Answer:
A
Explanation:
because
O2 : H2O
11 : 8
hope this helps:)
The mole to mole ratio of oxygen to water for the chemical equation given is 11:8.
What is a mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass in grams present in one mole of atoms is its atomic mass.
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I need help with science pls help me :(!
What are the six atmospheric conditions that make weather?
what are specatator ions
Answer:
A spectator ion is an ion that does not participate in a chemical reaction and is found in a solution before and after a reaction.
Hope this helped :)
PLZ HELP!!!!!! IN YOUR OWN WORDS PLZ! :D
Imagine your cell phone rings. Describe how the sound gets transmitted from your phone to your ear, and then, from your ear to your brain. In your response, be sure to mention the type of wave that a sound wave is, the medium the sound is transmitted through before it gets to your ear, and what happens in your ear once the sound reaches it.
Answer:
String a piece of twine between the cups. Use a long piece of string to help the sound travel farther. Tie a knot in the end of the string to keep it in the cup. Decorate the cups if desired. One person can hold the phone up to their ear and the other person can talk into the other cup. Keep the string tight or the sound waves won’t travel.
Explanation:
electronic configuration of transition metals
Explanation:
The electron configuration for the first row transition metals consists of 4s and 3d subshells with an argon (noble gas) core. This only applies to the first row transition metals, adjustments will be necessary when writing the electron configuration for the other rows of transition metals.
'The function of an organism as a whole is organ of the combined activities and interaction of the constituent of the cells.' give reason
Answer:
Because organism is made up of organs
organs are made up of tissues
tissues are made up of cells
Therefore interaction of cells give outcome to tissue which further show's results in organs and to organ system and then to the body as a whole
Explanation:
PLS HELP ASAP NO LINKS PLS
Which of the following is the most common source of pollution?
oil
coal
nuclear
gas
Answer:
Coal puts out more Co2 emissions than Oil or Gas and Nuclear energy plants don't put out any pollution.
Explanation:
Even though Coal is your answer it is actually a very clean form of generating energy. Not only is it very clean but it is the most effecient means. Solar and Wind power can't even come close to the production and turnover that Coal, Gas, and Oil can. Wind Turbines are so innefficent that they somtimes don't even pay off what it took to build them in thier lifetime of service. The production of Wind Turbines puts out more pollution than any of the Coal or Natural Gas Plants. Solar power is not very efficent either but it is on it's way. It is also very expensive.
PLZ HELP!
Have you ever heard someone try to speak or make noise underwater? Describe the experience.
IN YOUR OWN WORDS PLZ! :D
Answer:
A few years back I back in 8th grade I head somewhat of a scream underwater, at first I was amazed at the sound but I suddenly realized how physically possible, the only way to make noise under water is to breath in the water and that can drown you, as I heard this I almost immeaditetly bolted out of the water and saw someone either trying to destroy their lungs themselves or being uneducated, they ended up stopping after a bunch of people started staring at them.
Explanation:
What happens to wavelength as wave frequency increases?
Answer:
As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.
Explanation:
How much energy does a photon of frequency 6 x 10^12 Hz have?
A. 2.21 x 19^-42 J
B. 3.98 x 10^-21 J
C. 1.988 x 10^-25 J
D. 1.10 x 10^-46 J
Answer:
B.3.98x10^-21 JExplanation:
#cArryonLeArning
however, when the temperature increases, the solubility of gaseous solutes will _______?
Answer:
Decrease
Explanation:
Since the speed in which the gas molecules are faster as they are heated, they fly around in the container and logically, it is harder to insert a moving object into water than something more stationary or slower.
Help with science!!!!
Answer:
the answe would be (c) temperate continental
Explanation:
1
Explain how adding crushed limestone reduces the acidity of the soil. Include a
general equation for the reaction.
Answer:
If a soil test indicates low magnesium, dolomitic limestone can be used to correct both the nutrient deficiency and pH. The value of limestone is in its ability to neutralize soil acidity. Limestone's properties differ considerably, and these differences influence the limestone's ability to neutralize soil acidity.
Explanation:
HAVE A GOOD DAY
Explain what it means to be considered a “renewable” energy source, and what it means to be a “non-renewable” energy source.
Answer: Resources are characterized as renewable or nonrenewable
- a renewable resource can replenish itself at the rate it is used such as solar energy, wind energy, hydro energy, and tidal energy.
- a nonrenewable resource has a limited supply such as coal, gas, nuclear energy, and fossil fuels.
What type of matter can make solutions?
Answer:
Solutions can be solids dissolved in liquids. When you work with chemistry or even cook in your kitchen, you will usually be dissolving solids into liquids. Solutions can also be gases dissolved in liquids, such as carbonated water. There can also be gases in other gases and liquids in liquids.
Explanation:
Why is it necessary for the triceps to be the contracting muscle when throwing
Explanation:
The triceps contract to allows the arm to extend and flex while throwing
Question 2 Mid-ocean ridges are formed along where two plates diverge under the water. O True O False
Answer:
TrueExplanation:
Which happens when a reversible reaction reaches a state of chemical equilibrium?
A. The system runs out of reactant particles.
B. The concentrations of reactants and products are equal.
C. The activation-energy barrier is eliminated.
D. The rates of forward and reverse reactions are equal.
Help Me Please , I'm hopeless
Answer:
F
Explanation:
What does the respiratory system do?
Answer:
Your lungs are part of the respiratory system, a group of organs and tissues that work together to help you breathe. The respiratory system's main job is to move fresh air into your body while removing waste gases.
