2. How many grams of methane must be burned to produce 2.05 grams of water in the complete combustion reaction?
The unbalanced equation for the reaction is: _CH418) + _ 0218) ►_CO2(8) +_ H2O(8)
Answers
Answer:
0.88 g
Explanation:
The balanced reaction equation is;
CH4(g) + 2O2(g) ----------> CO2(g) + 2H2O(l)
Number of moles in 2.05g of water = 2.05g/18g/mol = 0.11 moles
If 1 mole of CH4 yields 2 moles of water
x moles of CH4 yields 0.11 moles of water
2x = 0.11
x = 0.11/2
x= 0.055 moles
Molar mass of methane = 16 g/mol
Mass of methane = 16 g/mol * 0.055 moles
Mass of methane =0.88 g
Related Questions
which is the SI unit used to measure the temperature of a substance
Answers
Answer:
Kelvin
Explanation:
Answer:
Kelvin
Explanation:
Which of the following is NOT an example of a change of state? *
HELP PLSSSSSS
Plants using photosynthesis to produce food.
Liquid water in perspiration changes to a gas when it evaporates.
An ice cream cone melts, forming a liquid.
Answers
Answer:
Plants using photosynthesis to produce food.
Answer:
the icecream one is not an example
what is 54-34+87x56
How is everyone on this beautiful day?
Also if u need to hear that someone loves u i do even if i don't know u
Answers
Answer:
5,992
Explanation:
and thank you! ♥
6.022 x 10^23 atoms of calcium.
What is the mass?
Answers
Answer:
(6.02214179×1023) / one mole of substance. How many atoms are in a 3.0 g sample of sodium (Na)?
Explanation:
Answer:
Explanation:
Mass is 1.000
What is the molar mass of CO
Answers
Question:
→What is the molar mass of CO
Answer:
→28.01 g/mol
Which of the following reactions is single replacement?
Answers
A large piece of iron was reacted with an acid. What would happen to the rate of the reaction had the large piece been finely divided into smaller pieces? (1 point)
It will decrease because the reactant particles are moved farther apart.
It will increase because the reactant particles are brought closer together.
It will decrease because larger particles provide more surface area to react.
It will increase because smaller particles provide more surface area to react.
Answers
Answer:
D: It will increase because smaller particles provide more surface area to react.
Explanation:
When the large iron is broken up into smaller pieces, there are more places for the iron to react (meaning there's more surface area). Think of it like taking the surface area of a big cube compared to the surface area of a bunch of small cubes. The sum of the surface areas of the small cubes will be greater than that of the large cube. As a result, more places for the iron to react will cause for a greater reaction.
Answer: D It will increase because smaller particles provide more surface area to react.
Work = Force X Distance A dog pulls a ball with 5N of force for 4 m. How
much work did the dog do?*
Answers
Answer:
W = 20 J
Explanation:
Given that,
The force acting on the dog, F = 5 N
Distance covered, d = 4 m
We need to find the work done by the dog. The work done by an object is given by :
W = Fd
Put all the values,
W = 5 N × 4 m
W = 20 J
So, 20 J of work is done by the dog.
11. How many elements do all the "P" orbital span (go across) in each period? (circle your answer)
a) 2
b) 6
c) 10
d) 14
Answers
Answer: B
can u pls give me brain list?
How many atoms for each element in this compound:
Pb3(PO4)2
Pb =
P=
O=
Answers
Answer:
In the compound Pb3(PO4)2, there are 3 Pb atoms, 2 P atoms, and 8 O atoms.
Let me know if this helps!
There are 3 atoms of pb(Lead), 2 atoms of P(Phosphorus) and 8 atoms of O(Oxygen) are present in Pb3(PO4)2.
What is an atoms?An atom is the smallest constituents of matter that can neither be created nor be destroyed.An atom It consists of a central nucleus, usually surrounded by electrons. Each electron is negatively charged. The nucleus is positively charged, and contains relatively heavy particles known as protons and neutrons.What are Compounds?
A compound is a combination of atoms of same or different types of an element in a fixed ratio.
In the given question Pb3(PO4)2 is a compound of lead phosphate which is made up of 3 atoms of pb(Lead), 2 atoms of P(Phosphorus) and 8 atoms of O(Oxygen).
