11.
What is the missing product from this reaction?
32 32
15P → 16S +
a.
4.
2 He
b.
0
10
C.
0
or
d.
0
le
e.
0
1P
Answers
Answer:
good times
Explanation:
always nedded
Here the nuclear decay of phosphorous to give S-32 is an example of beta-decay. Hence, the emitted particle is an electron. Thus, option b is correct.
What is beta decay ?The heavy unstable radioactive isotopes undergo nuclear decay by the emission of alpha or beta particle. Thus, there are mostly two types of decays, alpha decay and beta decay.
In alpha decay, the isotope emits a helium nuclei. Hence, mass number decreases by 4 units and atomic number decreases by 2 units. In beta decay, mass number does not change but atomic number increases by 1.
Here, P-32 undergo beta -decay by emitting an electron to form S -32. Hence, atomic number is increased by one. Therefore, the mission product is an electron option b.
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Related Questions
what is the chemistry between us?
Answers
if the atoms that share electrons have an unequal attraction for the electrons, the bond is called
Answers
Answer:
A polar covalent bond is a covalent bond in which the atoms have an unequal attraction for electrons and so the sharing is unequal. In a polar covalent bond, sometimes simply called a polar bond, the distribution of electrons around the molecule is no longer symmetrical.
Explanation:
What is pseudoscience and how is it different from science
Answers
Answer:
a difference in attitude
Explanation:
It's just not science. ... The big difference Popper identifies between science and pseudo-science is a difference in attitude. While a pseudo-science is set up to look for evidence that supports its claims, Popper says, a science is set up to challenge its claims and look for evidence that might prove it false.
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When a solid air freshener gets smaller over time and runs out is it a physical change or chemical change? please say why?
Answers
Answer:
i think this would be an example of a physical change because here the substance is changing directly from a solid to a gas without passing through the liquid state which means that the composition of the substance has not changed and remains the same. This is also called sublimation.
PC13 ionic or covalent
Answers
Answer:
The bond between Phosphorus and Chlorine in PCl3 is covalent as chlorine needs one electron and phosphorus has metallic character and easily donate electron
10. 11. What is a crystal?
Answers
Answer:
there aren't any choices on the question so here's the closest i can give. A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure
Answer:
Definition of crystal :- A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. Example of crystal :-large crystals include snowflakes, diamonds, and table salt.Meaning of crystal :-.
A piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces. Ex:- "A quartz crystal".Highly transparent glass with a high refractive index. ex :- "A crystal chandelier"Compare the structure and bonding of the three compounds:
• carbon dioxide
•magnugum ondo
•silicon dioxide
(6 mark question)
Answers
Silicon dioxide is a covalent network solid. Magnesium oxide is an ionic compound while carbon dioxide is a covalent molecule.
Carbon dioxide is a covalent compound. The compound contains polar C-O bonds but overall the compound is nonpolar as such the molecules are held together by only weak dispersion forces.
The compound magnesium oxide is an ionic solid. It is composed of magnesium ions and oxygen ions in a crystal lattice. Owing to the fact that the ions are very small, the lattice energy is large and the compound is almost insoluble in water.
Silicon dioxide is a covalent network solid which is composed of chains of silicon - oxygen bonds. The network solid forms a very rigid structure having a high melting point.
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How does lemon juice stop an apple from turning brown?
Answers
Four students wrote down their descriptions of rotting.
Nick: Rotting is a chemical change that happens to fruit like strawberries or apples. Rotting happens slower when there is more heat.
Kevin: Rotting is a chemical change that happens to iron objects like nails. It causes iron objects to change color and texture.
Howie: Rotting is a physical change that happens to food like fruit. Rotting happens faster with increased heat and changes a fruits color and odor.
AJ: Rotting is a chemical change that affects food such as fruit. Rotting changes the fruits color and odor and happens faster with increased heat.
Which student had the best description of rotting?
Nick
Kevin
Howie
AJ
Answers
Hope this helps
Answer:
Technically only AJ got it correct Howie got it wrong because rotting is a chemical not a physical change AJ was correct becuase he knew what would make the fruit go faster so yes howie would have been right if he got the right kind change.
