Taking into account the definition of oxidation number, the oxidation numbers of S in H₂SO₃ is 4.
Definition of oxidation numberThe oxidation number is the charge that an atom has; is an integer that represents the number of electrons an atom puts into play when it forms a given compound.
In other words, the oxidation number of an element is a value that indicates the number of electrons that element gains or loses when it combines with another.
Oxidation number determinationTo determine the oxidation state of different elements it is necessary to know that:
The oxidation number of hydrogen in a compound is +1, except in metal hydrides, where is –1.The oxidation number of oxygen in a compound is –2, except in peroxides, where it is –1.On the other side, the sum of the oxidation numbers of the existing elements in a chemical formula must add up to zero.
Then, considering the oxidation numbers of each element, multiplying it by the number of existing elements in the chemical formula and adding it and equaling it to zero, the value of the missing oxidation number can be obtained.
Oxidation numbers of SIn this case, the oxidation numbers of S in H₂SO₃ is calculated as:
2× (+1) + oxidation numbers of S + 3×(-2)= 0
2 + oxidation numbers of S -6= 0
oxidation numbers of S -4= 0
oxidation numbers of S= 4
Finally, the oxidation numbers of S in H₂SO₃ is 4.
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Which of the following determines the type of tree species found in a temperate broadleaf forest? (Select all that apply.)
soil conditions
temperature
precipitation
consumers
Answer: A B C
Explanation: chapter 34-45 pdf
Answer:
A, B, and C
Explanation:
I took I test and those were the correct answers
How many moles are in 20.0 g of water
When you see or visit grasslands, what do you know about the climate? (Select all that apply.)
They have a lot of precipitation.
They have mild to hot summers.
They have little precipitation.
They have cold winters.
When you see or visit grasslands you know that :
They have mild to hot summers ( B )They have a lot of precipitation ( A )Grassland vegetationGrasslands are a type of vegetation found mostly in areas with favourable weather conditions such as mild summers and right amount of precipitation which provides the grasslands with enough water for proper growth.
Other types of vegetation include :
Forest vegetationTundra and Desert vegetationDesert vegetation expreciences very hot summers and little precipitation which leads to the scarcity of green vegetation, while forest vegetation expreciences a very high level of precipitation.
Hence we can conclude that When you see or visit grasslands you know that :They have mild to hot summers ,They have a lot of precipitation
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Answer:
They have little precipitation.
They have cold winters.
They have mild to hot summers.
How do birth and death rates affect a population size?
Answer:
When the death rate is higher than the birth rate, the population decreases. It increases when the opposite happens.
Explanation:
Perform the following calculations to the correct number of significant figures.
(24.5260 × 2.56) + 397.84
If the pressure is 0.9 kPa. and the volume is 4.0L, then the pressure changes to 0.20 kPa. What is the new volume?
Answer:
18 L
Explanation:
boyles law
P1V1 = P2V2
V2 = P1V1/P2
V2 = (.9 * 4)/.2
V2 = 18
This question is based on Boyle's law as temperature is constant. Boyle's law is derived from ideal gas equation only at constant temperature. Therefore, the new pressure is 18L.
What is Boyle's law?Boyle's law is a law which states that at constant temperature, the pressure that is exerted by an ideal gas on the walls of the container is inversely proportional to the volume occupied that gas.
Ideal gas is a gas where there is no forces of attraction or forces of repulsion between the particles . The volume of container is equal to the volume occupied by the gas.
Mathematically, Boyle's law can be written as
P₁V₁ = P₂V₂
P₁=initial pressure
P₂=final pressure
V₁ = initial volume
V₂=final pressure
V₂ = P₁V₁/P₂
V₂ = (0.9 × 4)/0.2
V₂ = 18L
Therefore, the new volume is 18L.
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When radon decays, it becomes polonium and yields a first-order rate law. If the rate constant is 0.175 days^-1
and you begin with a 8.64 g sample of radon:
(a) How much will be left after 2.96 days?
(b) How much will be left after 46.4 hours?
(c) What is the half-life of radon?
(d) How many grams of radon will be left after 5 half-lives?