Answer:
Supply the body with Oxygen
Explanation:
The respiratory system helps remove waste gases and help you breath
(Your respiratory system consists of your lungs, mouth, and windpipe)
Given the unbalanced equation: Li + N2 -> Li3N When the equation is
correctly balanced using smallest whole numbers, the coefficient of the
Lithium is
A.1
B.2
C.3
D.6
Answer:
D) 6
Explanation:
The balanced equation would be:
6Li + N2 -> 2Li3N
To calculate the atoms of an element in a given molecule, we need to multiply stoichiometry by the number that is written on the foot of that element. Therefore, the correct option is option D.
What is Balanced equation?Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, displacement reaction.
The other characteristic of balanced reaction is that physical state should be written with each compound or molecule on reactant and product side. Physical state should be written in brackets. s means solid, l means liquid, g means gas.
The skeletal equation is
Li + N[tex]_2[/tex] [tex]\rightarrow[/tex] Li[tex]_3[/tex]N
The number of atoms of nitrogen on reactant side is 2 while on product side it is 1 so to balance
Li + N[tex]_2[/tex] [tex]\rightarrow[/tex] 2Li[tex]_3[/tex]N
The lithium atom on reactant side is 1 while on product side it is 6, so to balance
6Li + N[tex]_2[/tex] [tex]\rightarrow[/tex] 2Li[tex]_3[/tex]N
The coefficient of the Lithium is 6.
Therefore, the correct option is option D.
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mixture of same boiling point cannot be separated by using distillation why?
Answer:
both the substances will evaporate
Explanation:
Which of the following best helps explain why an atom of Rb gas more easily loses an electron in a chemical reaction than an atom of Li gas?
Α. Rb has a higher electronegativity than Li has.
B. The Rb atom has a greater number of valence electrons than the Li atom has.
C. The nucleus of the Rb atom has a greater number of protons and neutrons than the nucleus of the Li atom has.
D. In the Rb atom the valence electron is farther from its nucleus than the valence electron of Li is from its nucleus.
Answer:
D
Explanation:
In the Rb atom the valence electron is farther from its nucleus than the valence electron of Li is from its nucleus
Hydrogen chloride gas reacts with water to produce an acidic solution. The equation for
the reaction is shown.
HCI + H2O → CI + H2O
Which statement describes what happens during the reaction?
A The chloride ion is formed by accepting an electron from the water.
B The hydrogen chloride loses an electron to form the chloride ion.
C The water accepts a proton from the hydrogen chloride.
D The water donates a proton to the hydrogen chloride.
neid.
Answer:
C The water accepts a proton from the hydrogen chloride.
Explanation:
The equation given in this question where hydrogen chloride reacts with water is as follows:
HCI + H2O → CI- + H3O+
From this equation, hydrogen chloride (HCl) loses or donates hydrogen ion (H+) or proton to water (H2O), which accepts it to become hydronium ion. Hence, in a nutshell, water (H2O) accepts a proton (H+) from the hydrogen chloride (HCl) in this reaction.
What kind of nuclear reaction occurs in the following reactions?
Answer:
No 1 is fission
while no 2 is fusion
Fission is splitting on nucleus while fusion is forming heavier nucleus with nuclei
The kind of nuclear reaction that occurs in the following reactions are:
i. nuclear fission
ii. nuclear fusion.
What is a nuclear reaction?Nuclear reactions are that reactions in which a nucleus or nuclei collides with subatomic particles to form another, different nucleus. There are two types of collisions. Nuclear fission and nuclear fusion.
Nuclear fission is a process when large nuclei split and create small, numerous nuclei. It happens due to the instability of an atom. It split into two daughter nuclei.
Nuclear fusion is a process in which two or more small nuclei combine to create a large, heavy nucleus. The process releases a large amount of energy or can be absorbed.
Thus, the processes are i. nuclear fission
ii. nuclear fusion.
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A sample of pure water contains
A. a smaller concentration of H3O+ ions than OH- ions.
B. a larger concentration of H3O+ ions than OH- ions.
C. equal concentrations of OH- and H3O+ ions.
D. neither OH- ions nor H3O+ ions.
When C20H42 cracked, each molecule produces one molecule of ethene,
one molecule of butane and two molecules of hydrocarbon E.
What is the molecular formula of E?
A CH13
B C,H14
C CH26
D C4H28
Answer:
D C4H28
Explanation:
f
A fluorinated organic gas in a cylinder is com-
pressed from an initial volume of 930 ml at
156 Pa to 400 mL at the same temperature.
What is the final pressure?
Answer in units of Pa.
Answer:
Final pressure = 362.7 Pa
Explanation:
Given that,
Initial volume, V₁ = 930 ml
Initial pressure P₁ = 156 Pa
Final volume, V₂ = 400 mL
We need to find the final pressure. We know that the relation between volume and pressure is inverse i.e.
[tex]V\propto \dfrac{1}{P}\\\\\dfrac{V_1}{V_2}=\dfrac{P_2}{P_1}\\\\P_2=\dfrac{V_1P_1}{V_2}\\\\P_2=\dfrac{930\times 156}{400}\\\\P_2=362.7\ Pa[/tex]
So, the final pressure is equal to 362.7 Pa.
How many moles of silver would you have if you have 550 g of silver?
Answer:
5.1 mol
Explanation:
Silver's molar mass is 107.8682
550/107.8682=5.09881503539
Or if you round it's = 5.1
Answer:
5.0
Explanation:
https://www.convertunits.com/from/grams+Silver/to/moles
this is what I used, this maybe be useful later.
En qué consistió el experimento de Rutherford?
Answer:
The gold foil experiment
El experimento de la lámina de oro
Explanation: