Coordination isomerism in compounds containing both anionic and cationic complexes can be considered to occur by the exchange of some of the ligands from cationic to anionic moieties. Therefore, there are two complex compounds bonded together, one with a negative charge and the other with a positive charge.
Explanation of coordination isomerismIn coordination isomers, the anion and cation complexes of the coordination compound exchange one or more ligands. For example, the compounds [Co(NH3)6] [Cr(C2O4)3] and [Co(C2O4)3] [Cr(NH3)6] are coordination isomers.
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Which of these statements is justification for the following conclusion: “Right now, there is no way to avoid making pollution when making photovoltaic panels.”
Answer: 1.Think of the English alphabet. Millions of words can be made from only 26 letters! The same thing is true of elements and compounds. Elements are the basic form of matter which cannot be broken down any further. A few common elements make most of the planet’s many compounds. Different compounds combine to make all of the things around us. These include rocks, air, water, and even people.2 Let’s take a trip to Maui in the Hawaiian Islands. You must cross the Pacifi c Ocean. You travel over seawater made of hydrogen, oxygen, sodium, chlorine, and traces of other elements. Pure water has only hydrogen and oxygen. When you get to the island, you walk on the sand. Sand is tiny bits of worn-out rock mostly made of oxygen and silicon. A breeze hits your face. The air is made of nitrogen, oxygen, a little argon, and carbon dioxide. There are also very small amounts of other gases. 3 As you walk around, you see volcanic rocks and mountains on the island. They are made of mixtures of oxygen and silicon, with magnesium, aluminum, potassium, iron, and small amounts of other elements. Green volcanic rock is also common on the island. It has a heavy concentration of iron and magnesium. 4 You also see all the plants and animals. The Hawaiian Islands contain much diversity. You see many beautiful trees, bushes, and fl owers. You see a Hawaiian tree, an orchid on that tree, a beetle crawling on the ground, and a native Hawaiian. These are all examples of living matter made of the elements hydrogen, oxygen, carbon, and nitrogen. Hydrogen is the most abundant element in living matter. 5 As you leave Hawaii, you marvel at what you’ve seen. You are amazed at how so many compounds can be made from so few elements. A few simple elements can combine to make many, many different things.
Explanation:
A robot spacecraft returned samples from the planetesimal 98765 aleks, located in the outer solar system. Mass-spectroscopic analysis produced the following data on the isotopes of ruthenium in these samples: isotope mass (amu) relative abundance use these measurements to complete the entry for ruthenium in the periodic table that would be used on 98765 aleks. Round your entry for the atomic mass to significant digits. Caution: your correct answer will have the same format but not necessarily the same numbers as the entry for ruthenium in the periodic table we use here on earth.
Atomic elements with the same proton number are called isotopes. Ru will have an atomic number of 44 and a mass of 100.9 according to the periodic table.
What are atomic weight and number?The number of protons in an atom's nucleus is indicated by its atomic number. The total number of protons and neutrons in an atom makes up the atomic mass.
The atomic number, which is the total amount of protons for a certain element throughout all locations or planets, is constant. Ruthenium will therefore have an atomic number of 44.
The relative abundance determines the atomic mass, which is determined as follows:
Atomic mass = [tex]\sum[/tex] (relative abundance × atomic mass) of each isotope
Atomic mass = (96% × 100.91) +(4% × 101.90)
Atomic mass = 100.9%
Ru's atomic mass is therefore 100.9 and its atomic number is 44.
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Edit 0 3. Predict When Mendeleev developed the periodic table, the element gallium had not yet been discovered. Without looking at the periodic table on this page, examine the elements surrounding gallium in the diagram below, and predict the atomic number and atomic mass for this element. How does your prediction match the actual atomic number and atomic mass for gallium on the periodic table? NOTEBOOK
Mendeleev developed the periodic table, the element gallium had not yet been discovered because gallium has known biological value
There is a very close match lies between the gallium actual property and the properties that were predicted and this has helped a lot in gaining a wider acceptance periodic table of Mendeleev and he left blank spaces for the undiscovered element atomic masses 44 scandium 68 gallium 72 germanium and 100 techtanium and so certain element can be grouped together
The element has no known biological value and in nature gallium is never found as a free element and cannot be found in substantial amount in any minerals and the element which were unknown when Mendeleev gave his classification were geranium gallium and scandium and he left gap for the unknown element and gallium has the atomic number is 31 and atomic mass is 69.72
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subatomic particles can usually pass undeflected through an atom because the volume of an atom is composed of
Subatomic particles can usually pass un deflected through an atom because the volume of an atom is composed of largely empty space.