This problem is providing us with the rate constant and initial mass for radon's decay. Thus, several questions regarding how much it is left over after specific times are proposed and solved along this.
Radioactive decayIn chemistry, radioactive decay is a process whereby an unstable atomic nucleus loses energy by radiation, and therefore its mass decreases as the time goes by.
In such a way, one can use the following equation for the required questions:
[tex]A=Ao*exp(-t*k)[/tex]
Where A is how much is left over, Ao the initial amount, t the elapsed time and k the rate constant. Thus, we can proceed as follows:
(a) we just plug in the 2.96 days:
[tex]A=8.64g*exp(-2.96day*0.175day^{-1})\\\\A=5.15g[/tex]
(b) we need to convert 46.4 hours to days:
[tex]A=8.64g*exp(-46.4hr*\frac{1day}{24hr} *0.175day^{-1})\\\\A=6.16g[/tex]
(c) we assume this is a first-order reaction so we use its definition of half-life as:
[tex]t_{1/2}=\frac{ln(2)}{k} =\frac{ln(2)}{0.175day^{-1}}=3.96day[/tex]
(d) if five half-lives have taken place, the radon which is left over turns out to be:
[tex]A=8.64g*(\frac{1}{2} )^5\\\\A=0.270g[/tex]
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what is 2x10? I need help on my.
Answer:
20
Explanation:
Add 10, then another 10.
That makes 20.
Hope it helps!
Answer:
The answer is 20
Explanation:
10+10=20
20=two 10 put together hint/stragedy add the ones in the beggining of the 10 and bring down the 0
brainly for good explination? hope this helps bless you!
Suppose you are performing a hydroboration oxidation of 1-hexene to form 1-hexanol. Your reaction includes 0.82 mL of 1-hexene, which has a density of 0.673 g/mL, 1.80 mL of 1.00 M borane in THF, and 1.31 mL of 30.0% m/v hydrogen peroxide. What is the theoretical yield of 1-hexanol (in g) for the reaction
From the stoichiometry of the reaction 0.18 g of 1-hexanol is formed.
What is theoretical yield?The theoretical yield of a compound is its yield based on the stoichiometry of the reaction.
We must now obtain the number of moles of each reactant:
For hexane;
Mass of hexane = Density × volume = 0.82 mL × 0.673 g/mL = 0.55 g
Number of moles = 0.55 g/84 g/mol = 0.0065 moles
For borane;
Number of moles = concentration × volume = 1.00 M × 1.80/1000 L = 0.0018 moles
Since the reaction is 1:1, borane is the limiting reactant, hence;
Number of moles of 1-hexanol = 0.0018 moles × 102 g/mol = 0.18 g
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Please answer quick
According to the Environmental
Protection Agency (EPA), what
minimum level of decibels over a
24-hour period is considered the
maximum exposure for humans
to avoid hearing loss?
A. 70
B. 15
C. 90
D. 5
Answer:
It will be D
Explanation:
Determine the amount of mols in 1.50 X 10^23 atoms of Cl2.
0.249 moles
Explanation:
Given:
No. of atoms= 1.50 X 10^23 atoms
NA= 6.022 X 10^23 atoms
To Find:
Moles= ?
Solution:
Mole = No. of atoms/NA
= 1.50 X 10^23/6.022 X 10^23
= 0.249 moles
Image included
At constant pressure which graph shows the correct relationship between the volume of a gas (v) and its absolute temperature (t)?
Answer:1
Explanation:cause castle told me
what is skelation system
sǝuoq ɹnoʎ ɟo llɐ
Explanation:
Answer:
Your body's frame work.
Explanation:
What keeps you standing.
Hi, im really confused can someone help
Perform the following calculations to the correct number of significant figures.
[(2.33 × 10*) ÷ 42.370] + 132.99
Answer:
55,124.729438282
Explanation:
please subscribe to Zubair sarookh channel
What type of compound is CH 3-CH 2-CH 3?
Answer:
alkane
Explanation:
how can we save our planet from pullution?
Answer:
by using electric cars
Explanation:
nice to see theres another emily yoder on here?
