Answer: Protons
Explanation: The nucleus contains two types of subatomic particles, protons, and neutrons. The protons have a positive electrical charge and the neutrons have no electrical charge.
Consider the following chemical reaction at equilibrium. H2SO4(aq) Double headed arrow. 2H (aq) SO42–(aq) The addition of which compound will cause a shift in equilibrium because of a common ion effect? NaCl KNO3 MgSO4 FeCl3.
The compound that has been able to produce the ion common to the product has been Magnesium sulfate. Thus, option C is correct.
The common ion effect has been observed when the addition of a molecule to the solution results in the dissociation of ions that are the same as the product or reactant.
These ions are responsible for the shift in the equilibrium for a chemical reaction.
Which compound cause Common ion effect?The equilibrium has been the condition when the number of ions of each product and reactant has been equal on the product and the reactant side.
The addition of compounds with products ions results in the shift of equilibrium towards left. The addition of compounds with reactant ions results in the shift in the equilibrium towards right.
The given chemical equation has been:
[tex]\rm H_2SO_4\;\leftrightharpoons\;2\;H^+\;+\;SO_4^2^-[/tex]
The ions dissociated by the following compounds has been:
[tex]\rm NaCl\;\rightarrow\;Na^+\;+\;Cl^-[/tex][tex]\rm KNO_3\;\rightarrow\;K^+\;+\;NO_3^-[/tex][tex]\rm MgSO_4\;\rightarrow\;Mg^2^+\;+\;SO_4^2^-[/tex][tex]\rm FeCl_3\;\rightarrow\;Fe^3^+\;+\;3\;Cl^-[/tex]The compound that has been able to produce the ion common to the product has been Magnesium sulfate. It has been able to increase the concentration of the product and shift the equilibrium towards the left.
Thus, option C is correct.
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Answer:
C. MgSO4
Explanation:
I took the test
WILL GIVE BRAINLIEST:what is the empirical formula for 32.38%Na, 22.65% S, 44.99% O
Answer:
Hello! The empirical formula of Na=32.38%, S=22.65%, O=44.99% is Na2O4S (sodium sulfate). In chemistry, the empirical formula of a chemical compound is the simplest whole number ratio of atoms present in a compound.
Have a great day!
Manganese(II) iodide decomposes when
exposed to light to form manganese and
iodine. Write an equation for this reaction.
The reaction for the decomposition of Manganese(II) iodide when exposed to light to form manganese and iodine is MnI2 → Mn + I2.
THE DECOMPOSITION OF MANGANESE (II) OXIDE:Manganese II iodide has the chemical formula of MnI2. Manganese II iodide can be decomposed in the presence of light to form manganese and iodine. The balanced chemical equation of the decomposition is as follows:MnI2 → Mn + I2
Therefore, the reaction for the decomposition of Manganese(II) iodide when exposed to light to form manganese and iodine is MnI2 → Mn + I2.
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When a rain forest is slashed and burned, the local concentration of carbon dioxide in the atmosphere increases. This is primarily due to.
The local concentration of carbon dioxide in the atmosphere increases when rainforest is slashed and burned because there is less vegetation to use CO2 for photosynthesis.
WHAT IS PHOTOSYNTHESIS:Photosynthesis is the process whereby green plants obtain their food (glucose) using energy from sunlight. Green plants in an ecosystem absorb carbon dioxide (CO2) from the atmosphere as one of the reactants of photosynthesis.Therefore, this means that the local concentration of carbon dioxide in the atmosphere increases when rainforest is slashed and burned because there is less vegetation to use CO2 for photosynthesis.
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List science of kinesiology that interest you? Why there science interest you
Answer:
The study of the human body as a machine for the performance of work has its foundations in three major areas of study—namely, mechanics, anatomy, and physiology; more specifically, biomechanics, musculoskeletal anatomy, and neuromuscular physiology. Explanation:
True or false? Eye protection is not usually necessary when performing a titration because the solutions used are very dilute.
. Explain the composition of the earth.
Answer: The earth is made up of three different layers: the crust, the mantle and the core. This is the outside layer of the earth and is made of solid rock.
Explanation: hope this helps.