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Which of the following elements has the lowest normal boiling point? 4 points A. Ne B. He C. Ar D. Kr
Answers
Answer:
B. He
Explanation:
Vacuum-packaging food is an effective means for stopping the growth of bacteria.
true or false
Answers
Answer:
True
Explanation:
Vacuum packing is a method of packaging that removes air from the package before sealing. ... On a more short-term basis, vacuum packing can also be used to store fresh foods, such as vegetables, meats, and liquids, because it inhibits bacterial growth. Vacuum packing greatly reduces the bulk of non-food items.
YOU DO:
1) What volume of 0.25M lithium fluoride solution can be made by dissolving 5.0 g lithium fluoride, LiF?
Answers
Answer:
0.7712 L
Explanation:
Molarity = 0.25M
Volume = ?
Mass = 5.0 g
The relationship between these quantities is given as;
Molarity = Number of moles / Volume
Volume = Number of moles / Molarity
Number of moles = Mass / Molar mass
Molar mass of LiF = 25.939 g/mol
Number of moles = 5 / 25.939 = 0.1928 mol
Volume = 0.1928 / 0.25 = 0.7712 L
Compare and contrast the Ionization energies of groups 1&2 (Alkali and Alkaline metals) with the Ionization energies of groups 16&17 (Oxygen family and Halogens)
Answers
Answer:
Ionization energy is the energy required to remove an electron from a specific atom. It is measured in kJ/mol, which is an energy unit, much like calories. The ionization energies associated with some elements are described in the Table 1. For any given atom, the outermost valence electrons will have lower ionization energies than the inner-shell kernel electrons. As more electrons are added to a nucleus, the outer electrons become shielded from the nucleus by the inner shell electrons. This is called electron shielding .
Explanation:
a little summary
Ionization energy refers to the amount of energy needed to remove an electron from an atom.
Ionization energy decreases as we go down a group.
Ionization energy increases from left to right across the periodic table.
Story that ends in i have never found such a kind person ever since
Answers
Answer:
I was traveling on a train where I fell asleep. someone stole my luggage in which I had money and other essentials. when the ticket checker arrived a lady paid my fine. she helped me a lot. when I told her about being robbed she helped me and took me to the police station and I found my bag. I insisted she take the money she paid for my fine but she said that in return you too help someone."I have never found such a kind person ever since.".....
Explanation: I think this is what you are looking for. Hope this helps.
*2Al(OH), + 3H,SO, Al(SO4)2 + 6H2O
reaction type
Answers
Calculate the molarity of a solution prepared by dissolving 3.80 grams of AgNO3 in enough water to make 3.50 liters of solution. (If possible show process)
Answers
Answer:
By the end of this section, you will be able to:
Describe the fundamental properties of solutions
Calculate solution concentrations using molarity
Perform dilution calculations using the dilution equation
a tennis ball travels the length of rhe court, 24 m, in 0.5 s. Find its average speed
Answers
Answer:
48m/s
Explanation:
Based on Avogadro's principle, the coefficients in chemical equations involving only gases represent two types of quantities. Name the two quantities.
Answers
Answer:
subject
Chemistry, 08.04.2020 04:39 dnprops1544
Based on Avogadro's principle, the coefficients in chemical equations involving only gases
represent two types of quantities. Name the two quantities.
Explanation:
Answer: Molar ratio is the quantity which will correctly convert between two different substances.
Answer: Option B
Explanation:
Molar ratio is used to determine the number of moles of reactants required to convert to desired number of moles of the products and vice versa. As moles are the coefficient written in any chemical equation. The ratio of the number of moles of the reactants to the number of moles of the products will help to determine the molar ratio.
This molar ratio is used as the conversion factor to determine number of moles required in the reactant side for the reactants to form a desired product of desired moles. We can also determine the number of moles utilized from the reactants from the moles obtained in the products using this molar ratio conversion factor.
hear me out!! am I the only one who gets headaches on the daily? why do I get them?
Answers
Answer:
Same i have headaches daily, maybe from infections such as meningitis or Intracranial pressure that's either too high or too low or id.k.
each year, one person in north america uses resources equal to how much land? A. 12 miles B. 12 acres C. 120 acres
Answers
i think i don’t do geography
Which has a lower electronegativity and why? N or P? Use 'force of attraction' in your answer
Answers
Answer:
The electron sets divided among two particles are not really shared similarly. For instance, while the common electron sets are shared similarly in the covalent security in Cl2, in NaCl the 3s electron is taken from the Na iota and is fused into the electronic design of the Cl molecule - and the compound is most precisely portrayed as comprising of individual Na+ and Cl− particles (ionic holding). For most covalent substances, their bond character falls between these two limits. We showed beneath, the bond extremity is a helpful idea for portraying the sharing of electrons between molecules inside a covalent bond:
A nonpolar covalent bond is one in which the electrons are shared similarly between two particles.
A polar covalent bond is one in which one iota has a more noteworthy fascination for the electrons than the other molecule. On the off chance that this overall fascination is sufficiently incredible, the bond is an ionic bond.
Explanation:
Which statements describe the motion of the object represented by the graph? Select three options.
The object is moving away from the origin.
The object is moving towards the origin.
The object started at the origin.
The object started at 2 meters.
The object is traveling at a constant velocity.
Answers
Answer:
The object is moving away from the origin
The object started at 2 meters
The object is traveling at a constant velocity
Explanation:
Statements which best describe motion of object represented by graph are statement A,D and E.
What is motion?Motion is defined as a phenomenon which is described with respect to change in object's position with respect to time.It is given in terms of displacement,velocity,distance ,acceleration,speed.
Branch of physics which deals with motion of objects without any reference to it's cause is called kinematics while the branch which studies forces and their effects on motion is called as dynamics.
Motion applies to various systems like objects,bodies, matter particles ,radiation ,curvature.There are three laws of motion which are proposed by Newton.Classical mechanics is based on Newton's law of motion.Relativistic mechanics is based on modern kinematics.
Learn more about motion,here:
https://brainly.com/question/3421105
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in the single replacement reaction AB + C → A + CB, the anion in the reactant compound AB is _______
Answers
Answer:
The anion is B.
Explanation:
Compounds are usually written as [cation][anion], and the positive charge of the cation (A) will cancel out the negative charge of the anion (B). We are reaffirmed of our answer by the product CB, which also has B as an anion.
Answer:
B
Explanation:
Put the rules in order, first rule up top.
FIRST RULE
= Balance Oxygen
= Write down the elements
= Balance Hydrogen
= Balance non-metals
Balance metals
Answers
Answer:
Write down the elementsBalance MetalsBalance Non- metalsBalance OxygenBalance Hydrogen.Which of the following conditions must be met for a volume ratio to be created from a balanced chemical equation? (3 pm
O Changing temperature and pressure
Constant temperature and pressure
Changing temperature and constant pressure
Constant temperature and changing pressure
Answers
Answer:
The answer will be Constant temperature and pressure
Explanation:
Just took the test and it was correct 100%!!!
Answer:
Constant temperature and pressure
Explanation:
took the test
What is the correct formula for the compound formed by Mg and F?
MgF
Mg2F
Mg2+F
MgF2
Look at picture
ASAP please will mark as brainlist don’t got much time
Answers
Magnesium phosphate
Find Similar Structures
Molecular Formula
Mg3(PO4)2 or Mg3O8P2
Synonyms
magnesium phosphate
More...
Molecular Weight
262.86 g/mol
When the Hubble Space Telescope was first launched, it was the most advanced technology of its kind. Astronomers and astrophysicists all over the world celebrated its launch. Why was this event so important to these scientists?
1. Hubble provided a new way to study Earth's atmosphere.
2. Hubble proved that we could launch a telescope into space.
3. Hubble provided scientists with data about the Universe they had previously been unable to collect.
4. Hubble was able to collect physical samples from celestial bodies they had previously been unable to reach.
please help me
Answers
Answer:
C
Explanation:
its correct
''Hubble provided scientists with data about the Universe they had previously been unable to collect.'' is the right statement.
Benefits of Hubble Space TelescopeHubble Space Telescope helps the scientists to collect more data about the Universe which they had previously been unable to collect due to lower range of telescope.
This telescope has longer range and can see distant objects very clearly in the space so we can conclude that ''Hubble provided scientists with data about the Universe they had previously been unable to collect.'' is the correct statement.
Learn more about telescope here: https://brainly.com/question/18300677
2) Will all atoms behave exactly the same when the temperature is changed?
Answers
no...the atoms will not behave the same
as when temperature is increased, the atoms vibration and kinetic energy will also be increased....they come in excited state...
where as when temperature is reduced ,atoms kinetic energy slows down....
Which is a TRUE statement about
London Dispersion Forces?
ELECTRON moving causes partial
positive & negative charges creating
attraction
PROTON movement causes partial
positive & negative charges creating
attraction
Answers
Answer:
The London dispersion force is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles. Dispersion forces are present between any two molecules (even polar molecules) when they are almost touching.
Thus PROTON movement causes partial positive & negative charges creating
attraction will be crrt