Use the equation to answer the prompt. A student claims that the equation models beta-minus decay because the atomic number of the nucleus decreases by one. In one or two sentences, explain the error in the student's reasoning.
Answers
The error in the student's reasoning happened as they get confused between the beta minus decay and beta plus decay.
What is beta minus decay?A neutron is converted into a proton in beta minus, increasing the atomic number of the atom.
The proton is positive, while the neutron is neutral. The nucleus also produces an electron and an antineutrino in order to ensure charge conservation.In the given question beta minus decay is not occur as atomic number of the daughter nuclei does not increases. Rather than this in the given decay atomic mass of the daughter nuclei is less than the parent nuclei means plus beta decay is happened there.
Hence the error is in predicting the correct particle with charge.
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Related Questions
what is the mass in grams for 7.14x10^3 mol of PCI3?
Answers
Answer:
980,536.2 grams
Explanation:
The mass of a compound is equal to its moles times its molar mass.
The molar mass of PCl3 is 137.33 g/mol
137.33 x 7.14 x 10^3 = 980,536.2
All stoichiometry calculations involve what important step?
metric fraction
molar mass fraction
molecules fraction
mole ratio fraction
DONE
Answers
Answer:
Mole Ratio Fraction
Explanation:
That's the answer.......
Answer:
DExplanation:
Mole Ratio Fraction
17. Explain the relationship between atmospheric pressure and the actual boiling point of a liquid.
Answers
Answer:
The lower the atmospheric pressure, the lower the boiling point will be. The greater the pressure, the more energy required for liquids to boil, and the higher the boiling point.
A 500.0 ml. Glass filled with air is placed into water up-side-down while at 7.0°C. The water is heated to 77°C. How much air bubbles out from under the glass?
Answers
The answer is 125 ml air bubbles come out from under the glass
What is Charle's Law ?Charles's Law describes the directly proportional relationship between the volume and temperature (in Kelvin) of a fixed amount of gas, when the pressure is held constant.
V∝T
or express from two volume/temperature points:
[tex]\rm\dfrac{V_{1}}{T_{1}} =\dfrac{V_{2}}{T_{2}}[/tex]
This equation can be used to solve for initial or final value of volume or temperature
under the given condition that pressure and the number of mole of the gas stay the same.
It is given that
V₁ = 500 ml
T₁= 7 + 273 = 280 K
T₂ = 77+273 = 350 K
V₂= ?
Substituting the values in the above in the above equation
[tex]\rm\dfrac{500}{280}} =\dfrac{V_{2}}{350}[/tex]
V₂ = 625 ML
The volume of the glass is still 500 ml,
so, the volume of bubbles is 125 ml.
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Which is a non renewable resource A.oil b.sunlight c. Water d.wood
Answers
Answer:
(a) Oil
Explanation:
Oil is a renewable source, along with natural gas, coal, and nuclear energy.
lmk is this helped you
~rere
Answer:
A. Oil
Explanation:
Oil, along with natural gas, and coal are called fossil fuels and fossil fuels were formed within the Earth from dead plants and animals millions of years ago.
what is the answer to this question? i do not know what the names are
Answers
ethene is C2H4
The answer is Ethene.
Produced by heating natural gas.
Continued deforestation will most likely lead to _______. a. a decrease in the number of endangered species b. an increase in the number of endangered species c. an increase in the number of oil and chemical spills d. a decrease in glacial melting please select the best answer from the choices provided a b c d
Answers
Deforestation often leads to an increase in the number of endangered species of plants and or animals.
What is deforestation?Deforestation refers to the conversion of forests to non-forest uses. In other words, it is the removal of forest layers for non-forest reasons.
Since forests represent a hotspot for plant and animal biodiversity, their removal automatically means a decrease in biodiversity.
Endangered species are species of plants and animals that are under the threat of going extinct either due to natural or anthropological effects.
Thus, deforestation often leads to an increase in the number of endangered species.
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Answer:
b
Explanation:
Solid copper (III) wire reacts with sulfur in a synthesis reaction. If 1.35*10^25 atoms of
copper react with 15.0 grams of sulfur, how many grams of product will be produced and
how much excess reactant will be left over?
Answers
Moles of copper
No of molecules/Avagadro no1.35×10²⁵/6.022×10²³0.022×10^²2.2molesMass of copper
2.2(63.5)13.97gNow
According to law of conservation of mass
Mass of products=Mass of reactants
13.97+1528.97gA scientist finds a fossil that she thinks might make a good index fossil.
Which characteristic does this fossil most likely have?
Answers
Answer: A fossil will usually have remains or impressions of an animal or plant.
