already know about. it increases your knowledge
Which of the following statements BEST describes the interaction of a longitudinal sound wave and matter?
A. Sound waves can transfer energy only through open space or a vacuum.
B. Sound waves can travel through a vacuum and are slowed down by matter.
C.Sound waves transfer energy by carrying matter perpendicular to the direction of the wave.
D. Sound waves transfer energy from particle to particle in the matter, but the matter is not carried along with the wave.
Answer:
D
Explanation:
Only some types of waves can move through a vacuum and soundwaves ar not one of them.
Sound waves do not carry matter.
But soundwaves do transfer energy through particles and as I just said, they do not carry matter.
Sound waves convey energy from one particle to the next in matter, but they do not carry the matter with them.
Option D. is correct.
What is longitudinal sound wave?Longitudinal waves are created in which the individual fluid is flowing move in a direction that's also parallel to the energy transfer direction.
The vibrations of such particles in a sound wave flowing through air are better expressed as longitudinal vibrations.
Sound waves convey energy from one particle to the next in matter, but they do not carry the matter with them.
Option D. is correct.
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which one of the following are not steps of a balanced equation?
Answer:
Dealing with the states of both the reactant and product elements
What happens in radioactive decay to the atom
Answer:
When radioactive atoms decay, they release energy in the form of ionizing radiation (alpha particles, beta particles and/or gamma rays). The energy is called ionizing radiation because it has enough energy to knock tightly bound electrons from an atom's orbit. This causes the atom to become a charged ion
Collin uses balloons to investigate static electricity. Which of the following BEST
explains what will happen when he brings one negatively charged balloon next to a
positively charged balloon?
Answer:
The positive and negative electrons (or protons, don't really know) are opposites, so they attract each other, giving a whole new meaning to "Opposites attract."
Explanation:
Hi, am I hot??
Please tell me I’m hot.
Answer:
you hot A S F
Explanation:
Ecosystem diversity, species diversity, genetic diversity all intertwine to create ____________.
A. Vulnerability
B. Biodiversity
C. Interdependence
D. Recycling
“Science”
Answer:
B
Explanation:
Biodiversity matches up with the themes of 'ecosystem diversity, species diversity, genetic diversity'
2H2 + O2 → 2H2O
"PLEASE HELP ASAP"
Which of the following statements would be correct if one mole of hydrogen was used in this reaction? (5 points)
One mole of oxygen was used in this reaction.
Two moles of oxygen were used in this reaction.
One mole of water was produced from this reaction.
Two moles of water were produced from this reaction.
Answer:
- One mole of oxygen was used in this reaction.
- Two moles of water were produced from this reaction.
Explanation:
In addition: - Two moles of hydrogen were used.
Given the data from the question, the correct statement is:
One mole of water, H₂O was produced from the reaction Basic conceptTo know which options are correct, we shall determine the number of mole of O₂ used and the number of mole of H₂O produced.
How to determine the mole of O₂ usedBalanced equation
2H₂ + O₂ —> 2H₂O
From the balanced equation above,
2 moles of H₂ required 1 mole of O₂
Therefore,
1 mole of H₂ will require = 1 / 2 = 0.5 mole of O₂
Thus, 0.5 mole of O₂ is needed for the reaction
How to determine the mole of H₂O producedFrom the balanced equation above,
2 moles of H₂ reacted to produce 2 moles of H₂O
Therefore,
1 mole of H₂ will also react to to produce 1 mole of H₂O
Thus, 1 mole of H₂O was produced from the reaction.
SUMMARY
When 1 mole of H₂ was used in the reaction,
0.5 mole of O₂ was used 1 mole of H₂O was producedConsidering the options given in the question above, the correct statement is:
1 mole of H₂O was producedLearn more about stoichiometry:
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How does changing frequency and wavelength affect how you hear sound?
Answer:
wavelength is inversely proportional to frequency.
frequency determines pitch of sound.
we hear sound differently.
when the wavelength or distance is short we Hear high sound .
when the wavelength or distance is high we Hear low sound .
Balance the Equation
Fe
+
HF
FeFz
+ H2
why do nails put in boiled water not rust
Answer:
boiling water has no oxygen
Explanation:
you need water and oxygen for something to rust.
Answer:
because there isn't no oxygen which causes them to rust.
Explanation:
explain why zn reacts more slowly with dilute hydrochloric acid then with concentrated hydrochloric acid
Answer:
When the concentration is higher, more hydrogen ions are near the Zn atoms at any given time. This allows for more Zn atoms to be ionized and dissolved into the solution per second.
Explanation:
How much heat energy is needed to raise the temperature of a 150g sample of water from 283 Kto 349 Kif water has a Cp value of 4.18 J/g*K.
Conservation of matter means that:
55
Matter is never created nor destroyed.
Matter is always created and destroyed.
Matter always turns into energy
Matter is flexible, it can be created destroyed, or turned into energy
Answer:
Matter is never created or destroyed
Select ALL the compounds that would be classified as an acid:
HCI
H20
HC2H302
NaCl
KOH
Mg(OH)2
Answer:
option A,B,C
Explanation:
HCl
H2O
HC2H3O2
In the list given , following substance are classified as Acid:
HCl , HC₂H₃O₂ .
What is an Acid ?
A substance that can donate a proton or accept an electron pair to form a bond is called an Acid.
An acid turns Litmus paper red and has pH < 7 , It has the property of neutralizing alkali.
It has sour taste and can dissolve metals.
