Answer:
2Sb^(+3) (aq) + 3S^(-2) (aq) = Sb_2•S_3
Explanation:
First of all, let us balance the equation to give;
2Sb(OH)3 (s) + 3Na2S (aq) = Sb2S3 + 3NaOH
Now, we can observe the presence of positive Sodium ions (Na+) and negative hydroxyl ions (OH-) on both left and right sides of the equation.
Now, the two ions will cancel out. These ions are not really involved in the overall reaction and thus do not require being written in the overall equation. Hence, the overall net ionic reaction can now be written as:
2Sb^(+3) (aq) + 3S^(-2) (aq) = Sb_2•S_3
If you shake up different kinds or brands of soft drinks will they all spew you the same amount
Answer:
The different brands of sodas will not spew the same amount when shaken because there are different amounts of sugar in the sodas and that will affect the amount spewing. Pepsi will spew the highest, compared to the other brands of sodas
Explanation:
The amount of fizz that different kinds or brands of soft drinks spew out when shaken up may not be the same.
The fizz that soft drinks produce is due to the carbon dioxide gas that is dissolved in the drink. The amount of fizz that soft drinks produce when shaken up can vary depending on various factors such as the brand of soft drink, the temperature of the drink, and the level of carbonation of the drink. When a soft drink bottle or can is shaken, the carbon dioxide gas gets released from the solution and forms bubbles, which causes the spewing action.
However, the amount of carbon dioxide gas that is dissolved in the drink can vary depending on the brand and the level of carbonation. This means that some soft drinks may produce more fizz than others when shaken up.In summary, the amount of fizz that soft drinks produce when shaken up can vary depending on various factors.
Hence different kinds or brands of soft drinks may not spew you the same amount.
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One _____ is the amount of energy needed to apply a force of 1 Newton over a distance of 1 meter. (Spell out your answer.)
The answer is joule
Calculate the density of O2(g) at 415 K and 310 bar using the ideal gas and the van der Waals equations of state. Use a numerical solver to solve the van der Waals equation for Vm or use an iterative approach starting with Vm equal to the ideal gas result. Based on your result, does the attractive or repulsive contribution to the interaction potential dominate under these conditions?
Answer:
Explanation:
From the given information:
The density of O₂ gas = [tex]d_{ideal} = \dfrac{P\times M}{RT}[/tex]
here:
P = pressure of the O₂ gas = 310 bar
= [tex]310 \ bar \times \dfrac{0.987 \ atm}{1 \ bar}[/tex]
= 305.97 atm
The temperature T = 415 K
The rate R = 0.0821 L.atm/mol.K
molar mass of O₂ gas = 32 g/mol
∴
[tex]d_{ideal} = \dfrac{305.97 \ \times 32}{0.0821 \times 415}[/tex]
[tex]d_{ideal}[/tex] = 287.37 g/L
To find the density using the Van der Waal equation
Recall that:
the Van der Waal constant for O₂ is:
a = 1.382 bar. L²/mol² &
b = 0.0319 L/mol
The initial step is to determine the volume = Vm
The Van der Waal equation can be represented as:
[tex]P =\dfrac{RT}{V-b}-\dfrac{a}{V^2}[/tex]
where;
R = gas constant (in bar) = 8.314 × 10⁻² L.bar/ K.mol
Replacing our values into the above equation, we have:
[tex]310 =\dfrac{0.08314\times 415}{V-0.0319}-\dfrac{1.382}{V^2}[/tex]
[tex]310 =\dfrac{34.5031}{V-0.0319}-\dfrac{1.382}{V^2}[/tex]
[tex]310V^3 -44.389V^2+1.382V-0.044=0[/tex]
After solving;
V = 0.1152 L
∴
[tex]d_{Van \ der \ Waal} = \dfrac{32}{0.1152}[/tex]
[tex]d_{Van \ der \ Waal}[/tex] = 277.77 g/L
We say that the repulsive part of the interaction potential dominates because the results showcase that the density of the Van der Waals is lesser than the density of ideal gas.
What is the enthalpy change for the reaction
You discover some bones that have roughly %s as much carbon-14 in them as
they initially possessed. How long ago did the animal live?
Answer:
150 years i guess so? im nkt sure
Answer:
If a fossil bone is found to contain 1/8th as much Carbon-14 as the bone of a living animal, what is the approximate age of the fossil?(half-life of C-14 = 5800 years)
Explanation:
1. How do you determine how many protons are in a neutral element?
Answer:
The number of protons in an atom is always equal to the atomic number.