Answer:
the answer is b
Explanation:
trust me
what is the molar mass of H,S
Answers
Answer:
the answer to your question is 1.00784 u
molar mass of H₂S
= 2.Ar H + 1.Ar S
= 2. 1,00784 u + 1. 32,065 u
= 34.08068 u
Complete the sentence using the word refracting, radlo, or space.
Telescopes that use lenses to bend light are called
telescopes.
Answers
Answer:
Refracting
Explanation:
Mark the word bend lightHence light travels through one medium to another it bends down which is called refraction.The bendness depends upon the refractive index of medium.Identify the acid, base, conjugate acid, and conjugate base in the following reaction:
HSO4- + NH3 = SO4-2 + NH4+
Answers
Answer:
Acid: HSO4-
Base: NH3
Conjugate Acid: NH4+
Conjugate Base: SO4-2
Explanation:
HSO4- gives a H+ to NH3 making NH4+ the conjugate acid.
Same can be said to the base.
Type the correct answer in the box. given: cac2 n2 → cacn2 c in this chemical reaction, how many grams of n2 must be consumed to produce 265 grams of cacn2? express your answer to three significant figures. the reaction requires grams of n2.
Answers
The amount, in grams, of [tex]N_2[/tex] that will be consumed to produce 265 grams of [tex]CaCN_2[/tex] will be 80.61 grams
Stoichiometric calculationFrom the equation of the reaction:
[tex]CaC_2 + N_2 --- > CaCN_2 + C[/tex]
The mole ratio of [tex]N_2[/tex] consumed to [tex]CaCN_2[/tex] produced is 1:1.
Mole of 265 grams of [tex]CaCN_2[/tex] = 265/92.11 = 2.88 moles
Equivalent moles of [tex]N_2[/tex] = 2.88 moles
Mass of 2.88 moles [tex]N_2[/tex] = 2.88 x 28.02 = 80.61 grams
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) experimental evidence indicates that the nucleus of an atom
a) contains most of the mass of the atom
b) contains a small percentage of the mass of the atom
c) has no charge
d) has a negative charge
Answers
d) This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.
What substance(s) do you predict will be able to diffuse through the cell membrane and why?
Answers
Consider substances that can easily diffuse through the lipid bilayer of the cell membrane, such as the gases oxygen (O2) and carbon dioxide (CO2). These small, fat soluble gasses and other small lipid soluble molecules can dissolve in the membrane and enter or exit the cell following their concentration gradient.
Name the following compound:
CH3 - CH₂ - CH₂ - CH₂ - OH
Answers
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
Here we go ~
There are 4 carbon atoms in the chain, so it's prefix should be " But " and there are only sigma bonds, therefore the primary suffix will be " ane ", and the functional group attached to the end is " OH " denoting alcohol group, so the secondary suffix will be " ol "
Hence, the name of the compound will be ~
[tex]\qquad \sf \dashrightarrow \:Butan - 1 - ol[/tex]
or simply
[tex]\qquad \sf \dashrightarrow \: Butan ol[/tex]
balance following equation
H2 + _02 → _H20
Answers
Answer:
2H2+O2=2H20
Explanation: Since there are 2 Oxygen in the reactants then there must be 2 Oxygen in the products, meaning there is a coefficient of 2 in front of H20 and that makes there be 4 Hydrogen, so adjust the reactants (2 H2)
How many grams of sodium hydroxide, NaOH, are needed to make 355.0 mL of a 4.75M solution? The molar mass of NaOH is 40.00 g/mol
Answers
Answer:
4198.97404999
Explanation:
In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.
Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance.
If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100.
what are advantage of using alternatives to fossil fuels?
Answers
Answer:
Fossil fuels release greenhouse gases and are non renewable
What is a major problem with CFCs?
It is a greenhouse gas.
It does not readily break down in the atmosphere.
It isn't a good refrigerant.
It is toxic to breathe.
Answers
The major problem with CFCs is that It is a greenhouse gas, Option A is correct.
What are CFC's ?
Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine.
They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.
CFCs are classified as halocarbons, a class of compounds that contain atoms of carbon and halogen atoms
The major problem with CFC's is that they are green house gases
It destroys ozone in the upper atmosphere (stratosphere).
CFCs can produce more than 10,000 times as much warming, pound for pound, once they are in the air.
It is not only because of their dramatic warming potential but also
They were found to be the primary cause of the rapidly escalating destruction of the Earth’s ozone layer,
which protects the planet from dangerous, cancer-causing levels of ultraviolet radiation.
Therefore The major problem with CFCs is that It is a greenhouse gas, Option A is correct.
