This problem is providing us with the percent composition of a compound containing sodium, bromine and oxygen. Thus, the empirical formula is required and found to be NaBrO₃.
Empirical formulasIn chemistry, empirical formulas are used in order to figure out the minimum whole-number representation of a molecular formula, which contains the actual number of atoms.
Thus, we start determining it by assuming the given percentages as masses and calculating the moles with the atomic mass of the involved elements:
[tex]n_{Na}=\frac{15.24}{22.99}=0.700 \\\\n_{Br}=\frac{52.95}{79.90} =0.663\\\\n_O=\frac{31.81}{16.00}=1.99[/tex]
Next, we divide by the 0.633 as the smallest number of moles in order to determine their subscripts in the chemical formula:
[tex]Na:\frac{0.700}{0.663}=1\\ \\Br:\frac{0.663}{0.663}=1\\ \\O=\frac{1.99}{0.663} =3[/tex]
Hence, the empirical formula turns out to be NaBrO₃.
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How are the angles and side lengths within triangle related?
Answer:
Explanation:
if the side lengths of a triangle are equal then the angles opposite to those sides are equal . This is a case of an isosceles triangle .
And if all the sides of a triangle are equal then all the angles of a triangle will be equal . This is a case of an equilateral triangle.
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ANSWER THE FOLLOWING QUESTIONS
Explain what is a solar eclipse and why they are so rare IN YOUR OWN WORDS
Explain what is a lunar eclipse and why the moon turns red, and why it's more common IN YOUR OWN WORDS
Answer:
This is true: Lunar eclipses happen more often. I think it's just a question of how big the shadows are: There is a lunar eclipse when the Earth blocks the Moon's light from the Sun. 7000 km away from the Moon, the Earth's shadow is about two lunar diameters wide. Much wider than a pancake. The reason that the moon turns red, is due to Earth's atmosphere. It bends red rays of sunlight into our planet's shadow and scatters out blue rays of light.
When the Moon casts a shadow on the Earth, it is called a solar eclipse. The Moon is a lot smaller now, and its shadow is also a lot smaller than it was before. Around 200 or 300 km across is how big the Moon's shadow is when it's far from the Earth.
Fun Facts:
- The 21st century has 224 solar eclipses and 230 lunar eclipses (all varieties of each combined)
What is the relationship between absorbance and transmittance of a sample in a spectrophotometer? Plz help!!
Answer:
thanks for the pointthanks for the pointthanks for the point
Explanation:
thanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the póînt pa rin ang worksheets weeks ago by JanuaryAccording to the theory of plate tectonics, where do most active volcanoes occur?.
Answer:
I think this is the right answer. I researched this. I am not sure if this is the right answer.
Most of the world's active volcanoes are located along or near the boundaries between shifting plates and are called "plate-boundary" volcanoes. The double lines indicate zones of spreading from which plates are moving apart
Explanation:
A sample of hydrogen exerts a pressure of 0.429 atm at 50.00°C. The gas is heated to
95.00°C at a constant volume. What will its new pressure be?
Answer:
5.847atm
Explanation:
according to Gay- Lussac's law
P1/T1 =P2/ T2
If you transfer energy into two substances which one would melt first
Answer:
The substance with a weaker molecular attraction
A particle accelerates from rest with an acceleration of 8. 0m/s2. Calculate its velocity after 150s.
The acceleration can be defined as the change in velocity with respect to time. The velocity of the particle is 1200 m/s.
What is the kinematic equation?
The movement of the particles is described with the rate of change in the position of the object with respect to time. The change in position, velocity, and acceleration is given by the Newton's kinematics equations.
The velocity of particle with respect to acceleration can be given as:
[tex]v=u+at[/tex]
Where, the initial position rest has the initial velocity, [tex]u=0\rm \;m/s[/tex]
The acceleration of the particle, [tex]a= 8. 0\;\rm m/s^2[/tex]
The time for the final velocity, [tex]t=150\;\rm sec[/tex]
Substituting the values in the equation for final velocity, v:
[tex]v= 0+ 8. 0\;\times\;150\;\rm m/s\\\textit v=1200\;m/s[/tex]
The velocity of the particle after 150 seconds is 1200 m/s.
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How many grams of sodium hydroxide needed to be obtained in order to get 1.7 x 1024 molecules NaOH?