The subatomic particle are the particles that are inside an atom. the subatomic particles are : protons , neutrons and the electrons. the protons and the neutrons both together form the nucleus of atom and are called nucleons. protons are the positively charged. for an neutral atom number of proton is equal to the number of proton. the electrons are the subatomic particle that revolves around the nucleus.
Thus, Subatomic particles can usually pass un deflected through an atom because the volume of an atom is composed of largely empty space.
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at a certain temperature and pressure 5.6 l of n2 reacts with 8.4 l of o2. if all the n2 and o2 are consumed, what volume of n2o3, at the same temperature and pressure, will be produced?
The volume of N2O3 produced is 5.6 L.
What is Ideal gas law ?
The ideal gas law (also called the perfect gas law), the relationship between the pressure P, volume V, and temperature T of a gas in the boundary region between low pressure and high temperature. Gas molecules move almost independently. each other. In such cases, all gases obey an equation of state known as the ideal gas law:
PV = nRT, where n is the number of moles of gas, R is the universal (or complete) gas constant, 8.31446261815324 Joules/ Kelvin/Kelvin (The universal gas constant is defined as Avogadro's number NA multiplied by Boltzmann's constant k.) In the International System of Units, energy is joules, volume is cubic meters (m3), force is newtons (N), and pascals Pressure in (Pa), where 1Pa = 1N/m2. A force of 1 Newton moving a distance of 1 meter does 1 Joule of work. Therefore, the product of both PV and nRT has the dimension of work (energy).
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the half-life of radioactive radium is about 1600 years. what percent of a present amount of radioactive radium will remain after years?
The percent of a present amount of radioactive radium after 100 years is 95.76%
Radium:
Radium is a chemical element with the symbol Ra. It is the sixth element in the Group 2 of the periodic table. Pure radium is silvery-white in color, but it combines with nitrogen readily on exposure to air and forms a black surface layer of radium nitride.
Here we have to find the percent of the present amount of radioactive radium remains after 100 years.
As we know:
y = a[tex]e^{-bt}[/tex]
y = a (at t =0)
as half-life:
0.5a = a[tex]e^{1600b}[/tex]
ln 0.5 = -1699b
b = -log 0.5/ 1600
Now model is:
y = a[tex]e^{log 0.5/1600 t}[/tex][tex]e^{log 0.5 / 1600 t}[/tex]
at t = 100
y = 0.95768
So there will be 95.76% radioactive radium after 100 years.
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At which labeled points would the skateboarder have the most kinetic energy? w and x x and y y and z w and z
The skateboarder will have the most kinetic energy at point X and Y.
The energy an object possesses as a result of its motion is known as kinetic energy. With a decrease in object speed, the kinetic energy drops.
K.E = ¹/₂mv²
The skateboard will be moving at its fastest at points X and Y in the following diagram. Speed and kinetic energy are inversely correlated.
The skateboarder will therefore have the greatest kinetic energy at points X and Y, we can deduce.
The energy an object has as a result of motion is known as kinetic energy. A force must be applied to an object in order to accelerate it. We must put in effort in order to apply a force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed.
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Answer:
X and Y
Explanation:
Edge said so
100 grams of ice at 0 °c is placed in 500 grams of water at 50 °c. What is the final temperature and composition of the mixture?.
The final temperature of the mixture is -9.1°C.
Principle of a Calorimeter.Higher body temperatures release heat while lower body temperatures absorb it. The law of conservation of energy is demonstrated by the calorimetric principle, which states that the total amount of heat lost by a hot body is equal to the total amount of heat gained by a cold body.
Here,
Mass of water [tex]m_{w}[/tex] =500g
Mass of ice [tex]m_{i}[/tex] = 100g
Specific heat of water = 1 cal g⁻¹°c⁻¹
Specific heat of ice = 80 °cal g⁻¹
Let T represent the mixture's final temperature.
