121 mol CH₄
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Organic
Writing chemical compoundsWriting organic structuresPrefixesAlkanes, Alkenes, AlkynesAtomic Structure
Using Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:Step 1: Define
7.31 × 10²⁵ molecules CH₄
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
[tex]\displaystyle 7.31 \cdot 10^{25} \ molecules \ CH_4(\frac{1 \ mol \ CH_4}{6.022 \cdot 10^{23} \ molecules \ CH_4} ) = 121.388 \ mol \ CH_4[/tex]
Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
121.388 mol CH₄ ≈ 121 mol CH₄
Attempt 1
Question
You see Fred, a co-worker, not following safety procedures. What would be the best
thing to do?
A) nothing, as his safety is his own responsibility
B) pretend you didn't see him, but consider telling the boss
C) talk to him about putting his safety at risk
D) follow his example -- maybe the safety procedures are not necessary
Answer:
Would be C
Explanation:
helpig and bringing noice to a persons safety is always the right thing. C is correct, hope this helps
Which of the following is a layer of the solid Earth?
Answer:
The inner core is solid. But the mantle is solid/plastic
Explanation:
I completed the class Earth science
Answer:
The answer on study island in the LITHOSPHERE.
Explanation:
A word equation is commonly used for describing a:
a. Property of a compound
b. Property of an element
c. Chemical reaction
the answer is B because I jus did that
If 24 moles oxygen gas combined with 24 moles hydrogen gas, what would be the limiting reactant?
which element has two valence electrons in the s sublevel of the fourth energy level
How many moles of nitrogen are in a 14.57 gram sample of nitrogen?
Answer:
[tex]\boxed {\boxed {\sf About \ 1.040 \ moles \ of \ nitrogen }}[/tex]
Explanation:
To convert from grams to moles, we must use the molar mass. This can be found on the Periodic Table. We have a sample of nitrogen, so look for N on the table.
Nitrogen (N): 14.007 g/molNow, use this molar mass as a ratio.
[tex]\frac {14.007 \ g \ N }{1 \ mol \ N }[/tex]
Multiply by the number of grams in the sample (14.57)
[tex]14.57 \ g \ N *\frac {14.007 \ g \ N }{1 \ mol \ N }[/tex]
Flip the fraction so the grams of nitrogen will cancel.
[tex]14.57 \ g \ N *\frac {1 \ mol \ N }{14.007 \ g \ N}[/tex]
[tex]14.57 *\frac {1 \ mol \ N }{14.007 }[/tex]
[tex]\frac {14.57 \ mol \ N }{14.007 }[/tex]
[tex]1.04019419 \ mol \ N \\[/tex]
The original measurement of grams had 4 significant figures, so we need to round our answer to the same number of sig figs.
For the number we calculated, that is the thousandth place. The 1 in the ten thousandth place tells us to keep the 0 in the thousandth place.
[tex]1.040 \ mol \ N[/tex]
There are about 1.040 moles of nitrogen in 14.57 grams.
hi can someone pls help me it’s important i’m studying for my finals
Answer:
i think the answer is D)
but u should ask the another person too:)
A ball, starting from rest at Position 1, rolls down and then up a curved track towards Position 5. When it reaches Position 5, it rolls back down the track
2
Which description below is most consistent with what you can expect from the ball's motion?
The ball will roll as high as Position 1 since energy cannot be created or destroyed.
The ball will roll past Position 1 since energy cannot be created or destroyed.
The ball will roll as high as Position 2 since some of the energy will be transformed to heat,
The ball will roll as high as Position 3 since that position has the least potential energy.
Kk
Answer:
D. The ball will roll as high as Position 3 since that position has the least potential energy.
Explanation:
i am not sure that it's is right or wrong
Balancing Equations
Fe + O2 --> Fe2O3
Answer:
4Fe + 3O2 --> 2Fe2O3
Explanation:
PWEaseee help mweee ill mark brainliest I just need the answer pls and thank you amazing people
Molecules have Question 10 options: A) both potential and kinetic energy. B) neither kinetic nor potential energy. C) only potential energy. D) only kinetic energy.
Answer:
B?