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Justify how dstv has been regarded as an example of a monopoly with the nature of product
Answers
When natural conditions are present in a free market then, the natural monopoly arises. Dstv is unique and has no other substituents that make them an example of monopoly.
What is a monopoly?Monopoly is the dominance of a single product, goods, service, business, etc. in the market or the economic sector that excludes the other competitors. They can be the single seller that sells in the business.
DStv is a monopoly in America and includes natural gases, electricity, and communication services. It has no other competitor in the market and has control over others. They are the sole service provider and have no close substitutes.
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Which type of wave pushes the medium in the direction of the wave? *
A. transverse wave
B. compression wave
C. neither A nor B
D. both A and B
Answers
Answer:
Neither because it’s a longitudinal wave that is supposed to be the answer
Explanation:
CH4(g) + 2O2 (g) →CO2(g) + 2H2O (l), ΔH = -890kj/mol
Calculate much heat is released when 3.5 moles of methane gas undergo a combustion reaction
Answers
A combustion reaction is a reaction that reacts with oxygen to produce the product. 3.5 moles of methane release - 3115 kJ/mol of heat.
What is a combustion reaction?A combustion reaction is a chemical reaction that involves the burning of the reactant in the presence of the oxygen molecule to release heat.
The balanced reaction of methane combustion is given as:
CH₄(g) + 2O₂ (g) → CO₂(g) + 2H₂O (l), ΔH = -890 kJ/mol
From the reaction, it can be said that 1 mole of methane combusts to produce -890kJ/mol enthalpy.
So, 3.5 moles will produce, 3.5 × -890kJ/mol = - 3115 kJ/mol.
Therefore, 3.5 moles of methane produce - 3115 kJ/mol heat.
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Describe the type of force which exists between particles in an Ideal gas. Explain why this type of force exists between the particles.
Answers
The Intermolecular force is a type of force which exists between particles in an Ideal gas.
What type of force which exists between particles in an Ideal gas?Intermolecular forces are considered weaker attractions that hold molecules in gas close together. This force of attraction is present between molecules or particles.
So we can conclude that the Intermolecular force is a type of force which exists between particles in an Ideal gas.
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compare fission and fusions.
Answers
A bat flew directly toward its cave at a constant velocity for 0.4seconds. It flew 80 centimeters in that time. What was its velocity?
Answers
Answer:
Frequency of the ultrasonic sound, f=1000kHz=10
6
Hz
Speed of sound in air, V
a
=340m/s
The wavelength (λ
r
) of the reflected sound is given by the relation:
λ
r
=V/f
=340/10
6
=3.4×10
−4
m.
(b) Frequency of the ultrasonic sound, f=1000kHz=10
6
Hz
Speed of sound in water, V
w
=1486 m/s
The wavelength of the transmitted sound is given as:
λ
r
=1486/10
6
=1.49×10
−3
m.
What will occur when the trough of Wave A overlaps the crest of Wave B?
Destructive interference will occur, causing the new wave to have more energy than Wave A or Wave B.
Constructive interference will occur, causing the new wave to have more energy than Wave A or Wave B.
Destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.
Constructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.
Answers
Answer:
Destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.
Explanation:
Destructive interference has lesser intensity.
When the trough of Wave A overlaps the crest of Wave B, destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B. Therefore, option C is correct.
What is interference and its types?Interference is the phenomenon that occurs when two or more waves meet and overlap with each other.
There are two types of interference: constructive interference and destructive interference.
Constructive Interference: This occurs when the crest of one wave overlaps with the crest of another wave or the trough of one wave overlaps with the trough of another wave. Destructive Interference: This occurs when the crest of one wave overlaps with the trough of another wave. The resulting wave has a lower intensity, which corresponds to a decrease in energy.Therefore, option C is correct.
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How can you tell if a substance is an acid or base?
Answers
Answer:
To determine whether a substance is an acid or a base, count the hydrogens on each substance before and after the reaction. If the number of hydrogens has decreased that substance is the acid (donates hydrogen ions). If the number of hydrogens has increased that substance is the base (accepts hydrogen ions
elect the correct answer. What is the formula of sulfurous acid? A. H2S B. HSO4 C. H2SO4 D. H2SO3
Answers
H2SO3 is the correct answer. I understand school is hard, but WORK HARDER!
how do energy sources poly a role in the rock formation?
Answers
Sun (radiation), winds (eolic) and water (hydraulic) are all sources of energy that work together during rock formation.
What is rock formation?The rock formation is a very slow process that occurs at a geological time, which may take millions of years.
During this period, rocks are shaped by different types of energy, especially radiation and erosion (wind and water bodies)
In conclusion, the sun (radiation), winds (eolic) and water (hydraulic) work together during rock formation.
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