Question
In: Chemistry
A) Neutron activation analysis for a sample of a rock revealed the presence of 5926Fe ,which...
A) Neutron activation analysis for a sample of a rock revealed the presence of 5926Fe ,which has a half-life of 46.3 days . Assuming the isotope was freshly separated from its decay products, what is the mass of 5926Fe in a sample emitting 1.00 mCi of radiation?
B) BNCT relies on the initial targeting of tumor cells by an appropriate chemical compound tagged with 10 5B, which preferentially concentrates in tumor cells. During the irradiation of the tumor site by neutrons (10n) the 10 5Babsorbs a low-energy neutron (10n), and it ejects an energetic short-range alpha particle(42α or 42He) and lithium ion along with gamma radiation (γ). This radiation deposits most of its energy within the cell containing the original 10 5B atom. Therefore, if a higher concentration of 10 5Bexists in tumor cells relative to other normal tissues, a concomitantly higher dose will be delivered to the tumor cells during neutron irradiation.
What is the nuclear reaction that takes place in the tumor cell?
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
A 5.91 g unknown sample analyzed by elemental analysis revealed a composition of 37.51 % C....
A 5.91 g unknown sample analyzed by elemental analysis revealed
a composition of 37.51 % C. In addition, it was determined that the
sample contains 1.4830 x 10^23 hydrogen atoms and 1.2966 x 10^23
oxygen atoms. What is the empirical formula?
Descriptive analysis revealed that 68% of students passed Test 1. Suppose a random sample of 18...
Descriptive analysis revealed that 68% of students passed Test
1. Suppose a random sample of 18 students is selected and defined
ˆp as the proportion of students in the sample who passed Test
1.
Determine the mean of the sampling distribution of ˆp.
μˆp=
Determine the standard deviation of the sampling distribution of
ˆp. Round the solution to six decimal places.
σˆp=
Determine the probability that between 63.3% and 77.3% of a random
sample of 18 students passed Test 3....
The results of your patient’s wound culture just arrived, and Gram staining revealed the presence of...
The results of your patient’s wound culture just arrived, and
Gram staining revealed the presence of pink, rod-shaped bacterial
cells organized in pairs. You quickly realize that this patient
could be at risk for developing fever and shock. Explain how the
culture results indicated this potential risk.
(a) Schematically explain how size of a rock sample affects the strength of the rock in...
(a) Schematically explain how size of a rock sample affects the
strength of the rock in a triaxial experiment. (4.0 mark) (b) Using
a schematic graph explain how different loading rates affect the
elastic properties and strength of the rock. (4.0 mark)
which of the following activity most likely lead to activation of protein kinase A 1. activation...
which of the following activity most likely lead to activation
of protein kinase A
1. activation of p13 kinase and downstream Rac GTPase
2. cytosolic Catt change
3. activation of adenylyl cyclase by Gx subunit
4. activation of PLC by GBY subunits
the observation that G-actin subunits tend to be incorporated
into F-actin at the barbed end and released from the pointed end is
known as
1. treadmilling
2. dynamic instability
3. G-protein coupled incorporation
4. fluorescence recovery after photobleaching
Describe the experiments that revealed the structure of the genetic material. If a sample of DNA...
Describe the experiments that revealed the structure of the
genetic material. If a sample of DNA contains 8% adenine (A), then
what are the pwecentage of thymine (T), cytosine(C), and
guanine(G).?
Consider two populations. A random sample of 28 observations from the first population revealed a sample...
Consider two populations. A random sample of 28 observations
from the first population revealed a sample mean of 40 and a sample
standard deviation of 12. A random sample of 32 observations from
the second population revealed a sample mean of 35 and a sample
standard deviation of 14.
(a) Using a .05 level of significance, test the hypotheses !H0 :
μ1 − μ2 = 0 and !H1 : μ1 − μ2 ≠ 0, respectively. Explain your
conclusions.
(b) What...
Consider two populations. A random sample of 28 observations from the first population revealed a sample...
Consider two populations. A random sample of 28 observations
from the first population revealed a sample mean of 40 and a sample
standard deviation of 12. A random sample of 32 observations from
the second population revealed a sample mean of 35 and a sample
standard deviation of 14.
(a) Using a .05 level of significance, test the hypotheses H0 :
μ1 − μ2 = 0 and H1 : μ1 − μ2 ≠ 0, respectively. Explain your
conclusions.
(b) What...
A random sample of size 18 taken from a normally distributed population revealed a sample mean...
A random sample of size 18 taken from a normally distributed
population revealed a sample mean of 100 and a sample variance of
49. The 95% confidence interval for the population mean would
equal:
a)93.56 - 103.98
b)97.65 – 107.35
c)95.52 -104.65
d)96.52 – 103.48
A sample of 800 computer chips revealed that 75% of the chips do not fail in...
A sample of 800 computer chips revealed that 75% of the chips do
not fail in the first 1000 hours of their use. The company's
promotional literature claimed that more than 72% do not fail in
the first 1000 hours of their use. Is there sufficient evidence at
the 0.01 level to support the company's claim?
Step 1 of 1:
State the null and alternative hypotheses for the above
scenario.
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- 1. Consider the following nuclides: &
- In general, teams can be described three ways. Name and define each.
- JAVASCRIPT: Please create an array of student names and another array of student grades. - Create...
- Topic - Construction: Structural, loads, tension 1.) Explain why pure tension members are the most efficient...
- Procter and Gamble (PG) paid an annual dividend of $ 1.62$1.62 in 2009. You expect PG...
- locate a recent case of online child pornography. Write a summary of the incident and describe...
- #Python 5. Write function called evaluate() that evaluates the following Python expressions or assignments as specified:...
ADVERTISEMENT