Imagine that you fill a bucket to the top with water and then place the bucket outside in freezing weather. Which of the following describes what will happen when the water in the bucket freezes?
Answer:
, the sides of the bucket will be pushed out and above a rim, just like when you put a water bottle in a freezer for 24 hours, the sides will be pushed out.
Explanation:
this is the answer I found online so I hope it's right :,)
Write a balanced net ionic equation for the reactions represented by each of the
following unbalanced molecular equations:
Na3PO4(aq) + Fe(NO3)3(aq) NaNO3(aq) + FePO4(s)
HELPPP MEEEEE!!!POR FAVOR
Answer:
A.
Explanation:
hope it helps...
( Brainliest + thanks! )
The ocean is made mostly of:
A) Carbon and oxygen
B) Hydrogen and carbon
C) Calcium and nitrogen
D) Hydrogen and oxygen
Answer: The ocean is made mostly of: D) Hydrogen and oxygen.
Explanation: The most abundant elements in the ocean by proportion of mass in percent are oxygen (85.84%), hydrogen (10.82%), chlorine (1.94%), sodium (1.08%), magnesium (0.13%), sulfur (0.09%), calcium (0.04%), potassium (0.04%), bromine (0.007%), carbon (0.003%), and boron (0.0004%).
Hope this helped!
ASAPPP!!!
C3H3(g) + 5 O2 (g) + 3 CO2 (g)+ 4 H20 (g)
What volume of oxygen is required to completely combust 0.632L of propane (C3H8) at STP?
Answer:
3.16 liters O2
Explanation:
I'll assume the C3H3 is really supposed to read C3H8, for propane.
C3H3(g) + 5 O2 (g) + 3 CO2 (g)+ 4 H20 (g)
C3H8(g) + 5 O2 (g) + 3 CO2 (g)+ 4 H20 (g)
It is unlikely that all the gases involved in this reaction will remain at STP due to the large amount of energy released, we'll assume STP since:
1) We are told STP and no other information is given, and
2) STP makes the problem much easier, since all gasses occupy 22.4 liters per mole of that gas.
The balanced equation tells us we need 5 moles of O2 for every 1 mole of C3H3: a molar ratio of 5/1 (moles O2/moles C3H8).
Calculate moles C3H8 in 0.632 liters of the stuff [metric term for compound]:
(0.632 liters)/(22.4 liters/mole) = 0.0282 moles C3H8
This means we'll need 5 times that number for the amount of O2 required. That comes to 0.1411 moles O2.
Convert that to volume: (0.1411 moles O2)*(22.4 liter/mole) = 3.16 liters O2
Fe2O3 + 3 H2 → Fe + 3 H2O
is it balance?
Answer:
Yes it is in balance form.
explain how to determine the number of atoms, cations, and anions in ionic compounds. use an example to explain.
Answer:
use coefficients and subscripts to determine how many atoms are in a compound. If there is no subscript or coefficient, assume it is 1. If there is a coefficient, multiply it with the subscripts. For counting cations and anions, determine first which is the anion and cation (anion = nonmetal, cation = metal), then count the number of that ion.
Example:
NaCl
one atom of Na, one atom of Cl. Since Na is a metal, it is a cation. Cl is a nonmetal, so it is an anion.
2CaCl2
2 atoms of Ca, 4 atoms of Cl. There are 2 cations, since Na is a metal, and 4 anions since Cl is a nonmetal
Types of chemical reactions!!!!!!
This will be a single replacement as the cations switched places: barium going with chlorine while hydrogen goes by itself.
Another indicator is that in your reactants, you have an element and a compound.
Which dilution of hydrogen peroxide would not be considered a broad spectrum and sporicidal disinfectant?.
Answer: .5
Explanation:
The dilution of less than 6% of hydrogen peroxide would not be considered a broad spectrum and sporicidal disinfectant. Dilution of>15 % is considered to be suitable concentration for sporicidal disinfectant.
What is hydrogen peroxide?Hydrogen peroxide, H₂O₂ is covalent compound formed by the combination of hydrogen and oxygen atoms. It is an oxidizing agent and have a significant industrial value due its disinfectant property.
A 30% aqueous solution of hydrogen peroxide can be bought and diluted to a usable solution. However, it should be noted that hydrogen peroxide alone in diluted solutions of less than 6% is a slow and ineffective germicide.