Explanation:
hope this help
Which gas makes your voice deeper or has the opposite effect on you than helium when you inhale it.
Answers
it’s an inert gas that is known to be six times heavier than the air we breathe. While Helium being lighter makes our voice higher, SF6 makes our voice deeper. The sound travels slower in denser gases which is why our voice will come out deeper and rather slow.
Answer:
Sulfur hexafluoride
Explanation:
It is heavier than air that we breathe so it has an opposite effect.
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what is the oxidation number of sulfur in the sulfate ion?
Answers
Answer:
+6
Explanation:
3. Explain why the statement "electrons are always located close to the nucleus of an atom" is not really accurate,
Answers
Answer:
Electrons are stored in different electron shells with the nucleus in the center. Depending on the size of the element, the electrons may need more shells, making the electrons further away from the nucleus.
Explanation:
Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit. the statement "electrons are always located close to the nucleus of an atom" is not really accurate.
What is atom?Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided.
In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge.
Electrons always move in fixed orbit around the nucleus with a particular force. Electrons may or may not be close to the nucleus. Depending on the size of the element, the electrons may need more shells, making the electrons further away from the nucleus.
Therefore, the statement "electrons are always located close to the nucleus of an atom" is not really accurate.
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Which description of salt is a physical property?
No combustion
Makes ionic bonds
Product of mixing acids and bases
Solid does not conduct electricity
Answers
Answer:
Solid and does not conduct electricity
Explanation:
Which of the following are needed for an electrical circuit? Choose all that apply
A.A mental conductor for electrons to pass through
B.light bulb
C.two negative ends to a battery
D.closed loop
E.charged battery to provide an electrical difference
Answers
Answer:
E\charged battery to provide electronic difference
ow does the food chain start? A Plant life uses energy from the sun to make food. B Insects like grasshoppers eat plant life. C Animals like rats eat insects. D Humans eat large animals and plant life
Answers
Which of the following is true for the percentage yield of a reaction?
А. It is the combined yield from the excess reactant and the limiting reactant.
B. It is the calculated yield of the product based on stoichiometry alone.
C. It is calculated based on stoichiometry as well as experimentation.
D. It is the yield of the product from the limiting reactant alone.
Answers
Answer:
It is always less than the theoretical yield
Explanation:
For many chemical reactions, the actual yield is usually less than the theoretical yield. This is due to possible loss in the process or inefficiency of the chemical reaction.
Explain what happens during soil depletion and also how we can help prevent this naturally without chemicals?
PLZ FAST TYY <3
Answers
Answer: create more healthy products for the soil and animals
Explanation:
Order the following elements according to the valence numbers from lowest to highest
1. Boron
2. Sodium
3. Chlorine
4. Beryllium
Answers
How many grams of oxygen would be contained in 4.00 L at 158kPa and 28 C?
Answers
Answer:
it would be 53
Explanation:
because 4.00 L at 158kPa and 28c would be 53 grams of oxygine
calculate the mass of sodium sample that it contains 2 Na atoms of sodium
please i need help with this ques.
Answers
Answer:
45.98 I believe if its wrong im sorry
The speed at which a chemical reaction proceeds is called
Answers
Answer:
Answer: Reaction Rate
Explanation:
reaction rate, in chemistry, the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.
why does a oxygen atom form a 2- ion
Answers
Answer:
It's because it has 2 electrons on its outer ring
Explanation:
It has a -2 ion due to it having 2 more electrons than protons making it an overall negative. It's well known in chemistry that the first ring can only hold 2 electrons while the second and furthermore can hold up to 8. But what happens when you have 9? a new ring starts and it would only contain 1 electron.. In our case here it has 2 more electrons than protons and those 2 electrons are located on the outer ring
There are 6. 022 Times. 1023 atoms of Hg in 1 mole of Hg. The number of atoms in 4. 5 moles of Hg can be found by multiplying 4. 5 by 6. 022 Times. 1023. Which is the number of atoms in 4. 5 moles of Hg, correctly written in scientific notation with the correct number of significant figures? 2. 7 Times. 1024 27 Times. 1023 2. 71 Times. 1024 27. 099 Times. 1023.
