What mass of 14C, with a half-life of 5730 y, do you need to provide a decay rate of 280.0 Bq?
What mass of 14C, with a half-life of 5730 y, do you need to provide a decay rate of 280.0 Bq? The mass of 14C is 14.00 u, and 1 u = 1.6605 × 10-27 kg.
A) 8.68 × 10-13 kg B) 5.38 × 10-19 kg C) 1.70 × 10-12 kg D) 3.84 × 10-20 kg
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What mass of 14C, with a half-life of 5730 y, do you need to provide a decay rate of 280.0 Bq?
What mass of 14C, with a half-life of 5730 y, do you need to provide a decay rate of 280.0 Bq?
This problem has been solved!See the answerWhat mass of 14C, with a half-life of 5730 y, do you need to provide a decay rate of 280.0 Bq? The mass of 14C is 14.00 u, and 1 u = 1.6605 × 10-27 kg.A) 8.68 × 10-13 kg B) 5.38 × 10-19 kg C) 1.70 × 10-12 kg D) 3.84 × 10-20 kg
Natural potassium contains 40K, which has a half-life of 1.277×109 y. What mass of 40K in...
Natural potassium contains 40K, which has a half-life of 1.277×109 y. What mass of 40K in a person would have a decay rate of 4140 Bq? What is the fraction of 40K in natural potassium, given that the person has 140 g in his body? (These numbers are typical for a 70-kg adult.)
Question 2 You will need statistical software to complete this question. From UTS:Online Assessment-Assignment B,...
Question 2 You will need statistical software to complete this question. From UTS:Online Assessment-Assignment B, download the data set icecream2019.csv. The data set contains 12 months of data. The key variables are described as follows: Sales Per-capita ice-cream sales during the month Rain-average rainfall during the month (in mm) Maxtemp average daily maximum temperature (in degrees Celsius) during the month (a) (lpt) Generate the logarithm of each of the three variables. Use software to construct the following three scatter plots...
please do 3-7 thank you 2. 3. 4. Repeat steps 0.a.-f. for TITRA2 and TITRA3. Write...
please do 3-7 thank you
2. 3. 4. Repeat steps 0.a.-f. for TITRA2 and TITRA3. Write the balanced chemical equation for the reaction between your unknown acid and sodium hydroxide. The generalized chemical formula of your acid (HxA) is found on the unknown sample bottle. “X” denotes the number of hydrogen's that react with the hydroxide on the sodium hydroxide. Go back to the TITRA1 D2 EXPANDED graph and determine the equivalence point volume of sodium hydroxide used to titrate...
only questions number: #3,6,8,16,19,22 Δι CH 122 - Practice Problems for Chapter 12 Do NOT use...
only questions number: #3,6,8,16,19,22
Δι CH 122 - Practice Problems for Chapter 12 Do NOT use this problem set solely as test preparation. This problem set does NOT cover everything that we have discussed in class. You will still need to study class materials in order to do well on the learning assessment. 1. Of the following all are valid units for a reaction rate except A. moll B. M/S C. molhr D.g's E.molle 2. Which one of the following...
Need answers. thank you VOCABULARY BUILDER Misspelled Words Find the words below that are misspelled; circle...
Need answers. thank you
VOCABULARY BUILDER Misspelled Words Find the words below that are misspelled; circle them, and then correctly spell them in the spaces provided. Then fill in the blanks below with the correct vocabulary terms from the following list. amino acids digestion clectrolytes nutrients antioxident nutrition basal metabolic rate extracellulare oxydation calories fat-soluble presearvatives catalist glycogen processed foods cellulose homeostasis saturated fats major mineral coenzyeme trace minerals diaretics metabolism water-soluable 1. Artificial flavors, colors, and commonly added to...
All of the following questions are in relation to the following journal article which is available...
All of the following questions are in relation to the following journal article which is available on Moodle: Parr CL, Magnus MC, Karlstad O, Holvik K, Lund-Blix NA, Jaugen M, et al. Vitamin A and D intake in pregnancy, infant supplementation and asthma development: the Norwegian Mother and Child Cohort. Am J Clin Nutr 2018:107:789-798 QUESTIONS: 1. State one hypothesis the author's proposed in the manuscript. 2. There is previous research that shows that adequate Vitamin A intake is required...
Question 2 You will need statistical software to complete this question. From UTS:Online Assessment-Assignment B, download the data set icecream2019.csv. The data set contains 12 months of data. The key variables are described as follows: Sales Per-capita ice-cream sales during the month Rain-average rainfall during the month (in mm) Maxtemp average daily maximum temperature (in degrees Celsius) during the month (a) (lpt) Generate the logarithm of each of the three variables. Use software to construct the following three scatter plots...
please do 3-7 thank you
2. 3. 4. Repeat steps 0.a.-f. for TITRA2 and TITRA3. Write the balanced chemical equation for the reaction between your unknown acid and sodium hydroxide. The generalized chemical formula of your acid (HxA) is found on the unknown sample bottle. “X” denotes the number of hydrogen's that react with the hydroxide on the sodium hydroxide. Go back to the TITRA1 D2 EXPANDED graph and determine the equivalence point volume of sodium hydroxide used to titrate...
only questions number: #3,6,8,16,19,22
Δι CH 122 - Practice Problems for Chapter 12 Do NOT use this problem set solely as test preparation. This problem set does NOT cover everything that we have discussed in class. You will still need to study class materials in order to do well on the learning assessment. 1. Of the following all are valid units for a reaction rate except A. moll B. M/S C. molhr D.g's E.molle 2. Which one of the following...
Need answers. thank you
VOCABULARY BUILDER Misspelled Words Find the words below that are misspelled; circle them, and then correctly spell them in the spaces provided. Then fill in the blanks below with the correct vocabulary terms from the following list. amino acids digestion clectrolytes nutrients antioxident nutrition basal metabolic rate extracellulare oxydation calories fat-soluble presearvatives catalist glycogen processed foods cellulose homeostasis saturated fats major mineral coenzyeme trace minerals diaretics metabolism water-soluable 1. Artificial flavors, colors, and commonly added to...
All of the following questions are in relation to the following journal article which is available on Moodle: Parr CL, Magnus MC, Karlstad O, Holvik K, Lund-Blix NA, Jaugen M, et al. Vitamin A and D intake in pregnancy, infant supplementation and asthma development: the Norwegian Mother and Child Cohort. Am J Clin Nutr 2018:107:789-798 QUESTIONS: 1. State one hypothesis the author's proposed in the manuscript. 2. There is previous research that shows that adequate Vitamin A intake is required...
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