The average atomic mass of the metal having isotopes as it would be seen in the periodic table is 52.25 amu.
What are isotopes?Isotopes are defined as substances having same number of protons but different number of neutrons.Number of protons is characteristic for determining position of elements in the periodic table.
Since,all isotopes have the same number of protons and hence have same position.They have similar chemical properties as they have same number of electrons.
They find applications in the field of nuclear medicine and oil and gas research . There are 2 types of isotopes : stable and unstable
Unstable isotopes are radioactive and are called as radioisotopes.Some of these isotopes are man -made and hence also called as artificial isotopes.Every element has an isotope which is either man-made or natural .The average of the atomic masses of the isotopes that is, 50+52+53+54=209/4=52.25 amu.
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How many lone pairs of electrons are in the electron-dot structure of h2o?
What is the mass of 5.40×1021 platinum atoms?
The mass of 5.40 × 10^21 platinum atoms is approximately 1.75 grams. This is calculated using Avogadro's number and the molar mass of platinum.
Explanation:To calculate the mass of 5.40×1021 platinum atoms, first, we need to understand that the atomic mass of platinum is approximately 195.08 u (atomic mass units). In chemistry, one mole of any substance contains Avogadro's number (6.022 × 1023) of particles (atoms, molecules, ions, etc). Therefore, the molar mass of platinum is 195.08 g/mol, meaning that 1 mole of platinum atoms (6.022 × 1023 atoms) has a mass of 195.08 grams.
First, we find out how many moles 5.40×1021 platinum atoms constitute.
5.40 × 1021 atoms/ (6.022 × 1023 atoms/mol) = 0.00897 moles
Since the mass of 1 mole platinum is 195.08 g, therefore:
Mass = Moles × Molar mass = 0.00897 moles × 195.08 g/mol = 1.75 g
Therefore, the mass of 5.40 × 1021 platinum atoms is approximately 1.75 grams.
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Fill in the coefficient that will balance the following reaction:
_____NH4Cl+_______Ag3PO4--->_____AgCl+_____(NH4)3PO4
The molecular mass of bromophenol blue is 692.0. Find the atomic mass for copper from a periodic table.
A very strong structural molecule in plants that is formed by hydrogen bonding between chains of glucose molecule is
what requirements must a molecule meet in order to be considered nonpolar?
When fe(no3)2(aq) and na2s(aq) are mixed, what is the black coloured precipitate that forms?
Final answer:
The black colored precipitate formed when Fe(NO3)2(aq) and Na2S(aq) are mixed is Iron(II) sulfide, represented by the compound FeS.
Explanation:
When Fe(NO3)2(aq) and Na2S(aq) are mixed, a precipitation reaction occurs. According to solubility rules, sulfides are generally insoluble, except for those of group 1 elements (like Na) and ammonium. Iron sulfide, which is not an exception to this rule, will precipitate as a solid. The black colored precipitate that forms is likely to be FeS (Iron(II) sulfide).
The relevant reaction can be represented by the ionic equation: Fe2+ (aq) + S2- (aq) → FeS (s), where the precipitate is the insoluble iron(II) sulfide.
While the information provided with the question includes several reactions and solubility examples, the key to answering this specific question is understanding the solubility of sulfides and that iron can form a black colored sulfide precipitate.
Write a chemical equation that describes the dissolving of solid magnesium nitrate, Mg(NO3)2, in water.
Answer:
Your answer is Mg(NO3)2, in water Mg(NO3)2(aq) → Mg2+(aq) + 2NO3-(aq)
Explanation:
The sign of δ g predicts whether the formation of the products in a reaction is favored. if the value is positive, the formation of the products in a reaction is:
Which ions are spectator ions in the formation of a precipitate of agcl via combining aqueous solutions of cocl2 and agno3?
The blue color in some fireworks occurs when copper chloride is heated to approximately
Kinetic energy differs from chemical energy in that
Explain why water has a different boiling point at an elevation of 3000 meters than it does at sea level
Answer:
The lower the pressure the lower the temperature, thus, at 3000 m the pressure is lower, therefore the boiling temperature is lower than at 0 m.
Explanation:
Hello,
In this case, the boiling point of water at the sea level is about 100 °C whereas at 3000 m is about 89.5 °C since the pressure at higher altitudes is less than the atmospheric pressure. In such a way, considering a directly proportional relationship between pressure and temperature, the higher the pressure the higher temperature (sea level) whereas the lower the pressure the lower the temperature (at 3000 m)
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What ion carries two negative charges and is isoelectronic with k+?
Has anyone done the chemical reactions lab in chemistry on k12?? can someone help me do it
The average kinetic energy of the particles in an object is directly proportional to its
a. heat.
b. volume.
c. temperature.
d. potential energy.
Answer: c) temperature
Explanation:
Kinetic energy is the energy possessed by an object by virtue of its motion.
Average kinetic energy is defined as the average of the kinetic energies of all the particles present in a system. It is determined by the equation:
[tex]K=\frac{3RT}{2}[/tex]
From above, it is visible that kinetic energy is directly related to the temperature of the system. So, if temperature is more, average kinetic energy of the system is more and vice-versa.
Imagine you have dissolved a small amount of baking soda in a glass of water. Identify the solute and the solvent
Gallionella bacteria can get energy from the reaction fe2+ → fe3+. this reaction is an example of
Which two groups of organic compounds serve as energy sources?
How do atoms form a new substance?