Answers
The number of atoms of Hg in 4.5 mole sample has been given as [tex]\rm 2.7099\;\times\;10^2^4[/tex]. Thus, option A is correct.
The number of atoms in a mole of sample has been given by Avogadro number. Avogadro number has been a constant and has been given the value of [tex]\rm 6.023\;\times\;10^2^3[/tex].
The number of atoms in a mole of sample has been given as:
[tex]\rm 1\;mole=\;6.022\;\times\;10^2^3[/tex]
The given sample has been consisted of 4.5 moles of Hg. Thus, the number of atoms in the sample has been given by:
[tex]\rm 1\;mole\;Hg=\;6.022\;\times\;10^2^3\;atoms\\4.5\;mol\;Hg=4.5\;\times\;6.022\;\times\;10^2^3\;atoms\\4.5\;mol\;Hg=27.099\;\times\;10^2^3\;atoms[/tex]
The scientific notation has been the short hand used for writing the numbers. The short hand for atoms in 4.5 moles of Hg has been [tex]\rm 2.7099\;\times\;10^2^4[/tex].
Thus, the number of atoms of Hg in 4.5 mole sample has been given as [tex]\rm 2.7099\;\times\;10^2^4[/tex]. Thus, option A is correct.
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PLEASE HELP CHEMISTRY
What is the hydronium ion concentration of a solution with a POH of 6.90?
O 6.29 x 10-7 M
6.53 x 10-7 M.
O 7.18 x 10-8 M
O 7.94 x 10-8 M
Answers
Answer:
O 7.94 x 10-8 M
Explanation:
Did the test
The hydronium ion concentration of a solution with a pOH of 6.90 is 7.94 × 10⁻⁸ M.
What is the relation between pH & pOH?Relation between the pH and pOH will be represented by the below equation as:
pH + pOH = 14
Given that pOH = 6.90
So, pH = 14 - 6.90 = 7.1
Also we know that, pH = -log[H⁺]
[H⁺] = [tex]10^{-pH}[/tex]
[H⁺] = [tex]10^{-7.1}[/tex]M
[H⁺] = 7.94 × 10⁻⁸ M
Hence the concentration of hydronium ion is [tex]10^{-7.1}[/tex] M.
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Someone please help with number 9.
Answers
Answer:
Its development and progression are usually linked to a series of changes in the activity of cell cycle regulators. For example, inhibitors of the cell cycle keep cells from dividing when conditions aren't right, so too little activity of these inhibitors can promote cancer.
Superficially, the connection between the cell cycle and cancer is obvious: cell cycle machinery controls cell proliferation, and cancer is a disease of inappropriate cell proliferation. Fundamentally, all cancers permit the existence of too many cells.
Explanation:
hope it helps
What is Jupiter’s strength of gravity?
Answers
Explanation: Jupiters surface gravity which is defined as the force of gravity at its cloud tops.
Which liquid has more density
Answers
Answer:
mercury i think
Explanation:
Answer:
Mercury is the densest liquid at standard conditions for temperature and pressure (STP). Also called quicksilver, mercury has been known for more than 3,500 years. It is an important metal in industry, but it is also toxic
Explanation:
All atoms of an element are______.
Points: 87
Answers
Answer:
Alike
Explanation:
PLEASE HELP WILL AMRK BRAINLIEST
what is the atomic mass of Na3PO4?
Answers
Answer:
163.94
Explanation:
Na = 22.99 (3)
P = 30.97
O = 16.00 (4)
22.99(3) + 30.97 +16.00(4) = 163.94
Hope that helps
I think.. sorry if I’m wrong! Have a nice day :)
How are osmosis and facilitated diffusion similar?
Answers
Answer:
I think it's is because during osmosis because when the cell duplicates in osmosis it divides into two smaller daughter cells; in diffusion there is a higher concentration near where it is but its getting smaller particles from where the source is
