write the formula for a complex formed between cu2 and oxalate ( c2o2−4 ), with a coordination number of 4.
Answers
The formula [Cu(C2O4)2]2- represents the specific complex formed between Cu2+ and oxalate with a coordination number of 4.
The formula for the complex formed between Cu2+ and oxalate (C2O2−4) with a coordination number of 4 is [Cu(C2O4)2]2-. In this complex, Cu2+ acts as the central metal ion, while the oxalate ligand (C2O2−4) coordinates around it.
The coordination number of 4 suggests that four oxalate ligands are involved in binding to the central Cu2+ ion. Each oxalate ligand has two negatively charged oxygen atoms (O2-) and can form two coordination bonds with the metal ion, resulting in a total of four coordination bonds.
The resulting complex, [Cu(C2O4)2]2-, consists of the Cu2+ ion at the center surrounded by two oxalate ligands, with each ligand providing two oxygen atoms for coordination. The overall charge of the complex is 2-, balancing the charge of the Cu2+ ion.
Therefore, the formula [Cu(C2O4)2]2- represents the specific complex formed between Cu2+ and oxalate with a coordination number of 4.
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Related Questions
2. (**) modern vacuum pumps make it easy to attain pressures of the order of 10-13 atm in the laboratory. consider a volume of air and treat the air as an ideal gas. a. at a pressure of 9.00 * 10-14 atm and an ordinary temperature of 300.0 k, how many molecules are present in a volume of 1.00 cm3 ? b. how many molecules would be present at the same temperature but at 1.00 atm instead?
Answers
The number of air molecules in a volume of 1.00 cm3 under the conditions of the vacuum pump is 3.65 * 10-15 moles and those that would be present at the same temperature but at 1.00 atm would be 0, 04 moles
The vacuum pump is a device that extracts gas molecules from a sealed volume, to create a partial vacuum, and is frequently used in industry, especially food.
To perform both calculations considering air as an ideal gas, the equation PV = nrt is used, in which
P = Pressure
V = Volume
n = number of moles
R = Gas constant
t = temperature
Calculation of the number of air molecules in a volume of 1.00 cm3 under the conditions of the vacuum pumpData
t = 300K
V = 1L
P = 9.00 * 10-14 atm
R = 0.082 L Atm / mol °K .
n = ?
PV = nrt
n = PV/rt
n = 9.00 * 10-14. 1 / 0.082 . 300
n = 9.00 * 10-14 / 24.6
n = 3.65 * 10-15 moles
Calculation of the number of molecules present at the same temperature but at 1.00 atmData
t = 300K
V = 1L
P = 1 atm
R = 0.082 L Atm / mol °K .
n = ?
PV = nrt
n = PV/rt
n=1. 1 / 0.082 . 300
n = 1 / 24.6
n = 0.04 mole
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Based on the best Lewis structure of COF2, and your knowledge of VSEPR, where C is the central atom, which statement most accurately estimates the bond angles about the central C? four sigma bonds and two pi bonds
they are all exactly 120°
the O-C-F bond angles are slightly greater than 120° the F-C-F bond angle is slightly less than 120°
Answers
Based on the best Lewis structure of COF2 and knowledge of VSEPR theory, it can be determined that the central C atom in COF2 has four electron groups, including two single bonds with F atoms and two double bonds with O atoms. Using the VSEPR theory, we can predict the geometry around the central C atom to be tetrahedral with a bond angle of 109.5°.
However, due to the presence of two double bonds, the electron density around the C atom is unevenly distributed, causing the bond angles to deviate slightly from the ideal tetrahedral angle. The two O-C-F bond angles are slightly greater than 120° due to the repulsion between the lone pairs of electrons on the O atoms and the bonding pairs of electrons on the C atom. On the other hand, the F-C-F bond angle is slightly less than 120° due to the repulsion between the bonding pairs of electrons on the F atoms.
Therefore, the statement that most accurately estimates the bond angles about the central C atom in COF2 is "the O-C-F bond angles are slightly greater than 120°, and the F-C-F bond angle is slightly less than 120°." These slight deviations from the ideal tetrahedral angle can have significant effects on the properties and reactivity of the molecule.
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Pls help asap i will mark u brainlist
Answers
Answer:
not sure
Explanation:
Goo gle can help for sure lol that's what I do anyway good luck hope you get it right.
At a certain temperature, SO,(9) and (o) react to produce SO, (s) according to the chemical equation shown above. An evacuated rigid vessel is originally filled with SO, () and O.), each with a partial pressure of 1 atm. Which of the following is closest to the partial pressure of 0,9) after the system has reached equilibrium, and why? A) O atm because K, is very large, nearly all the SO, () and 0,6) are consumed before the system reaches equilibrium B) 0.5 atm, because K is very large, nearly all the SO, () is consumed before the system reaches equilibrium, but an excess amount of O,() remains at equilibrium C) 1 atm, because K, is very large, the system is already near equilibrium, and there will be very little change to the partial pressure of O,G). increases the amount of O,Co) tequilibrium D) 1.5 atm because K, is very lwg, the decomposition of any so, (o) that for
Answers
The closest to the partial pressure of O₂ after the system has reached equilibrium is 0.5 atm, because K is very large, nearly all the SO₂ is consumed before the system reaches equilibrium, but an excess amount of O₂ remains at equilibrium. the correct answer is B.
Chemical equilibrium is the condition in which the concentrations of the reactants and products are equal and have no further tendency to fluctuate over time, with no discernible change in the features of the system.
The equilibrium moves to the side of the reaction where there are less moles of gas as the pressure increases. When the pressure decreases, the equilibrium moves to favor the reaction that produces more gas molecules.
Partial pressure is inversely proportional to volume, according to the ideal gas law. Additionally, it correlates with both the temperature and the amount of moles.
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A customer is traveling to a branch office static ip.
Answers
Answer:
A customer is travelling to a branch office, and the network administrator provides her with a static IP address for her laptop
Explanation:
I hope this helps!!!...
Brainliest please???
what will happen when iodine solution is added to
potassium chloride.
Answers
Answer:
The chlorine is more reactive than the iodine in potassium iodide. This causes the iodine to be displaced from the compound and chloride ions take its place instead.
Explanation:
Answer:
Potassium iodide + chlorine gas. In this reaction when potassium iodide solution is put into chlorine gas a rapid reaction occurs and black iodine solid is formed along with potassium chloride solution. The chlorine has kicked the iodide out.
Explanation:
how many grams of alcl3 are produced when 355 ml of 1.65 m hcl solution are reacted with excess al according to the reaction?
Answers
According to the reaction, when 355 ml of 1.65 m Hydrochloric acid solution are combined with too much aluminum, 26.03 g of aluminum chloride is created.
An inorganic substance with the formula AlCl3 is aluminum chloride, also referred to as aluminum trichloride. It takes the form of [Al(H2O)6] hexahydrate. Aluminum chloride is ALCl3, which is composed of six water molecules. Aqueous hydrochloric acid, also referred to as muriatic acid, is a type of hydrochloric acid. It is a colourless solution with an overpowering odor. Strong acid is how it is categorized.
2 Al(s) + 6 HCl is the given reaction. ———-> 2 AlCl3 + 3H2
Using the provided data
The amount of HCl in moles is n= Volume * Concentration = 0.58575 mol (1.65 M * 355 ml)/1000 ml
based on the response,
It takes 6 mols of HCl. To neutralize 2 moles of aluminum, 0.58575 mol of hydrochloric acid must be used.
using the cross-multiplication method, 0.19525 moles are obtained by multiplying 0.58575% by 2/ 6.
Weight of the AlCl3 = 0.1952 moles * 133.340538 g/mol = 26.03 g
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GIVING BRAINLY, FOLLOW, 5 STARS AND HEARTS
which of the following is NOT a characteristic of hot water heating systems?
Answers
Answer:
The one on the top,'' As the water cool, it is returned to the boiler where it is heated,''
Explanation:
when solid surfaces slide over each other, the kind of friction that occurs is _ friction
Answers
When solid surfaces slide over each other, the kind of friction that occurs is called Sliding Friction.
what is the metal that is grouped with metalloids
Answers
Answer:
The post-transition metals cluster to the lower left of this line. Metalloids: The metalloids are boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po). They form the staircase that represents the gradual transition from metals to nonmetals.
Explanation: i googled it
The metal that is grouped with metalloids are
boron, silicon, germanium,arsenic, antimony, and tellurium.A metalloid is a type of element which possesses the characteristics of both the metals and the non-metals.
Metals are those elements that are good conductors of heat and electricity while non-metals are those elements that neither conducts heat nor electricity.
The characteristics of the metalloids listed above are:
They conduct heat only at higher temperatures. The metalloids that can conduct electricity are called semi-conductors.They are shiny like metals but brittle like non-metals.Therefore, since these elements share both the properties of metals and non-metals, they are called the metalloids.
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examples is potassium?
Answers
Answer: ... potassium citrate, potassium chloride, and potassium with dextrose and sodium chloride. Potassium atom is an alkali metal atom.
Explanation:
When do we classify a disease as pandemic
Answers
Answer:
example ☝
a pandemic is a situation when people of suffering from the following disease is large in number or the cases are in larger number and it is
One of the leading contributors to climate change is the burning of fossil fuels such as natural gas and oil. Name four things people use every day that directly or indirectly consume fossil fuels. Explain your reasoning.
Answers
Answer:cars
Explanation:bc it uses oil
Cars and trucks, coal-fired power plants, airplanes, large industrial operations are the four things people use every day that directly or indirectly consume fossil fuels.
What are fossil fuels?A fossil fuel is a hydrocarbon containing substance that is recovered and used as fuel that naturally forms in the Earth's crust from the remains of dead plants and animals. Fossil fuels include coal, oil, and natural gas.
A general name for non-renewable energy sources such crude oil, petroleum products, natural gas, derived gas, coal, coal products, and non-renewable wastes is "fossil fuel."
These fuels come from plants and animals that lived in the distant past of the earth's history, such as millions of years ago.
Therefore, fossil fuels can be burned to produce energy, operate engines, or offer direct heat.
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a clean, dry, and open empy flask is being heated in a water bath. under which conditions before or after heating does the flask contain more gas molecules
Answers
The flask contains more gas molecules after heating in a water bath because the increased temperature causes the gas molecules to expand and occupy a larger volume, resulting in an increase in the number of gas molecules.
When a clean, dry, and open flask is heated in a water bath, the gas molecules present in the flask tend to expand due to increased temperature. This expansion causes a change in the number of gas molecules present in the flask, which can be measured using the ideal gas law.
Before heating the flask in a water bath, the gas molecules present in the flask are at a lower temperature and occupy a smaller volume. The number of gas molecules present in the flask can be determined using the ideal gas law, which relates the pressure, volume, temperature, and number of gas molecules in a system. The ideal gas law is given by:
PV = nRT
Where P is the pressure of the gas, V is the volume, n is the number of gas molecules, R is the ideal gas constant, and T is the temperature.
Assuming that the pressure, volume, and temperature of the flask are constant before heating, the number of gas molecules in the flask can be calculated using the ideal gas law. This value will be the same before and after heating.
However, when the flask is heated in a water bath, the temperature of the gas molecules in the flask increases, causing them to expand and occupy a larger volume. The pressure of the gas inside the flask remains constant, so the volume of the gas increases in proportion to the temperature.
This expansion causes the number of gas molecules in the flask to increase after heating. The new number of gas molecules can be calculated using the ideal gas law, with the new temperature and volume values.
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Mention and discuss briefly the adverse effects of chemistry.
Answers
Depending on the chemical, these longer-term health effects might include:
organ damage. weakening of the immune system. development of allergies or asthma. reproductive problems and birth defects. effects on the mental, intellectual or physical development of children. cancer.The only beverage allowed during lab is water. True or false
Answers
Answer:
true (in some labs you aren't allowed to have any drinks so i dont know if that applies to your lab or not )
Explanation:
Identify the molecular geometry corresponding to each expected bond angle around the central atom.
a. Linear b. Trigonal pyramidal c. Trigonal planar d. Tetrahedral
Answers
In Linear molecular geometry, the bond angle is 90°, in trigonal pyramidal geometry, bond angle is 107°, in trigonal planar geometry, bond angle is 120° and in tetrahedral, the bond angle is 109.5°.
In the linear geometry, the central atom has two side atoms attached which are at and bond angle of 180°.
In trigonal pyramidal geometry, the central atom has four side atoms which resembles a pyramid like structure. The bond angle between the two consecutive side atoms is 107°.
In trigonal planar geometry, three atoms are attached on the sides of central atom. The bond angle between these side atom is equal and of 120°.
In Tetrahedral geometry, the central atom and the side atoms makes a triangular prism like structure, the bond angle between side atoms is 109.5°.
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4. Circle the letters of elements that are required for a measurement to
make sense.
a. scientific notation
b. numbers
с. exponents
d. units
Answers
Answer:
(b) numbers and (d) units
Explanation:
To measure any quantity, numbers and units are required. It can be understood with an example.
We measure a length of a piece of wood as 5 cm. In this case 5 is a number and centimeters or cm is a unit in which we measure its length. It means for any measurement, number and units are important elements that are required to make sense.
Hence, the correct options are numbers and units.
Atoms of which pair of elements will form ionic bonds in a compound?
Answers
A heat engine operates between a source at 477°c and a sink at 25°c. If heat is supplied to the heat engine at a steady rate of 65,000 kj/min, determine the maximum power output of this heat engine.
Answers
The maximum power output of this heat engine is 39,165.75 kJ/min. The result is obtained by using the value of Carnot Efficiency.
What is Carnot Efficiency?The efficiency of a heat engine is generally expressed as
\(\eta = \frac{W}{Q_{h}}\)
Where
W = work output (J)Qh = heat energy input (J)The Carnot Efficiency is the maximum efficiency of heat engine that is dependent on the temperatures of the hot source (Th) and the cold sink (Tc). The Carnot Efficiency can be expressed as
\(\eta = 1 - \frac{T_{c} }{T_{h}}\)
Where
Tc = temperature of the cold sink (K)Th = temperature of the hot source (K)Given the temperature of the hot source at 477°C and the cold sink at 25°C. The heat is supplied at a steady rate of 65,000 kJ/min.
What is maximum power output of this heat engine?
First, we convert temperature unit from Celsius to Kelvin.
\(T_{h} = 477 + 273.15 = 750.15 K\)
\(T_{c} = 25 + 273.15 = 298.15 K\)
The Carnot Efficiency is
\(\eta = 1 - \frac{T_{c} }{T_{h}}\)
\(\eta = 1 - \frac{298.15 }{750.15}\)
\(\eta = 1 - 0.39745\)
\(\eta = 0.60255\)
The power equals work divided by time. By using the value of Carnot efficiency, the maximum power output is
\(\eta = \frac{\frac{W}{t} }{\frac{Q_{h}}{t} }\)
\(0.60255 = \frac{\frac{W}{t} }{65.000}\)
\(\frac{W}{t} = 65.000 \times 0.60255\)
\(\frac{W}{t} = 39,165.75 kJ/min\)
Hence, the maximum power output of this heat engine is 39,165.75 kJ/min.
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here there we go now yall can answer
Answers
Write the correct abbreviation for each metric unit.
1) Kilogram __ 4) Milliliter __ 7) Kilometer __ 2) Meter 5) Millimeter __
8) Centimeter __ 3) Gram __ 6) Liter __ 9) Milligram __
Answers
The correct abbreviation for each metric unit is:
Kilogram - kg, Milliliter - ml, Kilometer- Km, Meter- m, Millimeter - mm, Centimeter - cm, Gram - g, Liter - L, and Milligram - mg.
What is the metric system?The metric system can be described as a system of measurement that succeeded the decimalized system based on the meter. Each of the fundamental dimensions can be expressed by a single base unit of measure.
For quantities derived from the base units of the system, units derived from the base units are used such as the square meter being the derived unit for the area, a quantity derived from length.
Metric units can be described as units based on the meter, gram, or second and decimal multiples or sub-multiples of these. The units of the International System of Units (SI). By extension, they involve units of electromagnetism from the CGS units and SI units systems.
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Using the data table below and the method of initial rates, determine the rate law and rate constant for the reaction at a particular temperature. 2NO2(g)+F2(g)⟶2NO2F(g)
Trial [NO2],molL [F2],molL initial rate,molL s
1 1.0×10−3 2.0×10−3 5.0×10−2
2 1.0×10−3 4.0×10−3 1.0×10−1
3 2.0×10−3 2.0×10−3 1.0×10−1
4 3.0×10−3 6.0×10−3 4.5×10−1
Answers
The rate law for the reaction is Rate = \(k[NO2]^1[F2]^1\), and the rate constant is k = 25.0 L/(mol·s).
We must analyse the data to find the reaction's rate law and rate constant. Examine the data table:
Trial 1: [NO2] = 1.0×10^(-3) mol/L
[F2] = 2.0×10^(-3)
Initial rate: 5.0×10^(-2) mol/(L·s).
Trial 2: [NO2] = 1.0×10^(-3) mol/L [F2] = 4.0×10^(-3)
Initial rate: 1.0×10^(-1) mol/(L·s).
Trial 3: [NO2] and [F2] = 2.0×10^(-3) mol/L.
Initial rate: 1.0×10^(-1) mol/(L·s).
Trial 4: [NO2] = 3.0×10^(-3) mol/L [F2] = 6.0×10^(-3)
Initial rate: 4.5×10^(-1) mol/(L·s)
From trial 1 to trial 3, doubling the [NO2] concentration while maintaining [F2] doubles the initial rate. This suggests a first-order reaction with respect to [NO2].
Keeping the [NO2] constant, doubling the [F2] concentration from trial 1 to trial 2 doubles the original rate. The response is first-order with regard to [F2].
After determining the reaction sequence for each reactant, we can formulate the rate law expression:
\(Rate = k[NO2]^1[F2]^1\)
1+1=2 since both reactants are first order.
We can use any trial to get the rate constant (k). Trial 1:
5.0×10^(-2) mol/(L·s)=k(1.0×10^(-3) mol/L)(2.0×10^(-3) mol/L)
Simplifying, k = 25.0 L/(mol·s)/(5.0×10^(-2))/(1.0×10^(-3)×2.0×10^(-3)).
Thus, the reaction rate rule is Rate = \(k[NO2]^1[F2]^1\) with k = 25.0 L/(mol·s).
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how many moles are there in 9.2g of ethanol
Answers
Answer:
0.199702876850182 that's it
Then you need to divide the mass by the molar mass. 9.2/46=0.2moles
Please Help!!!!
If the atomic mass of an element is 22 and the atomic number of said element is 10, what is the number of protons, electrons, and neutrons in this element?
Answers
The element is Neon
The protons is the same as the atomic number (10 protons)
The electrons are the same as the number of protons in a neutral atom (10 electrons)
The neutrons can be found by subtracting the protons from the atomic mass (22-10=12 neutrons)
pentanitrogen heptachloride formula
Answers
Answer:
Explanation:
this is the answer hope it helps!(:
The chemical formula of pentanitrogen heptachloride is N₅Cl₇ as it has 5 nitrogen atoms and 7 chlorine atoms.
What is chemical formula?
Chemical formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols of elements. It also makes use of brackets and subscripts.
Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form is called empirical formula.
It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.
There are four types of chemical formula:
1)empirical formula
2) structural formula
3)condensed formula
4)molecular formula
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choose:
1) Positive ion of metal .... active than its atom.
a/ more
b/ less
c/ equally
d/ none is correct
and please tell me why.
Answers
Answer:
It is more active
Explanation:
This atom attracts all the elecrons of the atom forming energy levels in form of orbits
\({}\)
Consider the four weak acids listed below.
Which would exist primarily as a cation in an aqueous solution with pH =1.4\%
glyoxylic acid, K_{a} = 6.6 * 10 ^ - 4 p*K_{a} = 3.2
propanoic acid, K_{a} = 1.4 * 10 ^ - 5 p*K_{a} = 4.9
) alloxanic acid, K_{a} = 2.3 * 10 ^ - 7 p*K_{a} = 6.6
all would be cationic
none would be cationic
malonic acid, K_{a} = 1.5 * 10 ^ - 3 p*K_{a} = 2.8
Answers
Based on the information provided, we can determine which weak acid would exist primarily as a cation in an aqueous solution with a pH of 1.4%.
To make this determination, we need to consider the pKa values of the weak acids. The lower the pKa value, the stronger the acid. In an acidic solution with a pH of 1.4%, we would expect the majority of weak acids to be in their protonated (cationic) form.
Comparing the pKa values:
Glyoxylic acid has a pKa of 3.2.
Propanoic acid has a pKa of 4.9.
Alloxanic acid has a pKa of 6.6.
Malonic acid has a pKa of 2.8.
Since the pH of the solution is 1.4%, which is highly acidic, we can conclude that only the weak acid with the lowest pKa value will exist primarily as a cation. Therefore, in this case, malonic acid (with a pKa of 2.8) would exist primarily as a cation in the aqueous solution with a pH of 1.4%.
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Please help me fast...
Answers
B) 1 and 3
it's the right answer
Answer:
For 3rd question, the answer is option D
Thanksgiving is November 26th. Today is November 9th. How many seconds are there until Thanksgiving Day?
Answers
Explanation:
There are 17 days between 11/9 and 11/26.
There are 24 hours in a day. Multiply the number of hours by the number of days to find the number of hours in 17 days.
24*17 = 408 hours
There are 3600 seconds in one hour (60 minutes * 60 seconds). Multiply the number of seconds per hour by the number of hours to find your solution.
3600*408 = 1,468,800
1,468,800 seconds between the dates.