A :By sharing electrons with each other
B: By losing neutrons to each other
C: By gaining electrons from each other
D: By losing electrons
Your answer is A. Let me know if you need anything else!
What do you predict will happen in two weeks time to seedling (B)?
The leaves will turn 180 degrees, and the stem will curl 90 degrees downwards.
The stem will turn 90 degrees downward, and the root will curl 90 degrees upwards.
It will die because it is lying on its side.
The root will turn 90 degrees downward, and the stem will curl 90 degrees upwards.
Answer:
The root will turn 90 degrees downward, and the stem will curl 90 degrees upwards.
Explanation:
Answer:
The root will curl down, and the stem will curl up.
this is for exabit A
How do moss leaves and fish differ? How are they the same?
What does the subscript 2 indicate in the compound mgcl2?
In the hydrocarbon (a) what is the hybridization at each carbon atom in the molecule? (b) how many s bonds are there in the molecule? (c) how many p bonds? (d) identify all the 120° bond angles in the molecule. [section 9.6]
Final answer:
In ethylene, both carbon atoms are sp2 hybridized and form a planar shape with 120° bond angles. In allene, the central carbon is sp hybridized with 180° bond angles, while the terminal carbons are sp2 hybridized with 120° bond angles, with hydrogen atoms at the central carbon in perpendicular planes.
Explanation:
Hybridization of Carbon Atoms in Hydrocarbons
When determining hybridization at carbon atoms within hydrocarbons such as ethylene (C2H4) or allene (H2C=C=CH2), we consider the number of atoms directly bonded to a carbon atom. In ethylene, both carbon atoms are sp2 hybridized because they each make three sigma (σ) bonds - two to hydrogen atoms and one to each other - and one pi (π) bond is shared between them, forming a double bond (C=C). As for allene, the central carbon is sp hybridized due to possessing two π bonds, one with each of the adjacent carbons, while the terminal carbon atoms are sp2 hybridized.
There are multiple types of bonds in a C=C bond; a σ bond and a π bond. A C=C bond includes one σ bond that results from the head-on overlap of sp2 hybrid orbitals and one π bond that results from the side-to-side overlap of the unhybridized p orbitals.
The shape of the ethene molecule is planar with approximately 120° bond angles due to the sp2 hybridization. In contrast, the allene molecule has a more complex structure where the central carbon has 180° bond angles, and the terminal carbons have 120° bond angles. The hydrogen atoms on the central carbon of allene are in perpendicular planes to each other due to the nature of its hybridization.
In a hydrocarbon, each carbon atom is sp3 hybridized, forming sigma bonds. There are no pi bonds, and all bond angles are approximately 109.5°, representing tetrahedral geometry.
(a) The hybridization at each carbon atom in a hydrocarbon can be determined using the formula "Hybridization = 1/2(V + M - C + A)," where V is the number of valence electrons, M is the number of monovalent atoms, C is the cation charge, and A is the anion charge. For carbon in a hydrocarbon, V = 4, M = 4, and C = A = 0 for neutral carbon. Substituting these values, the hybridization is 1/2(4 + 4 - 0 + 0) = 1/2(8) = 4. Therefore, each carbon atom in the hydrocarbon is sp3 hybridized.
(b) In a hydrocarbon, each bond formed between carbon atoms is a sigma (σ) bond. Thus, the number of sigma bonds is equal to the number of single bonds in the molecule.
(c) A hydrocarbon consists only of single bonds, so there are no pi (π) bonds.
(d) In a hydrocarbon, all the bond angles are approximately 109.5°, corresponding to the tetrahedral geometry of sp3 hybridized carbon atoms.
The question probable may be:
In the hydrocarbon (a) what is the hybridization at each carbon atom in the molecule? (b) how many s bonds are there in the molecule? (c) how many p bonds? (d) identify all the 120° bond angles in the molecule.
Each atom is left with a ______ outer shell?
Which of the subatomic particles is most responsible for the chemical properties of an element?
during the process of erosion and deposition sediments are the____?
Question 3 options: how many moles of argon atoms are present in 11.2 l of argon gas at stp?
It is known that at if a gas is identified to be as ideal gas then, at STP, the volume of 1 mole of that gas is equal to 22.4 L. Using this fact and the given volume in this item, we determine the number of moles as that below.
n = (11.2 L of argon)(1 mol argon / 22.4 L of argon)
n = 0.5 moles
Answer: 0.5 moles
The reaction pcl3(g)+cl2(g)←−→pcl5(g) has kp=0.0870 at 300 ∘c. a flask is charged with 0.50atmpcl3, 0.50atmcl2, and 0.20atmpcl5 at this temperature. part a use the reaction quotient to determine the direction the reaction must proceed in order to reach equilibrium.
Given, equilibrium constant Kp = 0.0870
Pressure of PCl₃ = 0.50 atm
Pressure of Cl₂ = 0.50 atm
Pressure of PCl₅ = 0.20 atm
Reaction quotient, Q = [tex]\frac{0.20 atm}{0.50 atm x 0.50 atm}[/tex]
Q = 0.8
Q > K, net reaction is to the left
Q= K, no net reaction
Q < K, net reaction is to the right
Q = 0.8 and Kp = 0.0870
Q is greater than K, so the net reaction is to the left or to the reactant side.
Therefore, the reaction must proceed to the left or to the reactant side in order to reach equilibrium.
Photochemical smong result from the interaction of pollution in the presence of