Explanation:
11. The major constituents of the Earth's current atmosphere are
a. moslty oxygen with some CO2
b. 78% oxygen, 21% nitrogen
C.78% nitrogen, 21% oxygen
12. The Earth's primitive atmosphere
a. was primarily hydrogen and helium, like the giant planets'
b. escaped due to the Earth's rapid loss of heat from its interior
C. was mostly carbon dioxide, since plants hadn't yet formed to add oxygen
13. The Earth's magnetic field stretches out in an area called the
A.Magnetosphere
b. Troposphere
C. Atmosphere
Answer:
C, C, A
Explanation:
11. C
12. C
13. A
A cube of ice melts in a breaker to form 10g of water
Answer:
10 g The change from ice to water is a phase change for the water. A phase change does not change the mass of the water. So if you end up with 10 g of water, and you originally started with ice, then that means you had to start with 10 g of ice. Therefore the best estimate of the mass of the ice cube is 10 g.
Explanation:
In the PhET simulation, make sure that the checkbox Stable/Unstable in the bottom right is checked. Using the PhET simulation as a reference, determine whether the following combinations of protons and neutrons form stable or unstable nuclei by adding protons and neutrons to the nucleus. Unstable nuclei will shake. If the Stable/Unstable checkbox in the lower right is also checked, the nuclei will be labeled Stable or Unstable. Sort the following combinations of protons and neutrons according to whether or not they form stable or unstable nuclei.
a. 4 protons and 5 neutrons
b. 7 protons and 7 neutrons
c. 2 protons and 3 neutrons
d. 3 protons and 0 neutrons
e. 6 protons and 5 neutrons
f. 9 protons and 9 neutrons
g. 8 protons and 7 neutrons
h. 1 proton and 0 neutrons
Answer:
kindly check the EXPLANATION SECTION
Explanation:
In order to be able to answer this question one has to consider the neutron proton ratio. Considering this ratio will allow us to determine the stability of a nuclei. The most important rule that helps us in determination of stability is that when the Neutron- Proton ratio of any nuclei ranges from to 1 to 1.5, then we say the nuclei is STABLE.
Also, we need to understand that when the Neutron- Proton ratio is LESS THAN 1 or GREATER THYAN 1.5, then we say the nuclei is UNSTABLE.
So, let us check which is stable and which is unstable:
a. 4 protons and 5 neutrons = Neutron- proton ratio = N/P = 5/4= stable.
b. 7 protons and 7 neutrons = Neutron- proton ratio = N/P = 7/7= 1 = stable.
c. 2 protons and 3 neutrons = Neutron- proton ratio = N/P = 3/5 =0.6 =unstable.
d. 3 protons and 0 neutrons = Neutron- proton ratio = N/P = 0/3= 0= unstable.
e. 6 protons and 5 neutrons = Neutron- proton ratio = N/P = 5/6= 0.83 = unstable.
f. 9 protons and 9 neutrons = Neutron- proton ratio = N/P = 9/9 = 1 = stable.
g. 8 protons and 7 neutrons = Neutron- proton ratio = N/P = 7/8 =0.875 = unstable.
h. 1 proton and 0 neutrons = Neutron- proton ratio = N/P = 0/1 =0 = unstable
A nucleus is unstable if the neutron - proton ratio is less than 1 or greater than 1.5.
The stability of a nucleus depends on the neutron - proton ratio. We must not that an atom is unstable if the neutron - proton ratio is less than 1 or greater than 1.5. Let us now examine each case.
4 protons and 5 neutrons - N/P ratio = 1.25 - stable 7 protons and 7 neutrons - N/P ratio = 1 - stable2 protons and 3 neutrons - N/P ratio = 1.5 - stable6 protons and 5 neutrons - N/P ratio = 0.83 - unstable 9 protons and 9 neutrons - N/P ratio = 1 - stable8 protons and 7 neutrons - N/P ratio = 0.88 - unstable1 proton and 0 neutrons - N/P ratio = 0 - unstableLearn more about stability of nuclei: https://brainly.com/question/494665
Carbon-14 has a half-life of 5,730 years. How long will it take for 112.5 g of a 120.0-g sample to decay radioactively?
5,730 years
11,460 years
17,190 years
22,920 years
Answer:
22,920 years
Explanation:
Took the quiz on Edge
The time that it will take for 112.5 g of a 120.0-g sample to decay radioactively is about 22,920 years.
What is half life?The term half life is defined as the time taken for only half of the radioactive sample to remain.
The time that it will take for 112.5 g of a 120.0-g sample to decay radioactively is about 22,920 years.