How much heat water loses
[tex]m_{w} s_{w}[/tex](∆T)w = 500×1(50-T)
Amount of heat that ice absorbs
[tex]m_{i} L_{fi}[/tex]+[tex]m_{i} s_{w}[/tex](∆T)i = 100×80×100×1(T-0)
In accordance with the calorimetry principle:
Heat gained minus Heat Lost
500×1(50-T) = 100×80+100×1(T-0)
500(50-T) = 8000+100T
2500-500T = 8000+100T
2500-8000 = 100T+500T
-5500 =600T
T = -5500/600
T = -9.1°C.
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calculate the average atomic mass of copper if 69.15 of naturally occuring copper is cu-63 and 30.85 is cu 65
if you drink 6 fluid ounces of water that contain 45ppm of nitrate, what mass of nitrate ions are you consuming?
The mass of nitrate ions one consume when drank 6 fluid ounces of water that contain 45 ppm of nitrate is 8.2 mg.
What is ppm and what mass of nitrate ions is one consuming when drinking 6 fluid ounces of water containing 45 ppm of nitrate?PPM is the abbreviation of parts per million is a measure of mass of the substance per unit volume .Here is given one is taking 6 fluid ounces of water and that water containing 45 ppm of nitrate.The question asked for the mass of nitrate ions one is consuming by consuming 6 fluid ounces of water that contain 45 ppm of nitrate.Volume= 6 fluid ounces x 0.030 = 0.18 L , 0.030 is equivalent to one US fluid ounce.Now calculating the mass , mass of nitrate = 0.18 x 45 /1 = 8.2 mg of mass of nitrate ions.Hence if you drink 6 fluid ounces of water that contain 45 ppm of nitrate then 8.2 mg of nitrate ions you are consuming.To know more about ions visit:
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When each formula unit of potassium carbonate, k 2 c o 3 , dissociates into ions in solution, there.
There are two potassium ions and one carbonate ion in the potassium carbonate formula unit.
Describe the formula unit?The smallest unit in an ionic compound is known as a formula unit. It displays the ion ratio in the molecule. The formula unit for potassium carbonate is K2CO3. We can observe that there are two potassium ions and one carbonate ion in this formula unit.
What is the function of K2CO3 in a reaction?In recent years, potassium carbonate (K2CO3) has been extensively employed as a mild base catalyst in several chemical processes, including Knoevenagel and Nitroaldol Condensation (18), O-alkylation (19), the production of 2H-chromenes (20), and monomethylation reactions (18). (22).
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a 4.26 g sample of he gas has a pressure of 0.123 atm and a volume of 32.6 l. what is the temperature of the sample, in kelvin?
The temperature of the sample, in kelvin, is 0.45 K.
An ideal gas is a theoretical gas composed of many randomly transferring factor particles that aren't difficult to interparticle interactions. the best gasoline idea is beneficial because it obeys the precise gas law, a simplified equation of country, and is amenable to evaluation under statistical mechanics.
An ideal gas is described as one for which both the extent of molecules and forces between the molecules are so small that they have got no effect at the behavior of the gas. The real gas that acts almost like a really perfect gasoline is helium. that is due to the fact helium, in contrast to maximum gases, exists as an unmarried atom, which makes the van der Waals dispersion forces as low as viable
Using the ideal gas equation:-
Given;
P = 0.123 atm
V = 32.6 L
mass =4.26 g
mole = mass/molar mass
= 4.26/4
= 1.07 mole
PV = nRT
T = PV/nR
= 0.123 × 32.6 /1.07 × 8.314
= 0.45 K
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List 5 signs of physical change
Answer:
Common physical changes include melting, change of size, volume, color, density, and crystal form.
Explanation:
Seawater is 3.5% Sodium Chloride by mass. Sea Salt can contain about 10% water. How much water is removed from every Kilogram of Commercial Sea Salt?
The amount of water removed from every kilogram of commercial sea salt would be 27.57 kg.
Dimensional analysisSeawater contains 3.5% sodium chloride by mass. This means every 1 kg of seawater contains 0.035 kg of sodium chloride.
Sea salt contains about 10% water. This means every 1 kg of sea salt contains 0.1 kg of water.
In order to calculate the amount of water removed from every kilogram of commercial sea salt produced, we need to know the amount of seawater that will give 1 kilogram of sea salt.
