How many moles of oxygen atoms are in 7.9E-1 moles of CO_2? Only give the numeric value of your answer. Don’t include the units.
Answer:
The number of oxygen in 7.9 × 10⁻¹ moles of CO₂ is 9.5116 × 10²³ atoms of oxygen
Explanation:
The given parameters are;
The number of moles of CO₂ = 7.9 × 10⁻¹ moles
The number of molecules of CO₂ in one mole of CO₂ = 6.02 × 10²³
The number of molecules, [tex]N_{CO_2}[/tex], of CO₂ in 7.9 × 10⁻¹ moles is given as follows;
[tex]N_{CO_2}[/tex] = 7.9 × 10⁻¹ × 6.02 × 10²³ ≈ 4.76 × 10²³ molecules
The number of atoms of oxygen in one molecule of CO₂ = 2 oxygen atoms
Therefore;
The number of oxygen in 7.9 × 10⁻¹ moles of CO₂ = 2 × 4.76 × 10²³ ≈ 9.5116 × 10²³
The number of oxygen in 7.9 × 10⁻¹ moles of CO₂ ≈ 9.5116 × 10²³ atoms of oxygen.
when molecules are joined I an ordered structure
Answer:
ice
Explanation:
Scientists often _________________________ and _______________________ to help them interpret complex ideas. *
Answer:
no sir
Explanation:
what is the molecular activity of matter I NEED THIS ANSWERED FAST PLEASE
Answer:
Chemistry is the study of matter. Matter is made up of extremely tiny particles called atoms and molecules. Atoms and molecules make up the three common states of matter on Earth—solids, liquids, and gases. The particles of a liquid are attracted to one another, are in motion, and are able to move past one another.
Explanation:
Suppose you have a lead ball with a mass of 454g. What is it’s volume? (Density of lead is: 11.35 g/cm3) (show your work)
Answer:
The answer is
40 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} [/tex]
From the question
mass of lead = 454 g
density = 11.35 g/cm³
The volume of the lead is
[tex]volume = \frac{454}{11.35} [/tex]
We have the final answer as
40 mLHope this helps you
Students at Allendale High School were tardy most often for fourth hour, right after lunch. Therefore, the
administration decided to close campus for lunch. As a result, the number of students tardy for fourth hour drastically
decreased. When questioned, the principal could say that open campus lunch was a contributing factor to student
tardiness
Please select the best answer from the choices provided
T
F
There are different ways to know if a statement is true. When questioned, the principal could say that open campus lunch was a contributing factor to student tardiness is true statement.
This is because as they took away open campus for lunch that was when the tardiness for students decreased.
A statement is true if what it stand in gap for the case, Example is The buses are always early” is only true if what it describes is the case. That is, if it is actually the case that the buses are often early.
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Is a substance pure or a ____________?
Answer:
Pure substance is which it consists only one type of Atom , molecule , or compound....
Explanation:
HOPE IT HELP MARK AS BRAINLIST
what is mean by scientific approach in chemistry
brief it
Answer:
scientific approach
Explanation:
Method of investigation in which a problems is First identified and observations, experiment are done
9.56 x 10^5 cg is how many grams?
Answer:
9.56×10¯⁷ g.
Explanation:
Mass in cg = 9.56×10¯⁵ cg
Mass in g =.?
Thus, we can convert 9.56×10¯⁵ cg to grams (g) as illustrated below:
Recall:
1 cg = 0.01 g
Therefore,
9.56×10¯⁵ cg = 9.56×10¯⁵ cg × 0.01 g / 1 cg
9.56×10¯⁵ cg = 9.56×10¯⁷ g
Therefore, 9.56×10¯⁵ cg is equivalent to 9.56×10¯⁷ g.
Mass describes:
A.)How crowded particles are in an object.
B.) Amount of particles in an object.
C.) Size of an object
Answer:
amount of particles
Explanation:
Mass is the number of atoms in an object. That is why mass stays constant wherever you go unless the object magically gains or loses atoms
Study ISLAND OLEASE HELPP
Answer:
D) Magnesium :)
Explanation:
Answer:
D. Magnesium
Explanation:
A chemist compares two compounds that contain isotopes of carbon. What branch of chemistry does the chemist use?
Question options:
analytical
organic
inorganic
physical
Answer: análisis físico
Explanation:
Porque los isótpos son físicos.
How might a scientist compare theories by doing an experiment?
A. Make sure that the experiment is properly controlled.
B. Do an experiment which could only apply to one of the theories.
C. Check if the experiment gives the same results when it is repeated.
D. See which theory does a better job of explaining the results of the experiment.
Any body tell me Iron salt and water produced what
iron salts react with water to form hydrated iron ( III ) oxide which is basically rust
hope that helps :)
Find the unit rate. 14 apples for 2 pies
Your answer
Is?
Answer:
7
Explanation:
You have to divide 14 by 2 to find the unit rate/constant of proportionality.
Answer:
7
Explanation:
A 5.0 km race is scheduled for this weekend. How many miles is this race?
Answer:
3.10686
Explanation:
A 5.0 km race is scheduled for this weekend. Total miles is this race is 3.10686.
What is kinetic energy?Kinetic energy is a form of energy it possess when any object or person is in motion . It can be defined as the work needed to be done to produce a motion in a object from rest position.
If we want to acceleration in an object then we must apply a force on a object to give motion so we can say that we required to do work for acceleration and then we can say that required is equal to kinetic energy.