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whats the balanced chemical equation for Solid potassium iodide decomposes into solid potassium and iodine gas
Answer:
Solid potassium iodide decomposes into solid potassium and iodide gas.
Explanation:
The answer given has a subscript "2" on the iodine at the start of the equation. Why is the 2 there as a subscript?
Which method is better for determining the identity of an element: flame test or spectroscopy?
Answer:
Flame tests are used to identify the presence of a relatively small number of metal ions in a compound. Not all metal ions give flame colors. For Group 1 compounds, flame tests are usually by far the easiest way of identifying which metal you have got. ... Confirm the colors with the elements on Table 1
Explanation:
Which of the following pairs of elements would most likely
undergo a violent reaction if combined with each other?
a Zn and S
b Kand o
C Fe and Cl
d Cs and F
Answer: CS and F
Explanation:
...ck-12
The pair of elements that would most likely undergo a violent reaction if combined with each other is; Choice D: Cs and F
According to the question;
We are required to determine the pair of elements would most likely undergo a violent reaction if combined with each other.Conventionally, alkali metals and halogens react violently.
More specifically; Caesium and Flourine react most violently because they are highly reactive members of the Alkali metals and halogens group respectively.
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What kind of technology helps us locate likely places to find fossils?
Answer:
Artificial Intelligence has helped us find fossils faster than ever. Before this technology, finding fossils was based on luck although scientists could make an educated guess. These robots are called paleobots. These robots use various techniques like scanning the location and some robots can also help with excavation.
Answer:
NASA technology, Remote Sensing, the search can be narrowed. Remote sensing techniques use satellites to help observe and measure objects from a distance. One part of remote sensing involves taking pictures. With images like the ones from NASA's LandSat Satellites, paleontologists use remote sensing to locate areas in the Gobi where fossils are most likely to be found. LandSat sensors measure different wavelengths of reflected sunlight and emitted thermal radiation. The data are beamed back to Earth, where they can be made into images. Paleontologists analyze these images, looking for rock formations most likely to yield fossils.
Explanation:
Check all of the boxes that are true about the electron:
it is outside the nucleus
it has a positive charge
it has no mass
it has a negative charge
it is inside the nucleus
it is the same as the atomic number
it is the same as the number of neutrons
Answer:
1,4,6,7
Explanation:
Electrons have a negitive charge and are outside of the nucleus and have the same atomic number and have the same number os nutrons.
pavitar has a big cup which can hold 9/10 of total seeds . he is trying to fill it with a small cup which can hold 3/10 of total seeds how many full of small cups are required to fill the bigger cup
Answer:
3 small cups
Explanation:
The correct answer would be 3 small cups.
The big cup can hold 9/10 of the total seeds.
The small cup can hold 3/10 of the total seeds.
3 of the small cup would be equivalent to the big cup such that:
3 x 3/10 = 9/10
Hence, 3 small cups = 1 bigger cup.
How many liters of chlorine gas are present if you have 5 moles of Cl2 at STP?
Answer:
Explanation:
One mole of any gas at STP takes up 22.4 L
1 mole of gas = 22.4L
2.5 moles of gas takes up = ( 22.4 L/ 1 mole ) x 2.5 mole
= 56 L
What is the chemical name for the compound Sb2O5 ?
Answer: Antimony pentoxide
Hope this helps :)
4. Why is radiocarbon measurement useless when trying to measure things that died
longer than 200,000 years ago?
Answer:
Radiocarbon measurement or radiocarbon dating is a method that is used to measure the age of the carbon-based material in living organisms.
Radiocarbon dating is able to estimate age of fossils that are younger than 50,000 years and unable to measure things that died longer than 200,000 years ago because fossils that are too old do not contain carbon or carbon get vanished from too old fossils of organisms. Some of the fossils also get contaminated due to environmental conditions and during teh collection or preservation process.
Thus, radiocarbon measurement is useless when trying to measure most rocks older than 50,000 years.
You have 500 g of water in a bottle. How many molecules of water do you have?
Answer:
167.28×10^23
Explanation:
500 ml of water weighs 500 gm.
Molecular weight of water =18 gm
So, number of moles in 500 gm of water=500/18=27.78
Number of molecules= number of moles × Avogadro's number=27.78×6.022×10^23=167.28×10^23
So, there are 167.28×10^23 molecules in 500 ml of water
The ability of a substance to dissolve in another is called
Answer: Solubility
Explanation:
Answer:
Solubility i believe
Explanation:
Gaseous hydrogen and oxygen can be prepared in the laboratory from the decomposition of gaseous water.