We said every 1 kg of seawater contains 0.035 kg of salt. How many 0.035 kg can be found in 1kg?
1/0.035 = 28.57
This means 28.57 kg of seawater would need to be processed in order to have 1 kg of salt. Thus, the amount of water removed can be calculated as:
28.57 - 1 = 27.57 kg
In other words, about 27.57 kg of water is removed for every kilogram of commercial salt produced.
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Suppose a solid substance with a mass of 10.0 g is heated in a chemical reaction that produces a different solid substance and a gas, which escapes. Suppose the new solid substance has a mass of 6.5 g. What mass of gas was produced?
The mass of the gaseous product that we obtain is 3.5 g.
What is the law of conservation of mass?We know from the law of the conservation of mass that the total mass of the reactants is equal to the total mass of the products. The meaning of this is that mass is neither created nor destroyed but the mass can be transformed from one form to another.
We have been told in the question that a mass of 10.0 g is heated in a chemical reaction that produces a different solid substance and a gas, which escapes. Suppose the new solid substance has a mass of 6.5 g.
We know that the mass of the products is equal to the mass of the reactants and having known that we can write;
10.0 = 6.5 + x
Where x is the mass of the gaseous product
x = 10.0 - 6.5
= 3.5 g
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2. if two oxygen atoms are double-bonded to each other, how many bonding electrons are assigned to each oxygen atom when calculating the oxidation numbers?
There are two bonding electrons when two oxygen atoms are double-bonded to each other.
Due to the fact that each oxygen only receives one electron from its nearby hydrogen, oxygen still has an oxidation number of -1. There is no partial charge produced by the link between two identical oxygen atoms since the electrons were also shared equally.
Oxygen has 6 valance electrons. It will share 2 electron to complete its octet and form double bond .
Hence, in calculation of oxidation number of O2 molecule bonding electrons will be 2
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Which of the following types of energy is question 4 of 5
associated with movement?
O Potential
O Gravitahonal
O Kinetic
O Chemical
Answer:
Explanation:
According to the periodic table of the elements, which set of elements has similar properties?.
We can infer from the periodic table of the elements that elements belonging to the same groups have comparable chemical characteristics. An element's chemical characteristics are given by its electron density.
The number of electrons in the valence shell of an atom determines an element's physical and chemical properties according to modern periodic theory. The amount of electrons in an atom's valence shell determines an element's physical and chemical characteristics, in accordance with modern periodic theory. The number of valence electrons shared by all the elements in a group is one. It follows that elements belonging to the same groupings have chemical characteristics that are similar. A substance's quality that can be seen is known as its chemical property.
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which breathing apparatus filters out harmful particles, vapors, or gases by using filters attached to the masks being used?
Breathing apparatus filters out harmful particles, vapors, or gases by using filters attached to the masks being used is Air purifying respirator.
An air purifying respirator removes the gases, gases vapors, combination of contaminants from the air. There are two types of respirator first which removes the dust and harmful substances and the other is which removes the vapors and gases. there are many benefits of using the air purifier. like related to our lungs , asthma. by filtering out fine particles
Thus, Breathing apparatus filters out harmful particles, vapors, or gases by using filters attached to the masks being used is Air purifying respirator.
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You have forgotten the ideal gas constant. Describe an experiment, similar to this one, that would allow you to determine the value for r. What information would you need to know about the h2o2 solution?.
The information you need to know about the ideal gas constant and H₂O₂ solutions comes from stoichiometric experiments.
The ideal gas constant R can be found experimentally by determining the number of moles of gas occupied by a given measurement volume at a known pressure and temperature, and H2O2 is a compound. It is used in a variety of chemical reactions, is slightly more viscous than water, and in experiments can decompose hydrogen peroxide and use the ideal gas law rearrangement equation to calculate the value of r. To make a decision, we need information such as the concentration, volume, and molarity of H2O2. Its stoichiometry
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Which process would most likely increase the dissolved oxygen level in a freshwater lake?.
Lake turnover process would most likely increase the dissolved oxygen level in a freshwater lake. Correct answer: letter B.
Since, it helps to improve water quality and circulation.
How do the renovation activities help to increase the oxygen level in the freshwater lake?Renewal activities such as:
AerationAdding oxygen-rich waterIncreasing water movementCan all help to increase the amount of oxygen in the water.
Adding vegetation to the lake can also help to increase oxygen levels by providing a place for aquatic organisms to live and produce oxygen through photosynthesis. Additionally, removing excess nutrients from the water can help reduce algae growth which can reduce the amount of oxygen available for other organisms.
Which process would most likely increase the dissolved oxygen level in a freshwater lake?
A. Algae bloom
B. Lake turnover
C. Photosynthesis
D. Respiration
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How do components in an electrical system transform electrical energy into kinetic energy?.
When current is applied, flow charges begin to flow, converting electrical potential energy into kinetic energy that aids in the movement of the fan. The fan's rotation is aided by the conversion of the kinetic energy into another form once more.
How does electricity become kinetic energy?However, as soon as you exert force on the battery, the charged particles begin to exert their energy, transforming the potential energy into kinetic energy. Similar to this, when you turn on a light, the potential energy moves through your wiring and is transformed into heat and light, both of which are examples of kinetic energy.
The vehicle's motor converts the electric potential energy into the electric current it needs to produce kinetic energy. Kinetic energy is the energy of motion, and the rotation of a rotor in a motor is the source of kinetic energy. The wheels may turn because of the rotor's spinning transfer of energy.
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calculate the mass percent (m/m) of a solution prepared by dissolving 47.50 gg of naclnacl in 171.9 gg of h2oh2o .
The mass percent (m/m) of a solution is 21.64%.
Mass mass percent is what?A concentration or a component in a specific mixture can be expressed as mass percent. The mass percentage that indicates the mass of solute present in a given mass of solution can be used to describe the composition of the solution. In terms of mass or moles, the solute's concentration is expressed.
The general formula for a solution's mass percent is:
% m/m = [grams of solute] / [grams of solution] × 100
A solution is made up of both solute and solvent in grams.
So, here's the issue:
Solute = NaCl =mass of solute = 47.50g
Solvent = H2O =mass of solvent = 171.9g
mass of solution =47.50 g + 171.9g = 219.4g
% m/m = [47.50 / 219.4] ×100 = 21.64%.
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A sample of copper with a mass of 63. 5 g contains 6. 02 x 1023 atoms. Calculate the mass of a single copper atom.
the mass of one atom will be [tex]m'=1.054 * 10^{-22}[/tex] g
What is the use of copper metal?Due to their greater conductivity than aluminum materials, copper materials are used in electronic equipment. Copper replaces aluminum in silicon chips for connectivity and leads frames in integrated circuits and printed circuit boards.
Let us Calculate the mass of a single copper atom.The given sample of copper has a mass of 63.5 g
The number of atoms of copper in the sample is=[tex]6. 02 * 10^{23 } atoms[/tex]
It is given that n=[tex]6. 02 * 10^{23 } atoms[/tex] number of copper atoms has a mass of 63.5 g.
So, the mass of 1 copper atom will be,
[tex]m'=\frac{m}{n}[/tex]
[tex]m'= \frac{63.5}{6.022 * 10^{23} }[/tex]
[tex]m'= 10.54 * 10^{-23}[/tex]g
[tex]m'=1.054 * 10^{-22}[/tex] g
Therefore, the mass of one atom will be [tex]m'=1.054 * 10^{-22}[/tex] g
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Consider the reaction below.
H₂PO4+H₂O → H3O+ + HPO4²-
Which of the following is a base-conjugate acid pair?
OH₂O and H3O+
OH₂O and H₂PO4
OH₂PO4 and HPO4²-
OH₂PO4 and H3O+
The strong acid and strong base has high rate constant of dessociation. Weak acid and base are the one whose rate constant for the dissociation is low, they do not dissociate readily in water. Therefore, the correct option is option A.
What are acid and base?Acid is a solution which releases H⁺ hydrogen ion when dissolved in water. Base are the solution which releases hydroxide ion OH⁻ ion when dissolved in water.
The balanced equation is
H₂PO[tex]_4[/tex]+H₂O → H[tex]_3[/tex]O+ + HPO[tex]_4[/tex]²-
H₂PO[tex]_4[/tex] is a acid and if we remove one hydrogen ion from this then we get an anion called conjugate base. The pair is called acid base conjugate pair. H₂O is acid over here and if we give one hydrogen ion to this then the cation that we will get is called conjugate acid. The pair is called base conjugate acid pair.