Answer:
We can start by replacing all non-renewable sources with renewable source to prevent harm of land and pollution. Then we can go to solar/energy powered machine instead of coal and oil which is harming our system by harvesting and throwing away.
Explanation:
The Percentage of salt-water vs. fresh-water:???%
Answer:
Over 96 percent is saline. Of total freshwater, over 68 percent is locked up in ice and glaciers. Another 30 percent of freshwater is in the ground.
How could you “supersaturate” solutions, exceeding the amount of dissolved solute possible
for a given volume of solvent by preventing formula units from precipitating into crystals?
Answer:
Explanation:
In a saturated solution, more solute cannot be dissolved at a given temperature.
This is because, the solute dissolves in a solvent because of space between particles of solvent but on continuous addition of solute, the space between the solvent particles gets fulfilled. Thus no more solute particle can dissolve in a solvent.
How much did you pay if an item with an original price of $43.43 has a 20% discount?
Answer:
Original price: $
54.29
Discount percentage:
20
%
Explanation:
CUZ I AM A CAHIER FOR MC DONALDS JK ITS CUZ I AM SMART.
Changes in temperature, pressure, and volume affect the behavior of gases more than they affect solids and liquids. _______________
Answer:
This statement is correct.
Explanation:
When the temperature of a gas is decreased, gas converts into liquid state but when a high pressure is applied on a gas , it also converts into liquid state.
If we lower the temperature of a gas, the particles of the gas loose all the kinetic energy and become less movable. Due to this all the particles of the gas come more close to each other and get condense on any solid surfaces and becomes liquid.
For example, water vapours get condense on the surface of a cold drink bottle when these water vapours get in contact with the cool surface of the bottle.
If we apply the high pressure on a gas, all the particles come very close to each other and become dense and changes into liquid.
A sample of 41.9 g of aluminum is reacted with
67.2 g of chlorine gas to produce aluminum
trichloride. Using the balanced equation below,
predict which is the limiting reactant and the
maximum amount in moles of aluminum trichloride
that can be produced.
2A1 + 3Cl2 + 2AlCl3
A. aluminum, 1.55 moles
B. chlorine gas, 0.632 moles
C. aluminum, 0.865 moles
D. chlorine gas, 0.954 moles
Answer:
B
Explanation:
mechanism of this reaction
Answer:
A reaction mechanism is the sequence of elementary steps by which a chemical reaction occurs. A reaction that occurs in two or more elementary steps is called a multistep or complex reaction. ... The slowest step in a reaction mechanism is known as the rate-determining step.
A liter of 2M NaOH solution contains how many grams of NaOH?
Na(OH)2
Explanation:
look for the charges to the periodic table
How much energy must a 10 gram block of ice gain in order to melt ?
Answer:
the answer is 10 times
Explanation:
because it takes 10 times as much energy -3330 j - to melt 10.0 grams of ice.
The group of organic molecule polymers with the most complex and diverse three-dimensional structure is
The group of organic molecule polymers with the most complex and
diverse three-dimensional structure is Protein.
What is Protein?This is a biological macromolecule which comprises of one or more chains
of amino acids. They are very important as they are involved in many
biological activities in the body.
Protein has the most complex and diverse three-dimensional structure
because there are over twenty amino acids which are arranged uniquely
to form different types of protein.
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SOS PLEASE HELP ME
_____ is (are) made of more than one atom.
A. A molecule
B. Protons
C.Neutrons
D. An element
Elements on the far right of the periodic table are
Answer
Noble Gases
Explanation: It is noble gases On the Website Ptable it will show you all the facts you need to know about each element
Calculate the density of the liquid in g/mL to the correct number of significant digits,
Answer:
1.0 g/mL
Explanation:
Mass of liquid = 163.3 - 155.0 = 8.3 g
Volume of liquid = 8.02 mL
Density = Mass / Volume
Density = 8.3 g / 8.02 mL
Density = 1.034913 g/mL
Changing to correct number of significant digits.
Density = 1.0 g/mL
Question 9
Charles runs two laps around 500 m track. Waht is his total distance traveled?
distance traveled =
m
Answer:
1000 or 250
Explanation:
500x2=1000
or
500/2=250