The equation for the reaction is
2H2O(g)⟶2H2(g)+O2(g)
Calculate how many grams of O2(g) can be produced from 58.9 g H2O(g).
Answer:
Mass of oxygen = 52.32 g
Explanation:
Given data:
Mass of water = 58.9 g
Mass of oxygen produced = ?
Solution:
Chemical equation:
2H₂O → 2H₂ + O₂
Number of moles of water:
Number of moles = mass/ molar mass
Number of moles = 58.9 g/ 18 g/mol
Number of moles = 3.27 mol
Now we will compare the moles of water with oxygen from balance chemical equation.
H₂O : O₂
2 : 1
3.27 : 1/2×3.27 = 1.635 mol
Mass of oxygen produced:
Mass = number of moles × molar mass
Mass = 1.635 mol × 32 g/mol
Mass = 52.32 g
Table salt is 40% sodium by mass. What is true about all sodium chloride?
A. The mass of sodium is sometimes 30% by mass.
B. Not all sodium chloride will contain 40% sodium by mass.
C. All sodium chloride will contain 40% sodium by mass.
D. The ratio of sodium to chlorine in sodium chloride will vary.
Answer:
C. All sodium chloride will contain 40% sodium by mass.
Explanation:
It is definitely true that all sodium chloride will contain 40% sodium by mass. Table salt is the common name of sodium chloride which is the chemical name.
The formula is designated as NaCl.
According to the Law of constant composition or definite proportions; "all pure samples of the same compound contain the same proportions of the elements by mass".
This implies that every time a particular compound forms, it forms in the same percentage composition. It forms in the same percentage composition.
So, we see that all sodium chloride will contain 40% sodium by mass.
Option A, B and D are in contradiction with the law of constant composition.
Aluminum has a density of 2.70g/cm what is the volume occupied by a block of aluminum which weights 4.32kg
Answer:
Explanation:
0.000625 cm3
0.625 cm3
1.60 cm3
Whta is the answer and how do you know the answer
Answer:
Ne (Neon)
Explanation:
Since the electrons of the image are 2-8, totaling 10, with no indication that the atom is charged, the electrons and protrons must cancel out, meaning that the element has 10 protons and is thus neon
Is the following equation balanced? P + 3O₂ ----> 2P₂O₃
Answer:
4P+ 3(O2)= 2(P2O3)
Explanation:
Need to add 4 infront of P on left hand side to balance number of atoms on both sides
write the balanced redox reaction equation?
Answer:
see the image below
Explanation:
oxidation is losing of electrons
reduction is gaining of electrons
Which of these molecules is an important source of ENERGY for most organisms?
Question 2 options:
glycogen
table salt NaCl
hydrochloric acid
glucose
Answer:
Glucose
Explanation:
Glucose molecule is the primary source of energy for most organisms where processes such as glycolysis starts and cellular respiration follows. Bodies of organisms can get energy from carbohydrates, proteins and fats with carbohydrates being the main component for energy where they are converted to glucose which is a form of sugar that reacts to affect blood sugar levels within an hour or two hours after eating.
The second answer option, table salt (NaCl) is incorrect because sodium added in food is vital for functioning of nerves and muscles. Additionally, it helps in fluid regulation and control of blood pressure/volume in the body.
The third answer , hydrochloric acid is not correct because presence of hydrochloric acid in the body helps in breaking down, digestion and absorption of nutrients.
The correct answer choices are : A and D.
Three quantum numbers for an electron in a hydrogen atom in a certain state are
n = 4, e = 1, me = 1. The electron is located in what type of orbital?
a)4p
b)3p
c)4s
d)4d
The electron will be located in is 4p in a hydrogen atom..
Given:
Three quantum numbers for an electron in a hydrogen atom in a certain state:
n = 4, l=1, [tex]m_l=1[/tex]
To find:
The location of an electron.
Solution:
The principal quantum number is given by n. It tells the energy level or orbit in which the electron is residing.Angular momentum quantum number is given by l. It is the shape of an orbital in an orbit in which an electron is found. Each value of 'l' corresponds to the definite shape of an orbital.The magnetic quantum number is given by [tex]m_l[/tex]. It tells us the orientation of the orbital in which electron is presentThe principal quantum number, n = 4
The angular momentum quantum number = l = 1 = p-orbital
The magnetic quantum number = [tex]m_l[/tex] = -l to +l = -l , 0, +1
The electron will be located in is 4p in a hydrogen atom.
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is coffee and water a heterogeneous?
Answer:
It is homogeneous
Explanation:
