The name for this W(C2H3O2)4 is the chemical formula for lead(IV) acetate, often known as lead tetraacetate, is Pb(C2H3O2)4.
What is chemical formula?Chemical formula is defined as any of a number of ways to describe the structure or content of chemical substances. The chemical formula is a way of expressing information about the atomic proportions that make up a certain chemical compound or molecule using the numbers and symbols of the chemical elements. The sorts of atoms and their numbers in a molecule or compound are described using chemical formulae. Each element's atoms are denoted by one or two distinct letters.
It is not a salt because it is a colorless solid that dissolves in nonpolar, organic liquids. Moisture causes it to break down, therefore acetic acid is usually added when storing it. The substance is utilized to create organic compounds.
Thus, the name for this W(C2H3O2)4 is the chemical formula for lead(IV) acetate, often known as lead tetraacetate, is Pb(C2H3O2)4.
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1. How many atoms of oxygen are present in 0.04 mole NaNO3?
2. How many moles of nitrogen atoms are present in 10.5g of N2O5?
3. How many atoms of oxygen are present in 50g of Fe(H20)2(S04)3? Please answer fast
Answer:
1. 7.227x10²⁴ O atoms
2. 0.1944 mol
3. 3.18x10²³ atoms
Explanation:
1. To solve this problem we need to use Avogadro's number, which states the number of molecules that are in 1 mol of a substance:
0.04 mol NaNO₃ * 6.023x10²³ molecules/mol = 2.409x10²⁴ molecules NaNO₃There are 3 O atoms per NaNO₃ molecule, thus the answer is (3* 2.409x10²⁴) 7.227x10²⁴ atoms.
2. First we convert 10.5 g of N₂O₅ into moles, using its molar mass:
10.5 g N₂O₅ ÷ 108 g/mol = 0.0972 mol N₂O₅There are 2 N moles per N₂O₅ mol, thus the answer is (2*0.0972) 0.1944 mol.
3. First we convert grams into moles:
50 g Fe(H₂O)₂(SO₄)₃ ÷ 379.85 g/mol = 0.132 molThen we use Avogadro's number:
0.132 mol * 6.023x10²³ molecules/mol = 7.95x10²² molecules Fe(H₂O)₂(SO₄)₃There are 14 O atoms per Fe(H₂O)₂(SO₄)₃ molecule, so the answer is (7.95x10²² * 4) 3.18x10²³ atoms.
Shape of a molecule having four Bond pairs and two lone pair of electron will be
Answer:
bipetal
Explanation:
this is because 2 electrons will be donated by each element, as seen in NO2
Which of the following statements BEST explains the data in the table?
А
The acceleration determines the total distance traveled,
B
The acceleration determines the change in velocity
С
There is a constant acceleration when an object is moving,
D
The greater the velocity is of an object the greater the acceleration of the object)
Answer: b
Explanation:
Which describes the path of energy that a gas powered car uses to drive along a road?
A. nuclear energy to light energy to electrical energy
B. chemical energy to heat energy to mechanical energy
C. mechanical energy to electrical energy to light energy
D. gravitational energy to kinetic energy to electrical energy
Answer:
mechanical energy to electrical energy to light energy
Describe the structure of the beryllium atom. In your answer make reference to the number of sub-atomic particles and where they are found in the atom.Immersive Reader
(5 Points)
Answer:
The nucleus consists of 4 protons (red) and 5 neutrons (orange). Four electrons (white) occupy available electron shells (rings). The stability of an element's outer (valence) electrons determines its chemical and physical properties. Subatomic particles are particles that are smaller than the atom. Protons, neutrons, and electrons are the three main subatomic particles found in an atom. Protons have a positive (+) charge. An easy way to remember this is to remember that both proton and positive start with the letter "P."
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A beryllium atom has atomic number 4 where its nucleus has 4 protons and 5 neutrons and 4 electrons revolving around the nucleus in in the shells.
What is an atom?An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
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What is a major problem with CFCs?
A-it is toxic to breathe.
B-It does not readily break down in the atmosphere.
C-It is a greenhouse gas.
D-It isn't a good refrigerant
What happens to the air temperature if you add extra CO2?
Answer:
Adding more CO2 to the atmosphere will cause surface temperatures to continue to increase. However, more energy is absorbed in the weaker bands and in the wings of the strong band, causing the surface and lower atmosphere to warm further.
How many grams of KCl are produced if 90 g KCIO3 decomposes? *
54.75 g KCI
13.69 g KCI
27.37 g KCI
37 g KCI
Percentage of isotopes in 35/17 Cl and 37/17 Cl with the molar mass of chlorine as 35.5g and the mass of each nucleon to be 1.0000 amu
Answer:
The abundance of 35/17 Cl is 75% and 25% of 37/17Cl
Explanation:
The molar mass of an atom is defined as the sum of the masses of each isotope times its abundance, that is:
35.5amu = 35amu*X + 37amu*Y (1)
Where X is the abundance of the 35/17Cl and Y the abundance of 37/17 Cl
As there are just these 2 isotopes and the abundances of both isotopes = 1:
X + Y = 1 (2)
Replacing (2) in (1):
35.5 = 35X + 37(1-X)
35.5 = 35X + 37 - 37X
-1.5 = -2X
X = 0.75 = 75%
And Y = 100-75% = 25%
The abundance of 35/17 Cl is 75% and 25% of 37/17ClWhat is the empirical formula of a compound that contains 85% Ag and 15% F by mass?
Answer: AgF
Explanation: 85 / 108 (the relative atomic mass of Ag) = 0.79
15 / 19 (the RAM of F) = 0.79
This is a 1:1 ratio so the empirical formula is AgF.
AgF is the empirical formula of a compound that contains 85% Ag and 15% F by mass.
What are moles?A mole is defined as 6.02214076 × [tex]10^{23}[/tex]of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
Molar mass of Ag =108 amu
[tex]Moles = \frac{mass}{molar \;mass}[/tex]
85 ÷ 108 = 0.79
The molar mass of F = 19amu
[tex]Moles = \frac{mass}{molar \;mass}[/tex]
15 ÷ 19 = 0.79
This is a 1:1 ratio so the empirical formula is AgF.
Hence, AgF is the empirical formula of a compound that contains 85% Ag and 15% F by mass.
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Zn + 2HCl → ZnCl2 + H2
What is the half reaction for the reduction of hydrogen in the reaction?
Answer:
2H^+ +2e -> h2(g)
Explanation:
Since hydrogen is reduced, look for a decrease in oxidation number and the gain of electrons.
Answer:
ZnCl2 + H2
Explanation:
got it correct!
Copper(ii) nitrate was dissolved in water to form an aqueous solution. Aqueous sodium hydroxide formed a light blue precipitate. What is the formula?
Answer:
Cu(OH)₂ ⇒ copper(II) hydroxide
Explanation:
Copper(II) nitrate (Cu(NO₃)₂) dissociates into ions in an aqueous solution to form Cu²⁺ ions and NO₃⁻ (nitrate) ions. If the aqueous solution contains sodium hydroxide (NaOH), which dissociates into Na⁺ and OH⁻ ions, a precipitate is formed from Cu²⁺ and OH⁻ ions. The precipitation reaction is the following:
Cu(NO₃)₂(aq) + 2 NaOH(aq) → Cu(OH)₂(s) + 2 NaNO₃(aq)
The light blue precipitated formed is copper (II) hydroxide (Cu(OH)₂), because it is an insoluble solid product.
A solution of 0.220 g of KIO3 is prepared in 50 ml volumetric flask. 2.00 mL of this solution is pipetted into a beaker with 8.00 ml distilled water, to give 10 ml of diluted KIO3. To this, 10.00 mL of starch sulfite was added. What would be the initial concentration of IO3- in this final solution
Answer:
0.00044 g/mL
Explanation:
First, 0.220 g of KIO₃ are dissolved in 50 mL, so the concentration at this point is:
0.220 g / 50 mL = 0.0044 g/mLThen 2.00 mL of this solution are added to 8.00 mL of water (final volume = 10.00 mL). We calculate the concentration of the resulting solution:
0.0044 g/mL * 2.00mL / 10.00mL = 0.00088 g/mLFinally, to this 10 mL solution, another 10.00 mL were added. Thus the KIO₃ (or IO₃⁻) concentration is:
0.00088 g/mL * 10.00mL / 20.00mL = 0.00044 g/mLSelect the correct answer.
What is the chemical formula of trisilicon tetranitride?
A.
Si3N4
B.
Si4N3
C.
Si3N6
D.
Si6N3
E.
Si4N6
Until the 1500s, doctors thought
diseases were caused spontaneously. Scientists
began proposing that diseases were caused by
seed-like entities that could be passed among
people. After the invention of the microscope,
doctors came to know that many diseases were
actually caused by microscopic living organisms
like bacteria. What does this suggest about the
nature of scientific knowledge?-
Answer:
D
Explanation:
Which reactant (X) is missing from the equation shown?
X+ PO4 → H3PO4
Answer:
H
Explanation:
b/c the polyatomic PO4¯³
have 3 valance number
pls help asap!!!!!!!
Explain:Will the bag of dog food be easier to lift?
Answer: Registered. My 65 pound dog and my 20 pound dog share an 18 pound bag of 4Health and it lasts them 3 and 1/2 weeks.
Explanation:
Answer:
Well it depends how much the bag weighs in LB and your strength.
Explanation:
20 points to whoever can answer these 3 questions correctly
Pt. 3
Answer:
Explanation:
You can't award 20 points once you have awarded 5.
One
2K + Cl2 ==> 2KCl
It's True
There are 2 Ks and Cl2 has 2 atoms making up on the left.
On the right, 1 molecule of KCl has 1 Potassium and 1 Cl. But there are 2 molecules so between the two of them, there's 2 Potassiums and 2 Cl
Two
The reactant side is the Left side. Cl2 means there are 2 Cl atoms making Cl2. Answer B
Three
False: There are 2 but read below.
I really don't know how to answer that. It's not qualified enough. There are a total of 2 Chlorines on the right hand side when there are 2 molecules. I think you are intended to answer False, but don't be surprised if you get it wrong.
1. Which of these is a chemical property? *
a) oxygen is a gas at 25 degree Celsius. b) helium is very nonreactive. c) ice melt at 0 degree Celsius. d) sodium is a soft, shiny metal.
How does Cancer Begin?
Answer:
Cancer is a disease caused when cells divide uncontrollably and spread into surrounding tissues.
Explanation: Cancer is caused by changes to DNA. Most cancer-causing DNA changes occur in sections of DNA called genes. These changes are also called genetic changes.
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what did the law of octaves state about the elements
Law of octaves states that when the elements are arranged in ascending order of atomic mass, every eighth element has comparable properties.
What are the characteristics of law of octaves ?Features of law of octaves -:
Newland Octaves arranged the known 62 elements into 8 groups of 8 each. The elements were in increasing order of atomic weight.Every element shared properties with the 8th element after it.Some limitations were made into this -:
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The law of octaves state about the elements that there must be 8 electrons in the outermost or valance shell of the electron to obtained the stability.
What is octaves rule?when the elements are arranged in the increasing order of atomic mass, every eighth element has comparable properties and that was the first time an atomic number was introduced to each element of the periodic table.
To become the stable according to rule element must complete it octave otherwise it cannot be considered the stable one.
Therefore, law of octaves state about the elements that there must be 8 electrons in the outermost or valance shell of the electron to obtained the stability.
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Is this a redox reaction? give evidence (many points plz answer)
2Mg + CO2 → 2MgO + C
Answer:
[tex] \boxed{yeah}[/tex]
Explanation:
[tex]CO_2 \: is \: reduced \: to→C \: by \: 2M_g \: (the \: reducing \: agent): while \\ 2M_g \: is \: oxydized \: to→2M_gO \: by \: CO_2 \: (the \: oxydizing \: agent)[/tex]
3. Among the pairs of organic compounds below. Which is
a. water, lubricating oil b. kerosene, liquefied perde
Answer:
A is the right answerA is the right answerA is the right answerA is the right answer
Explanation:
I need help pls...Thanks
Answer:
4. 125°C
Explanation:
I hope this helps you :D
Answer:
Explanation:can you take a pic of it a little up so i can see the h please??
please help need 18-20 answer
Answer:
800 ml
marbel
flow
Explanation:
describe how an ion is made
which of the following correctly represents the radioactive decay of cesium-137?
Which properties do all liquids share?
A. Fixed shape; volume that depends on container
B. Fixed volume; shape that depends on container
O C. Fixed volume and fixed shape
D. Volume and shape that depend on container
The value of resistance r was determined by measuring current I flowing through the resistance with an error
Correct question is;
Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each, then error in the value of resistance of the wire is?
Answer:
6%
Explanation:
From ohms law, we know that;
R = V/I
Where;
R is resistance
V is voltage
I is current
Now, the percentage error in the resistance is given by the formula;
ΔR/R = ΔV/V+ ΔI/I
We are told that the current and the voltage difference have a percentage error of 3% each. Thus;
ΔR/R = 3% + 3% = 6%