Mathematically,
Kinetic energy =1/2mv^2
Where
m = mass of object.
v = velocity of object
Kinetic energy is vector quantity it means that it have both i.e magnitude and vector. . It can be defined as the work needed to be done to produce a motion in a object from rest position.
S.I unit of Kinetic energy is Joule.
Therefore, A 5.0 km race is scheduled for this weekend. Total miles is this race is 3.10686.
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Definition of organelles:
Answer:
Explanation:
A structure or part that is enclosed within its own membrane inside a cell and has a particular function. Organelles are found only in eukaryotic cells and are absent from the cells of prokaryotes such as bacteria.
Which of these is an example of a chemical change?
A:breaking glass
B:melting ice on windshield
C:burning gasoline
D:denting a bumper
Answer:
C. burning gasoline
Explanation:
A chemical change happens when a chemical substance is TRANSFORMED into one or more different substances. In the other three examples, nothing is being chemically transformed.
il give brainly and 50 points if u answer my question
Answer: Whats ur Question?
Explanation:
A person runs 10 laps around 400m track in 20 min.calculate the runners average velocity in m/s
Explanation:
400×10=4000m
20×60=1200s
S=D÷T
S=4000÷1200
S=3.33m/s
what mass of copper is equivalent to 0.7moles?
The study of chemicals is called chemistry.
The correct answer is [tex]1.055* 10^{-22}[/tex].
Mass is defined as the Mass is the quantity of matter in a physical body. It is also a measure of the body's inertia, the resistance to acceleration when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies.
The formula is used is as follows:-
[tex]= \frac{1 mole}{6.022*10^{23}} *\frac{63.546}{1mole}\\\\=1.055*10^{-22}[/tex]
Hence, the correct answer is:- [tex]1.055*10^{-22}[/tex]
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The number behind the x is always
Answer:
being multiplied by x
Explanation:
I think,...
hope this helps :)
PLEASE HELP ME! I really need help coming up with a three course meal idea, I need this for chemistry, can someone help me please? I need an appetizer, a main course, and a desert. If you could find some recipes online, they don't need to be specific but do need at least five different ingredients each, that would be awesome. If you do do this, you can either list the website or type the recipe itself, I mainly need the numbers, like temperatures, amount of each ingredient, time cooking, stuff like that. I will mark whoever can do this as brainliest
appetizer - sausage w/ cheese dip
https:// www.platingsandpairings. com/sausage-bites-mustard-dipping-sauce/
Main course - Stuffed peppers
https:// www.bettycrocker. com/recipes/stuffed-peppers/63e29e18-903e-467c-aec5-fba4ce3a138f
Dessert - Lava cake
https:// sallysbakingaddiction. com/chocolate-lava-cakes/
When you heat water it turns into a
gas or liquid or gas
Answer: Gas
Explanation:
How many kilograms (kg) are in 6.89 pounds (lb)?
Answer:
1.4175902 kilograms
Explanation:
Answer:
3.125 kilograms is what 6.89 pounds is
What is the volume of a box measuring 3cmX6cmX4cm
Answer:
3×6= 18
18x4=72
The volume of the box is 72 cm^3
An object has a density of 10.00 g/mL. If the object has a volume of
25.00 ml, what is the mass?
Answer:
The answer is
250 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume of object = 25 mL
Density = 10 g/mL
The mass of the object is
mass = 25 × 10
We have the final answer as
250 gHope this helps you
8th Grade Checkpoint 1
Which statement accurately describes the atoms of a specific element?
An iridium, Ir, atom contains 77 protons inside the nucleus and 115 neutrons outside the nucleus.
palladium, Pd, atom contains 46 electrons outside the nucleus and 45 neutrons inside the nucle
An antimony, Sb,atom contains 51 protons inside the nucleus and 51 electrons outside the nucleu
A mercury, Hg, atom contains 80 electrons and 80 protons inside the nucleus.
Answer:
Antimony, Sb, an atom contains 51 protons inside the nucleus and 51 electrons outside the nucleus.
Explanation:
Option “C” is correct because protons exist inside the nucleus and electrons exist outside the nucleus. Moreover, Sb has the number of protons 51 that is found in the nucleus and it has 51 electrons that exist outside the nucleus. However, the nucleus contains protons and neutrons while electrons exist outside of the nucleus. All the given options do not follow such condition therefore, all the statements are incorrect accept option 3rd.
A quantity must be divided by multiples of ten when converting from a larger unit to a smaller unit.
RARE
Please select the best answer from the choices provided
T
F
Answer: true
Explanation:
Cuz I’m smart
Answer:
False
Explanation:
I just took the test.
2. Why is acid rain of particular interest of study?
Acid rain is of particular interest to study because it demonstrates the areas of geographical locations which are highly susceptible to pollution and scientists are able to reveal some valid conclusions.
What is Acid rain?Acid rain may be defined as the type of rain that significantly contains an excess amount of acids. The rain becomes acidic because of carbon dioxide, nitrogen dioxide, and sulfur dioxide when liberated into the air as pollutants. All these liberated compounds dissolve with raindrops in order to form carbonic acid, nitric acid, and sulphuric acid respectively.
Acid rain thus formed is very harmful as it destroys organisms and other objects on which it falls. It also destroys aquatic life, soil properties, crop productivity, etc. Acid rain reacts with marble and gradually corrodes it.
The overall concentration of acid rain at a particular location illustrates its degree of pollution, impurities in the environment, etc.
Therefore, acid rain demonstrates how much an area is susceptible to pollution. It also delivers a good concept for scientists to check it.
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