Hydrogen peroxide works well against bacteria, viruses, and fungi and is sporicidal at higher doses (>15%). Its effectiveness against mycobacteria is weak. The work surfaces of biosafety cabinets and laboratory benches can be cleaned with hydrogen peroxide.
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A wetland being drained so a housing development can be built is an example of ____________.
A) habitat destruction
B) overexploitation
C) pollution
D) conservation
A wetland being drained so a housing development can be built is an example of habitat destruction.
What is wetland?Wetland is a "place in which the land is covered by water—salt, fresh, or somewhere in between—either seasonally or permanently".
What is habitat destruction?Habitat destruction is "the elimination or alteration of the conditions necessary for animals and plants to survive, not only impacts individual species but the health of the global ecosystem".
What is housing development?Housing development a "group of individual dwellings or apartment houses typically of similar design that are usually built and sold or leased by one management".
Hence, drained wetland to a housing development causes habitat destruction.
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The atoms in nacl are held together by what type of bond?.
Explanation:
Electrovalent bonding
What is the percentage by mass of Na2H4.
Explanation:
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137%
A student noticed that when he charged a balloon, it was attracted to the wall. He tried to put another charged balloon on the wall close to the other balloon, but it would not stick. What is the best explanation as to why this happened?
Group of answer choices
A: The charged balloon that was already on the wall did not attract the balloon, and it fell.
B:There were too few remaining positive charges in the room to transfer to the second balloon.
C:When the second balloon was placed close to the first balloon, the charge of that balloon repelled it.
D :When the second balloon was placed on the wall, it took on the charge of the wall.
Answer:
C
Explanation:
The two balloons both had the same charge, the charge being either a positive or a negative charge, causing them to repel one another. When you look at two magnets
Answer:
the answer is cExplanation:
When the second balloon was placed close to the first balloon, the charge of that balloon repelled it.1.As per the Aufbau principle, which of the following orbitals have the lowest energy?
(1 Point)
1s
2s
2p
3s
2.As per the Aufbau principle, which of the following orbitals have the lowest energy?
(1 Point)
3p
4s
2p
3s
3.As per the Aufbau principle, which of the following orbitals have the lowest energy?
(1 Point)
3p
3d
3s
4s
4.As per the Aufbau principle, which of the following orbitals have the greatest energy?
(1 Point)
3p
3d
3s
5s
5.As per the Aufbau principle, which of the following orbitals have the greatest energy?
(1 Point)
3p
4s
3d
3s
The correct answer attached in file, Thank you for joining brainly community.
What is the name of scientist who discovered the arrangement of the periodic table?.
Answer:
Dmitry Ivanovich Mendeleyev Russian chemist
How can you use the symbols in a chemical equation to determine if a change is either a chemical or physical change
Answer:
if the symbols in a chemical equation are arranged differently on the product side than they are on the reactant side, it is a chemical change because the substances have undergone chemical change
Please help me ! chemistry question
When doing a mass to mole problem, it's similar to a mass to mass problem but with less steps.
1) convert mass to moles.
You will take the mass you are given and divided it by its molar mass, or in this case, the molar mass of the known and you should be left with moles of known substance.
2) convert moles to moles of the other substance.
You would then use the mole of the known substance and use the molar ratio in your balanced chemical equation to find the moles of the other substance. REMEMBER: the moles of the unknown substance goes on the top of the fraction while the moles of the known substance goes on the bottom.
Example:
When 30g of [tex]H_{2}O[/tex] is reacted with [tex]CaC_{2}[/tex], how many moles of [tex]Ca(OH)_{2}[/tex] is formed?
[tex]CaC_{2}\ +\ 2\ H_{2}O\ -->\ C_{2}H_{2}\ +\ Ca(OH)_{2}[/tex]
[tex]= 30g\ H_{2}O\ x\ \frac{1\ mol\ H_{2}O}{18.02g\ H_{2}O}\ x\ \frac{1\ mol\ Ca(OH)_{2}}{2\ mol\ H_{2}O}\\\\=0.83\ mol\ Ca(OH)_{2}[/tex]
How much energy is required to convert 400 g of ice at 0 °C to liquid water at 0 °C?
