A few minutes after the Big Bang, the first fusion reaction occurred in the early universe....
A few minutes after the Big Bang, the first fusion reaction occurred in the early universe. It was n + p → d + γ. Compute Q for this reaction.
Homework Answers
Add Answer to:
A few minutes after the Big Bang, the first fusion reaction
occurred in the early universe....
What elements were created in the big bang? During what time period in the early universe...
What elements were created in the big bang? During what time period in the early universe did nucleosynthesis occur? Why just during this period? Describe qualitatively why the hot big bang model predicts that the universe should contain ∼26% by mass helium. Why is the present deuterium abundance sensitive to the value of Ω?
Within the first second after the Big Bang the universe was filled with high-energy, gamma-ray photons....
Within the first second after the Big Bang the universe was filled with high-energy, gamma-ray photons. These photons created huge numbers of elementary particles and their antiparticles through pair production. What happened to these particles? They are still here. They combined to create the first atoms and molecules that compose the physical universe. The particles are still with us as atoms and molecules, but almost all of the antiparticles disappeared. These particle-antiparticle pairs annihilated to produce more photons. This pair...
In the present theory of the Big Bang, what significant event occurred at about 400,000 years...
In the present theory of the Big Bang, what significant event occurred at about 400,000 years after the universe started expanding? The primordial helium in the universe was produced. The universe became transparent to neutrinos. The temperature of the cosmic background radiation had cooled to its present level of about 3 K. The universe became transparent to photons of radiation.
How and why does the CMBR, redshifts of distant galaxies, and relative abundances of the elements support a beginning to our universe? About 380,000 years after the big bang, the universe became trans...
How and why does the CMBR, redshifts of distant galaxies, and relative abundances of the elements support a beginning to our universe? About 380,000 years after the big bang, the universe became transparent to light. What had to occur for this to happen and what remnant is left behind that we can see today? Go to Planck and The Cosmic Microwave Background and answer the following: How accurate is the the Planck data? What do the different colors help us...
JUST CHOOSE ABCD QUESTION 6 When was most of the Helium in the Universe formed? A....
JUST CHOOSE ABCD QUESTION 6 When was most of the Helium in the Universe formed? A. Throughout the history of the Universe, by nuclear fusion in stars B. A few minutes after the Big Bang C. At the time of Recombination D. At the time of the Big Bang 10 points QUESTION 7 Based on current estimates of the value of Hubble?s constant, how old is the universe? A. more than 100 billion years old B. between 5 and...
A first-order reaction (A → B) is known to be 40% complete after 30 minutes in...
A first-order reaction (A → B) is known to be 40% complete after 30 minutes in a batch reactor. How long is required to achieve 95% completion? Assume the initial concentration of the reactant is 100 mg/L.
8.186 The number N(t) of phone calls arriving at a switchboard during the first t minutes...
8.186 The number N(t) of phone calls arriving at a switchboard during the first t minutes time that elapses between when you start your stopwatch and when the nth phone call arrives. after you start your stopwatch has a Poisson distribution with parameter 3.8t. Let W be the a) On average, how many phone calls arrive during the first t minutes? b) If it is known that Wi > t, what can be said about N(t)? Similarly, what would Wit...
d listing r. (Individ For a particular first-order reaction, it takes 24 minutes for the concentration...
d listing r. (Individ For a particular first-order reaction, it takes 24 minutes for the concentration of the reactant to decrease to 25% of its initial value, what is the value for rate constant (in S-1) for the reaction? A) 2.0-104 s-1 B)9.6 x 10-4 s-1 C) 1.2 × 10-2 s-1 D)5.8 102s-1 12. In the first order reaction A → products, [A1-0.400 M initially and 0250 M after 15.0 mun, what willl after 175 min? e A) 1.67-10-3 M...
The power density (Watts per kg) produced by a given nuclear reaction in a gas of...