HCl is a strong acid , H₂O is neutral , HC₂H₃O₂ (Acetic acid) is a weak acid , NaCl is Salt , KOH and Mg(OH)₂ are strong base.
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We can preserve natural resources by
А
drilling for as much oil as possible for just 10 years
B
using mostly trees for energy
с
relying on renewable energy sources
D
burning more fossil fuels
Answer:
drilling for as much oil as possible for just 10 yearsExplanation:
When nutrients, water, and materials cross a cell membrane without requiring energy from the cell, the process is called
A: Active Transport
B: homeostasis
C: Selective Permeability
D: Diffusion
How heavy is 5 moles of silver in grams?
Answer:
The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Silver, or 107.8682 grams.
Explanation:
I took a test about this :)
HELP ME PLSSS:(((
Question 8 of 10
What is area?
A. The substance of an object
B. A unit of measurement
C. The size of an angle
D. How much space a flat shape covers
SUBMIT
Answer:
D
Explanation:
The area of a shape is the amount of space a 2-dimensional shape covers. It's measured in units squared (units²). So, the answer is D.
What is a cell? Please help
Explanation:
A cell is the membrane unit that contains all the fundamental molecules to living life. To make it short nd easy, a cell is the smallest nd basic unit of life, it's responsible for all life's processes. The human body is comped of m(tr)illions of cells, they all each provide different types of functions.
help please!!!!
Which of the following models BEST represents how the nucleus of an atom changes as a result of nuclear fusion?
Answer:
C is the answer
Among the following, model D best represents how the nucleus of an atom changes as a result of nuclear fusion.
What is an atom?
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
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The molecules of a substance formed a rigid repeating crystal structure. Then, a phase change occurred. That structure is now more like clusters of molecules moving past one another. What phase change caused this change? Plz, explain your answer.
A
condensing
B
evaporating
C
freezing
D
melting
Answer: everybody report fNnasks he doesn't answer nobody question if you see it like you told me do it yourself science is super easy
Explanation:
What is the molar mass of lead nitrate (Pb(NO3)2) from the equation below?
2Pb(NO3)2(s) -> 2PbO(s) + 4NO2(g) + O2(g)
A.
269 g
B.
331 g
C.
662 g
D.
283 g
Answer:
331.2 g/molExplanation:
The molar mass of lead nitrate (Pb(NO₃)₂) is 331 g. Therefore, option B is correct.
The atomic mass of lead (Pb) is 207.2 grams per mole.
The atomic mass of nitrogen (N) is 14.0 grams per mole.
The atomic mass of oxygen (O) is 16.0 grams per mole.
In lead nitrate, 2 nitrate ions (NO₃), so multiply the atomic mass of nitrogen by 2 and the atomic mass of oxygen by 6 (since there are 3 oxygen atoms in each nitrate ion):
2(N) + 6(O) = 2(14.0 g) + 6(16.0 g)
= 28.0 g + 96.0 g
= 124.0 g
Pb(NO₃)₂ = 207.2 + 2(14.01 + 3(16.00))
= 207.2 + 2(14.01 + 48.00)
= 207.2 + 2(14.01 + 48.00)
= 207.2 + 2(62.01)
= 207.2 + 124.02
= 331 g
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what is the name of the energy needed to change the structure of matter
Answer:
Heat fusion
Explanation:
The energy required to change a solid to a liquid is called the heat of fusion.
Which of the following prefixes would show up in the name for SF6? Hexa, penta, tetra, hepta, and mono
Answer:
Sulfur hexafluoride
Explanation:
adding sugar to your tea physical or chemical change
Answer:
physical
Explanation:
no chemical reaction occurs
Answer:
the answer is physical change :)
plz help me get it right no links
Answer:
D
Explanation:
earth orbits the sun. the sun doesn’t orbit around earth. and moon take 27 days around the earth
According to his prelaboratory theoretical yield calculations, a student's experiment should have produced 1.44g of magnesium oxide. When he weighed his product only 1.23g of magnesium oxide was present. What is the student percent yield?
The percent yield of the product formed in the experiment is 85.41%.
What is percent yield?Percent yield is defined as the ratio of actual yield to the theoretical yield multiplied by 100. If the actual and theoretical yield are same then the percent yield is 100%.If actual yield is less than the theoretical yield then the percent yield is less than 100%.Reason of this condition arising is the incompletion of reaction or loss of sample during recovery process.
In cases where percent yield is over 100% it indicates that more sample is recovered than the predicted amount.This condition arises when there are other simultaneous reactions taking place leading to the formation of product. It can also arise if there is incomplete removal of impurities from the sample .
In the given example, actual yield=1.23 g and theoretical yield=1.44 g
Thus on substituting values in the given formula, 1.23/1.44×100=85.41 %.
Thus , the percent yield of sample is 85.41%.
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What is the water vapor density maximum at 30 ᵒC? *
1.5 mol/1000 L
1.7 mol/1000 L
30 mol/1000 L
2.3 mol/1000 L
2.3 mol/1000L
Explanation:
relative humidity (rh)is the ratio of the partial pressure of water at a given temprature
Carbon, C has 6 valence electrons. H has 1 valence electrons so in total how much does carbons and hydrogen have together?
Explanation:
but carbon has four Valence Electrons
|
Describe an important
water resource problem or
problems that can be
addressed using your
research topic.
Answer:There are following reasons:
About 50% fresh water goes waste due to runoff.
More than 1 billion people lack clean drinking water globally.
Population increase is much faster than the increase in the amount of available fresh water.
Per capita availability of fresh water will further decrease in the coming years.
Explanation: PLZ mark Brainlist