Answer:
133.20 kJ
Explanation:
The heat of fusion for water is 3.33 x 10^5 J/kg.
(400g)*(1 kg/1000g)*(3.33 x 10^5 J/kg) = 133200 J, or 133.20 kJ for 400g
The specific heat of copper metal is 0. 385 J/(g °C). How much energy must be added to a 35. 0-gram sample of copper to change the temperature from 20. 0 °C to 65. 0 °C? 270 J 606 J 809 J 1,130 J.
The amount of heat required for changing the temperature of copper has been 606 J. Thus, option B is correct.
Specific heat has been defined as the amount of heat required to raise the temperature of 1 gram of substance by 1 degree Celsius.
The heat required to raise the temperature has been expressed as:
[tex]\rm Heat=mass\;\times\;specific\;heat\;\times\;Change\;in\;temperature[/tex]
Computation for the heat energy requiredThe given specific heat of copper has been [tex]\rm 0.385\;J/g^\circ C[/tex]
The mass of copper has been, [tex]\rm 35\;g[/tex]
The initial temperature of copper has been, [tex]\rm 20^\circ C[/tex]
The final temperature of copper has been, [tex]\rm 65^\circ C[/tex]
The change in temperature has been, [tex]\Delta T[/tex]
[tex]\Delta T=\text{Final\;temperature-Initial\;temperature}\\\Delta T =65^\circ \text C-20^\circ \text C\\\Delta T=45^\circ \text C[/tex]
Substituting the values for the heat required as:
[tex]\rm Heat=35\;g\;\times\;0.385\;J/g^\circ C\;\times\;45^\circ C\\Heat=606\;J[/tex]
The amount of heat required for changing the temperature of copper has been 606 J. Thus, option B is correct.
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When zinc reacts with hydrochloric acid, it produces hydrogen gas. As the reaction proceeds, why does the rate of production of hydrogen gas decrease?
The concentration of hydrogen gas decreases.
The concentration of the reactants decreases.
The hydrogen gas formed inhibits the reaction.
The hydrogen gas also reacts with the zinc metal.
Answer:
a the concentration of hydrogen gas decreases
Explanation:
Zn +HCl ---) ZnCl +H evolves
4. Which atom will form an anion when forming an ionic bond?
b. Li
d. O
a. Sr
C. Ca
Explain two different ways to arrive at this answer:
Answer:
Oxygen
Explanation:
Oxygen has 6 valence electrons and it wants to have 8 to obtain a stable octet. So Oxygen gains two electrons in the bond, developing an anion.
It is also a non-metal, and they tend to gain anions.
Any species that contain negative charge over it called anion. Out of Lithium, oxygen, strontium and calcium, oxygen is the only element that can form anion. So option D is correct option.
What are non metals?Non metals are the element that have property to gain electron. When any element gain electron then element attain negative charge and that element is called anion. Non metals lie on the right side of the periodic table. Non metals have high electronegativity that is why they have the ability to attract the electron efficiently.
In our question strontium, calcium and lithium belongs to metals category and these lie on the left side of the periodic table. Metals are meant to release electron and hence become cation.
Thus the only element that is non metal here is Oxygen that forms anion. Its oxidation state is -2. Thus option b is correct option
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2.3 x 10²¹ particles H = __________ mol H (round to the nearest thousandth)
Taking into account the definition of avogadro's number, 3.82×10⁻³ moles of H are 2.3×10²¹ particles of H.
Avogadro's Number
Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.
This caseThen you can apply the following rule of three: if 6.023×10²³ particles are contained in 1 mole of H, then 2.3×10²¹ particles are contained in how many moles of H?
amount of moles of H= (2.3×10²¹ particles × 1 mole)÷ 6.023×10²³ particles
amount of moles of H= 3.82×10⁻³ moles
Finally, 3.82×10⁻³ moles of H are 2.3×10²¹ particles of H.
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If red is red then why are diamonds rainbow
Answer:
they are lesbian diamonds
Explanation:
see now if u did not know the mathematical side of this is actually l+g+b+t+q= rainbow and being it is a diamond and the width and area is 74 to 90 that would be lesbian in pie. I hope that helps!