The power density (Watts per kg) produced by a given nuclear reaction in a gas of density ρ between species a and b with mass fractions X, charge numbers Z and atomic mass numbers A varies as 1/6 1/3] where Q and So are constants for the given reaction, m is the reduced mass, and Eg is the Gamow energy: th (MKS units). (a) Show that the dependence of e at a temperature T near To can be approximated as...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k k and not on the reactant concentration. It is expressed as t1/2=0.693k t 1 / 2 = 0.693 k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t1/2=1k[A]0. A certain first-order reaction (A→products A → p r o d u c t s ) has a rate constant of 9.30×10−3...
Within the first second after the Big Bang the universe was filled with high-energy, gamma-ray photons. These photons created huge numbers of elementary particles and their antiparticles through pair production. What happened to these particles? They are still here. They combined to create the first atoms and molecules that compose the physical universe. The particles are still with us as atoms and molecules, but almost all of the antiparticles disappeared. These particle-antiparticle pairs annihilated to produce more photons. This pair...
In the present theory of the Big Bang, what significant event occurred at about 400,000 years after the universe started expanding? The primordial helium in the universe was produced. The universe became transparent to neutrinos. The temperature of the cosmic background radiation had cooled to its present level of about 3 K. The universe became transparent to photons of radiation.
8.186 The number N(t) of phone calls arriving at a switchboard during the first t minutes time that elapses between when you start your stopwatch and when the nth phone call arrives. after you start your stopwatch has a Poisson distribution with parameter 3.8t. Let W be the a) On average, how many phone calls arrive during the first t minutes? b) If it is known that Wi > t, what can be said about N(t)? Similarly, what would Wit...
d listing r. (Individ For a particular first-order reaction, it takes 24 minutes for the concentration of the reactant to decrease to 25% of its initial value, what is the value for rate constant (in S-1) for the reaction? A) 2.0-104 s-1 B)9.6 x 10-4 s-1 C) 1.2 × 10-2 s-1 D)5.8 102s-1 12. In the first order reaction A → products, [A1-0.400 M initially and 0250 M after 15.0 mun, what willl after 175 min? e A) 1.67-10-3 M...
The power density (Watts per kg) produced by a given nuclear reaction in a gas of density ρ between species a and b with mass fractions X, charge numbers Z and atomic mass numbers A varies as 1/6 1/3] where Q and So are constants for the given reaction, m is the reduced mass, and Eg is the Gamow energy: th (MKS units). (a) Show that the dependence of e at a temperature T near To can be approximated as...
Most questions answered within 3 hours.
-
If
the more comprehensive data is available in MEPS, why does the NHIS
still exist? How...
asked 18 minutes ago -
Koo argues that the Japanese economy in the 1990s suffered from
a balance sheet recession. What...
asked 12 minutes ago -
Automobile mechanics conduct diagnosis tests on 150 new cars of
particular make and model to determine...
asked 6 minutes ago -
11) Find the proceeds of a 5 year non-interest
bearing note for $6500 discounted 2.5 years...
asked 13 minutes ago -
Required: Prepare the consolidated financial statements of
Griffin Ltd at 30 June 2019.
Griffin Ltd is...
asked 21 minutes ago -
1.How large must the coefficient of static friction be between
the tires and the road if...
asked 37 minutes ago -
What is the time complexity (Big-O) of the following code?
class Main
{
// Recursive...
asked 36 minutes ago -
Economists look at any situation in terms of its component
parts: the people making decisions, the...
asked 42 minutes ago -
What is a population?
Select one:
a. All of the individual organisms belonging to the same...
asked 46 minutes ago -
You have a yeast cell culture with a concentration of 5x10^4
cells/ml. If you dilute this...
asked 51 minutes ago -
In which direction the Reaction goes? Show detailed process.
SeO3 + 2ClO2. + 2H3O <---> Se...
asked 1 hour ago -
Unexposed silver halides are removed from photographic film when
they react with sodium thiosulfate
(Na2S2O3, called...
asked 1 hour ago