Explanation:
The only way to see the far side of the moon is
Answer:
Only one side of the spherical Moon is ever visible from Earth it wasn't until 1959 when the Soviet Spacecraft Luna 3 orbited the Moon and sent pictures home that human beings were able to see the "far side" of the Moon for the first time. A phenomenon called tidal locking is responsible for the consistent view
After two alpha decays, Carbon-14 will become?
Answer:
Becomes Nitrogen-14
Explanation:
what are all the populations of different species that live in the same area at the same time
Answer:
The answer is Community
Explanation:
Which statement compares the attractive forces that hold particles together?
A. Polar covalent bonds and Van der Waals forces are weakly
attractive; ionic and hydrogen bonds are strongly attractive.
B. lonic and hydrogen bonds are weakly attractive; polar covalent
bonds and Van der Waals forces are strongly attractive.
C. lonic and polar covalent bonds are weakly attractive; hydrogen
bonding and Van der Waals forces are strongly attractive.
D. Hydrogen bonding and Van der Waals forces are weakly attractive;
ionic and polar covalent bonds are strongly attractive.
Polar covalent bonds and Van der Waals forces are weakly
attractive; ionic and hydrogen bonds are strongly attractive.
What is the attractive forces that hold particles together?We usually ranked the attractive forces that hold particles together while discussing them. Ionic bonds are the strongest, followed by hydrogen bonds that are somewhat weaker than that, and finally, his disciple disciple forces that are slightly weaker still. Then, Vander Wal's forces, also known as dispersion forces, are the weakest. The first one is ionic compounds, whereas the remaining three are frequently related to molecules or covalin compounds. Consequently, when comparing these attractive forces, the most accurate statement is is one of the first polar covalin bonds to form, resulting in dipole dipole forces. Let's call them polar covalin bonds, then. Van der Waals forces and polar covalin bonds are appealing on a weekly basis; these are the weakest.To learn more about attractive forces refer to:
https://brainly.com/question/20873733
#SPJ1
Answer:
D. Hydrogen bonding and Van der Waals forces are weakly attractive;
ionic and polar covalent bonds are strongly attractive.
Explanation:
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I need help really bad with this!!!
For the following:
Highlight each subscript in RED.
Highlight each coefficient in BLUE.
H2O 5Cl2 2Mg 3H2O2
For the following
List the chemical symbols of each element.
Give the number of atoms of each element.
HCl CO2 Na2SO4
Balance the following chemical equations.
1. Cu2O + C → Cu + CO2
2. H2O2 → H2O + O2
Al + Fe3N2 → AlN + Fe
4. Ag2S → Ag + S8
5. ZnS + AlP → Zn3P2 + Al2S3
6. Fe(OH)3 → Fe2O3 + H2O
Given the two chemical equations, highlight in RED the one that is balanced.
7. a. 2Na + Cl2 → 2NaCl
b. 2Na + 2Cl2 → 2NaCl
8. a. C3H8 + 5O2 → 3CO2 + 4H2O b. 2C3H8 + 5O2 → 3CO2 + 8H2O
9. a. 2NH3 + 5O2 → 2NO + 3H2O b. 4NH3 + 5O2 → 4NO + 6H2O
10. a. Y(NO3)2 + GaPO4 → YPO4 + Ga(NO3)2
b. 2Y(NO3)2 + 2GaPO4 → 2YPO4 + Ga(NO3)2
Answer:
Did u get the answers
Explanation:
What is the definition of hydro energy
Answer:
a form of energy that harnesses the power of water in motion—such as water flowing over a waterfall—to generate electricity.
Explanation
Order the following atoms from smallest to largest atomic radius: C, N, P
Answer:
N ∠ C ∠ P
Explanation:
Atomic radius:
It is define as the distance from nucleus of an atom the outer most electronic shell.
As we move down the group atomic radii increased because of increase of atomic number. Electrons are added in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.
When we move from left to right across the periodic table electron are added in the same shell at the same time protons are also added in the nucleus hence positive charge is going to increase and this effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus and atomic radii decreases.
Carbon and nitrogen are present in period 2 while phosphorus is present in period 3 thus phosphorus has largest atomic radii. Carbon and nitrogen are present in same period but nitrogen is more right as compared to the carbon which means nitrogen has one more valence electron thus its size is smaller than carbon.
Values of atomic radii.