Therefore, the correct option is option A.
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select each alcohol functional group present in the following molecule that when treated with pcl3 or pbr3 would yield an alkyl halide at its position.
oose each ethanol functional group in the preceding molecule that, when subjected to pcl3 or pbr3, would result in the formation of an alkyl halide at position R3COH.
What is molecule explain?A is the smallest component of a chemical that keeps its content and properties. It is made up of two or even more atoms that are joined together by chemical bonds. Chemistry is built on molecules. The chemical name and a subscript indicating the number many atoms are used to identify molecules.
Is water a molecule?Molecules are created when atoms come together. One hydro (H) ions one and oxygen (O) atom make up the three atoms that make up a water molecule. Because of this, water is occasionally abbreviated as H2O. There are thousands of water molecules in a single drop of liquid.
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the keeling curve shows a general increase in co2 concentrations since 1958. this general increase is thought to be a direct result of:
He noticed that CO2 levels were rising almost annually at Mauna Loa. Keeling was able to link the usage of fossil fuels to this increase by looking at the CO2 levels in his sample data.
What is the keeling curve?Since 1958, the amount of carbon dioxide (CO2) in the Earth's atmosphere has been plotted on a graph called the Keeling Curve. Dr. Charles David Keeling, who developed the Keeling Curve, is its namesake.
By collecting air samples and calculating the amount of CO2 they contained, Keeling started researching atmospheric carbon dioxide in 1956. He eventually picked up on a trend. Compared to samples taken during the day, the air samples taken at night had a greater concentration of CO2.
He used his knowledge of plant respiration and photosynthesis to explain this observation: plants absorb CO2 during the day to photosynthesize—or generate food for themselves—but release CO2 at night.
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Which statement accurately describes the atoms of a specific element?
The atoms of a specific element is A zinc Zn atom containing 30 protons inside the nucleus and 30 electrons outside the nucleus.
Each element's atoms contain a characteristic number of protons and electrons. The number of protons determines the atomic number of an element and is used to distinguish one element from another. All atoms of a given element are identical in that they have the same number of protons, which are one of the building blocks of an atom.
Atoms of different elements have different numbers of protons, so they are also different from atoms of all other elements. Atoms can only have electrons and protons, but neutrons are the correct description for an element's atom. There are two properties that can be used to identify an element. Atomic number or number of protons in an atom. The number of neutrons and the number of electrons are often the same as the number of protons.
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besides information on chemical concentration and water temperature, what other machine setting information should be posted on dish washing machines? besides information on chemical concentration and water temperature, what other machine setting information should be posted on dish washing machines?
Beside information on chemical concentration add water temperature, water pressure should also be posted on dish washing machines.
Temperatures for dishwashers are fixed by the manufacturer to make sure it’s the most efficient that it can be. An average dishwasher temperature runs its main cycle at about 130-140°F.1 This is because the temperature of water in the dishwasher needs to be hot enough to ensure that the detergent is fully dissolved and activated, while also dislodging any leftover food and grease. During the rinse phase, the water is heated to slightly higher temperatures of up to 180°F to make sure the dishes are safe to eat from.2 The high heat water also helps with the drying as the dishes will be warm
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which of the following statements is false? question 18 options: a) the halogens tend to form 1 ions. b) an anion is usually larger than its corresponding atom. c) metals tend to form cations. d) an atoms is usually larger than its corresponding cation. e) nonmetals tend to gain electrons.
The statements that false is a. The halogens tend to form 1⁺ ions
The reason of that is:
a. The halogens tend to form 1+ ions: it is not correct, since halogens form 1- ions, they form anions, since they are nonmetals. Halogens tend to form anions with a charge of -1 because Halogens have 7 electrons in their valence shell, so they tend to gain 1 electron to fill their octet.
b. An anion is usually larger than its corresponding atom. it's correct because when the atom has more electrons, and it is an anion, it increases its size more.
c. metals tend to form cations. It's correct, because metals tend to yield their electrons by charging positively and therefore, form cations.
d. Atoms are usually larger than their corresponding cation: it is correct since cations are the ions that have lost electrons, thus decreasing their size.
e. Nonmetals tend to gain electrons. it is correct since nonmetals tend to accept electrons and form anions.
So, The statements that false is a. The halogens tend to form 1+ ions
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