Answer:
n order to get that molecule you hgave to go into atoms like the skin of of it.... I'm just trying to sound smartI
Explanation:
Bile salts play a crucial role in gastrointestinal homeostasis and digestion. Which phrase is the BEST description of the gastrointestinal function of bile salts?
Answer:
bile salts emulsify fats and break them down into smaller particles which gives the enzyme lipase a greater surface area to act on during digestion of fats.
Explanation:
Porque a las vacunas los cientificos los llaman reactivos.
Answer:
Because scientists call vaccines reagents.
Elements on the right side of the periodic table are called.
Answer:
Nonmetals is the answer!
Hope this helped!
Answer:
NONMETALS. :)
Explanation:
im in sixth btw.
What color of light is emitted from an excited hydrogen atom where the electron has been promoted to n
Answer:
n1 = 2, n2 = 4
1/wavelength = 1.097*10^7[1/2^2 — 1/4^2]
1/wavelength =0.20568*10^7
wavelength = 486.192*10^-9 Or
wavelength = 486.19 nm (blue color)
Explanation:
I just answered this in class
How does carbon dioxide affect the Earth's climate?
Question 17 options:
Carbon dioxide is being added to the soil, which causes weather phenomenon.
Carbon dioxide mixes with water vapor to take harmful chemicals out of the air.
While carbon dioxide is in the air waiting to be reabsorbed it traps the sun's heat.
Answer:
While carbon dioxide is in the air waiting to be reabsorbed it traps the sun's heat.
For which example would carbon-14 dating be appropriate for dating?.
Answer:
"6,000-year-old seeds from an ancient culture" is one example among the following examples given in the question that carbon-14 dating would be appropriate for dating.
Explanation:
Thought you meant by something els sorry :)
A cube of sugar has the length of one side 4cm.find its volume
Answer:
64
Explanation:
since it's a cube all sides are equal
and to calculate volume you multiply the length by the hieght by the width
what is 37degrees Celsius in Si units
Answer:
310.15 Degrees Kelvin
Explanation:
37 Degrees Celsius = 310.15 Degrees Kelvin = 98.6 Degrees Fahrenheit
Conversion Factor from Celsius to kelvin
or 37 + 273 = 310 Degrees Kelvin
5. The excited players celebrated because they won the game. 6. Everyone at the birthday party ate the delicious birthday cake.
Answer:
5. The excited players celebrated because they won the game. 6. Everyone at the birthday party ate the delicious birthday cake is the question
Explanation:
What happens to the freezing temperature of a solvent when a
solute is dissolved into it?
a It is unaffected.
b It increases
Clt decreases.
d It either increases or decreases
Answer:it decreases
Explanation:
does this image show a physical or chemical change?
Answer:
Physical
Explanation:
When a substance changes from liquid to gas it's a physical change. There is no chemical reaction between the rubbing alcohol or anything else that would change it's chemical composition.
Radiant energy is emitted from all objects with temperatures greater than ____________. This means ____________ objects emit radiant energy.
Radiant energy is emitted from all objects with temperatures greater than ABSOLUTE ZERO. This means ALL objects emit radiant energy.
Radiant Heat and TemperatureRadiant heat is a type of energy that largely depends on the temperature of an object.
This type of energy (radiant energy) is emitted from all objects and can be observed when heat is absorbed on the surface of another material.
Radiant energy can be defined as a type of electromagnetic energy.
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what type of energy transfer occurs as a coiled spring is released
Answer:
When a spring is coiled up or a rubber band is stretched, mechanical energy is stored in it. When the spring uncoils or the rubber band snaps back, this energy is released. This stored mechanical energy is called potential energy because it has the potential to make things happen.Explanation:
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After an investigation, Kuri determines that her hypothesis was wrong. What is the best thing for Kuri to do next? propose a scientific theory that explains what went wrong write a new hypothesis and conduct new experiments to explore the matter rewrite a scientific law to better predict the observations she gathered move on to a different topic because there is no value in a wrong hypothesis.
The best thing to do if a hypothesis was found to be wrong after conducting an investigation would be to write a new hypothesis and conduct new experiments to explore the matter.
HypothesisThe formulation of hypotheses is one of the key steps in the scientific method.
Hypotheses are usually tested using experiments and are usually accepted or rejected depending on the outcome of the experiments.
If a hypothesis is rejected, it does not mean that the entire subject is abandoned. Rather, new hypotheses may be formed and experiments conducted to further explore the subject.