P = 98pm
C = 67pm
N = 65 pm
N ∠ C ∠ P
Which of the following correctly lists the levels of organization from most complex to least complex? *
Community, Organism, Population, Ecosystem
Ecosystem, Community, Population, Organism
Population, Community, Ecosystem, Organism
Organism, Population, Community, Ecosystem
Answer:
The last option.
Explanation:
You can immediately eliminate the other options as an organism is clearly the least complex. Only one option begins w/ 'organism'.
Answer:
Its def A, if this helped subscribe to amiredagoat Yt
Explanation:
If you find a chemical in the lab and are unsure of
its identity, what is the best way to find out what it
is?
Answer:
C. read the label on the container
Explanation:
What information is found in an SDS? Check all that apply.
A. the identification of the chemical
C. the chemical and physical properties of the substance
D. the first-aid measures to take if an accident occurs involving the chemical
Answer:
C
Explanation:
just did it
A bicycle tire has a pressure of 18.5 lb/in^2 What's the pressure in torr?
Answer:
B y is a complete collection for your time and energy for the spread of Islam in the Horn of the following to make sure
Of the three types of plate boundaries, which type is most likely to be associated
with pulling or tension forces?
transform
convergent
divergent
You use a battery to power a small hand-held fan to keep cool in the summer what way is the energy transformed?
Answer:
Chemical to electrical to kinetic energy
Explanation:
In a battery-operated fan, first, the chemical energy stored in the battery is converted to electrical energy within the fan and then the electrical energy, in turn, is converted to kinetic energy which makes the blades of the fan rotate. The rotation of the fan creates a breeze that forces the evaporation of sweat molecules from the surface of the skin and causes cooling in return.
Why is it important for scientists to review and repeat the work of other scientists
Answer:
Accuracy
Explanation:
It is important for scientists to review the work of other scientists, so they can be sure there are no mistakes or lack of judgement. They repeat to compare results to make hypotheses.
pls helpppp
Is the law of conservation of mass observed in each equation?
1. 2KClO3=2KCl+3O2
2. CaCO3+2HCl=CaCl2+H2O+CO2
Answer:
its c my guy
Explanation:
14. A researcher Is curious to find out what effect classical music has on people's level of relaxation
(as measured by heart rate). She suspects that listening to classical music will make people feel
more calm and relaxed. The researcher lets one group listen to classical music for one hour and
then do a relaxing activity, like reading or drawing for another hour. She lets the other group sit in a
qulet room for two hours (they hear no music). After two hours, she monitors the heart rate of each
participant to measure their level of relaxation.
What is the error in thls experiment design?
A. There are two independent variables: classical music and an additional relaxing activity
B. There are two independent variables: the amount of time and heart rates
C. There are two dependent variables: classical music and an additional relaxing activity
D. There are two dependent variables: the amount of time and heart rates
Answer:
It should be "B"
Explanation:
:) :) :) :) :) :)
What happens when liquid changes to gas?
1.Added heat makes water molecules move fast enough to overcome the attraction
between them
2. Heat causes molecules to speed up and merge together (Which one?)
Answer:
#1
The temperature that this happens is called the freezing point and is the same temperature as the melting point. As more energy is put into the system, the water heats up, the molecules begin moving faster and faster until there is finally enough energy in the system to totally overcome the attractive forces.
Explanation:
#2
Heating a liquid increases the speed of the molecules. An increase in the speed of the molecules competes with the attraction between molecules and causes molecules to move a little further apart. ... A decrease in the speed of the molecules allows the attractions between molecules to bring them a little closer together.
what is potential energy?
Answer:
energy held by by an object becuase of its position relative to other objects
Explanation:
Answer:
The energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge , other factors.
Explanation:
I looked it up because i wanted to be sweet and help ((:
What common kitchen appliance uses radiation to heat food ?
Answer:
microwave
Explanation:
Answer:
Toaster ovens & Microwave
Explanation:
my cat just said HELL should i be concerned.
( i am dead serious not hello just HELL)
Answer:
Oh my. Just make sure that your cat isn't possessed by a demon or something. You never know if it's satan watching your back
Answer:
Explanation:
^^Shoyo hinata here!!!!!
welll that’s scary…!!! ♡(.◜ω◝.)♡
Awwwwwe I love cats when they talk! have u wached anime near your cat????? Maybe it’s possessed!!?!?!?