Why does the forward reaction slow down over time
Answers
The forward reaction slows down over time due to the fact that the concentrations of reactants gets lower over time which makes it so that there are less collisions between reactants per unit of time. Since reactions occur when the reactants collide in the right way, when the number of collisions lowers, the rate of the reaction will also lower. This can be seen through the fact that rate of the forward reaction is rate=k[reactants]. As [reactants] gets lower, the rate of the forward reaction will get lower as well. (rate=k[reactants] is the rate law for the forward reaction with [reactants] being the concentration of reactants and k being the rate constant).
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Related Questions
sodium chloride and glucose both are soluble in water but the solubility of NaCl is greater then glucose why.
The change in heat energy for a reaction is best expressed as a change in a. Enthalpy (H) b. Absolute temperature (T) c. Specific heat (c) d. Entropy (S) e. Kinetic energy (KE)
If the sun ran out of energy what would happen to the energy resources on earth
Hydrogen chloride, HCl, is classified as an Arrhenius acid because it produces(1) H+ ions in aqueous solution(2) Cl– ions in aqueous solution(3) OH– ions in aqueous solution(4) NH4+ ions in aqueous solution
Answers
Answer: The correct answer is Image 3.
Explanation:
Lewis dot structure is defined as the structure which represents the number of valence electrons around the atom. The electrons are represented as dots.
From the structure, we can easily determine the number of bonding and non-bonding electrons. Non-bonding electrons are considered as lone pair of electrons.
Carbon is the 6th element of the periodic table having electronic configuration of
This element has 4 valence electrons.
Chlorine is the 17th element of the periodic table having electronic configuration of
This element has 7 valence electrons.
The lewis dot structure for the compound is given below in the image attached.
Hence, the correct answer is Image 3.
2. It is wrong because carbon only has four valence electrons
3. It is correct because each chlorine has 3 lone pairs and carbon has 4 electrons covalently bonded with chlorine
4. It is wrong because chlorine only has 7 valence electrons and therefore it cannot have 3 lone pairs and 2 bond pairs for each of C-Cl bonds
river’s slope
c.
streambed shape
b.
volume of flow
d.
all of the above
Answers
Answer: d.
all of the above
Explanation:
A river load can be define as the debris or sediments carried away by the stream of river water. The materials which are translocated includes the rocks, stones and other large particles. Generally, the finer particles floats over the water surface. River slope, shape of the stream bed and volume of flow of water all are the factors which can affect the river load.
River slope will cause the erosion of surface materials by using water. Shape of the stream bed is also a factor this is because of the fact that the wider the surface covered by water more erosion can be caused. If the volume of water flowing in the stream is high the water will take away the particles by causing friction over the surface.
Answers
Answer:
Helium will be inert. Lithium is the most reactive element, followed by chlorine.
Explanation:
The elements tend to resemble the closest noble gases in terms of their electronic configuration of the last layer, that is, having eight electrons in the last layer to be stable. Then, the reactivity of an element measures the tendency to combine with others to generate the mentioned stability.
Within a period, the groups located on the left of the periodic table are more reactive than groups on the right. This is because it is easier to lose the electron of the last layer possessed by the elements located on the left than more than one electron in the rest of the elements. When we reach a certain group the trend is reversed since it will be easier to gain the missing electrons to resemble the nearest noble gas. Therefore, in a period the reactivity of metals increases the further to the left in the period (less electrons to remove). The reactivity of nonmetals increases as the period progresses since it is the case in which it is easier to acquire electrons to acquire stability, and increases to advance in a period since the less electrons they need to acquire, the more reactants they are.
Within a group, as we descend into it, the electrons of the last layer are farther from the nucleus and, therefore, it will be easier to remove them. In the case of nonmetals, it will be more difficult to take electrons. Then the reactivity of the metals increases when advancing in a group (greater tendency to lose electrons) and the reactivity of the nonmetals increases the higher in the group (greater tendency to take electrons).
Finally, you have noble or inert gases. Its inert name is due to the lack of reactivity with other elements. This is due to its electronic configuration, because its outermost layer or valence layer is always complete, without the need to share, transfer or receive electrons forming bonds. That is, its outer layer is so stable that the element tends not to react with others except in very specific cases.
Taking into account everything mentioned above, it is possible to say that helium is a noble gas, so it will be inert. Lithium is the most reactive element, followed by chlorine.
Answers
Answer: chlorine gas
Explanation:
mass = 0.508 g volume = 0.175 L
From ideal gas equation.
PV = nRT
(1.0 atm) × (0.175 L) = n × [0.0821 atm L / (mol K)] × [(273.2 + 25.0) K]
n = 1.0 × 0.175 / (0.0821 × 298.2) mol
n = 0.00715 mol
Molarmass= mass/mole
Molar mass of the gas = (0.508 g) / (0.00715 mol) = 71.0 g/mol
The molar mass of Cl₂ (chorine) = 35.5 × 2 g/mol = 71.0 g/mol
Hence, the gas is chlorine.
6CO2 + 6H2O --> C6H12O6 +602
1. Identify evidence that a chemical reaction has occurred.
2. What element is the most abundant in this chemical reaction?
3. Identify the number of protons, neutrons, and electrons found in the most
abundant element.
4. Identify where we would find the protons, neutrons, and electrons in the
atom of this element.
5. Identify the group and period of the element on the Periodic Table.
swer
Answers
Answer:
1. The evidence that chemical reaction has occurred can be found in the change of the reagents present after the reaction, that is formation of glucose in the area where the reaction is taking place
2. The most abundant element of the chemical reaction is oxygen which has a total quantity of 18 atoms in the reaction
3. The oxygen atom has an atomic number of 8 and therefore contains 8 protons and 8 neutrons and (therefore) 8 electrons (to be neutral, electronically)
4. The protons and the neutrons of the atom, oxygen, are located in the nucleus, while the electron are found in the different orbitals surrounding the atom
5. The element, oxygen, symbol, O, belongs to the group 16 of period 2 in the periodic table
Explanation:
b. larger urban heat islands
c. poor public health
d. a greater support capacity
Answers
A lack of sewage structures in overcrowded cities may lead to poor public health. Therefore, the correct option is C.
A sewage system, also known as a wastewater management system, is a system of pipes, pumping stations, and other accessories used to transport sewage from points of origin to points of treatment and disposal.
Combination sewers are systems that transport sewage from both domestic and storm sources. Due of the significant amounts of storm water that must be transported during wet weather conditions, combined sewers usually are made up of big pipes or tunnels. Public health may suffer in densely populated cities with inadequate sewage systems.
Learn more about sewage system, here:
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