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Answer:
The best thing to do if a hypothesis was found to be wrong after conducting an investigation would be to write a new hypothesis and conduct new experiments to explore the matter.
Explanation:
What would be the advantage of using a molecular model.
Answer: Can pick it up and hold it, can rotate groups about bonds
and can look for symmetry
Explanation: A molecular model is a plastic model with interchangeable balls. Represents molecules and their processes.
The creation of mathematical models of molecular properties and behavior is molecular modelling, and their graphical depiction is molecular graphics, but these topics are closely linked and each uses techniques from the others.
[WILL MARK BRAINLIEST!!] Describe the relationship between molecular structure and the strength of electrostatic
forces between molecules. How does this impact boiling and melting points?
Answer:
increase the bonding strength between two or more molecules
hope this help
Explanation:
Boiling points and melting points
The overarching principle involved is simple: the stronger the noncovalent interactions between molecules, the more energy that is required, in the form of heat, to break them apart. Higher melting and boiling points signify stronger noncovalent intermolecular forces.
1) How many grams of lithium, Li, contain 4.567 x 10^23 atoms?
2)What is the average mass (in grams) of one calcium, Ca, atom?
b) What is the average mass (in grams) of one mole of Ca atoms?
5.31 g of lithium contains 4.567 x 10^23 atoms.
The average mass (in grams) of one calcium, Ca, atom is 6.64 * 10^-23 g.
The average mass (in grams) of one mole of Ca atoms is 40.0 g.
What is the mass in grams of 4.567 x 10^23 atoms of lithium?The molar mass of lithium is 7.0 g
One mole of lithium atom contains 6.02 * 10^23 atoms.
6.02 * 10^23 atoms of lithium weighs 7.0 g
4.567 x 10^23 atoms of lithium will weigh 4.567 x 10^23 * 7.0 g/6.02 * 10^23 = 5.31 g
Therefore, 5.31 g of lithium contains 4.567 x 10^23 atoms.
What is the average mass (in grams) of one calcium, Ca, atom?
6.02 * 10^23 atoms of calcium weigh 40.0 g
1 atom will weigh 1 * 40.0 g/6.02 * 10^23 = 6.64 * 10^-23 g
Therefore, the average mass (in grams) of one calcium, Ca, atom is 6.64 * 10^-23 g.
What is the average mass (in grams) of one mole of Ca atoms?The molar mass of calcium is 40.0 g
Therefore, the average mass (in grams) of one mole of Ca atoms is 40.0 g.
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According to the Law of Conservation of Matter, what happens to atoms of gas in a balloon when it is placed in the freezer?
the number of atoms stays the same and the energy stays the same, keeping the volume the same
the number of atoms stays the same as the atoms lose energy to the colder freezer, slow down, get closer together, shrinking the volume
the number of atoms increases, causing an increase in energy and an increase in volume
the number of atoms decreases, which takes up less space and decreases the volume
Answer:
the number of atoms stays the same as the atoms lose energy to the colder freezer, slow down, get closer together, shrinking the volume
Explanation:
When a liquid is cooled, the average energy of the molecules decreases. At some point, the amount of heat removed is great enough that the attractive forces between molecules draw the molecules close together, and the liquid freezes to a solid.
I hope it helps.
- Would you expect the compound Ag3N to be a solid, liquid, or gas? Explain.
What must occur before a newly made polypeptide is secreted from a cell?.
Answer: Your answer is Its signal sequence must target it to the ER, after which it goes to the Golgi.
Hope this helps!
What is the maximum possible amount of product obtained in a chemical reaction?.
Answer:
theoretical yield
Explanation:
Theoretical yield is the maximum possible amount of product obtained in a chemical reaction .
What do you mean by the theoretical yield ?Theoretical yield is the quantity of a product obtained from the complete transformation of the limiting reactant in a chemical reaction.
Theoretical yield is commonly expressed in terms of grams or moles.
It can be calculated from-:
The balanced chemical equation, the mass and relative formula mass of the limiting reactant, and the relative formula mass of the product.
Hence ,theoretical yield is the maximum possible amount of product obtained in a chemical reaction .
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Jim's car travels 60.2 meters in 5 seconds. Tara's car travels 72 in 6 seconds. What is the speed for each car? Whose car travels fastest?
Answer:
Jim's car travels: 12.04 meters per second.
Tara's car travels 12 meters per second.
Explanation:
Tara's car travels the fastest.