If the value of x is postnatal age of 30 hours, what is the value for Yˆ or SBP for neonates ≤1,000 grams? Show your calculations. 208 EXERCISE 27 • Simple Linear Regression 6. In the legend beneath Figure 2, the authors give an equation indicating that systolic blood pressure is SBP = 50.3 + 0.12x. If the value of x is postnatal age of 30 hours, what is the value for Yˆ or SBP for neonates 1,001–1,500 grams?
We first separated each of the isotopes into their rightful groups and then proceeded to count the amount of pieces for each isotope. We then weighed one of each isotope on a scale to get the mass. In order to find the percentage of abundance we divided the number of particles of the isotope by the number of particles in the sample. To find the average atomic mass of Candium is calculate by multiplying the mass of the isotopes by the percentage of abundance, then adding the products. Data: Isotope | M & M’s | Skittles | Reece’s Pieces | Number of Particles | 35 | 27 | 49 | Mass (g) | 0.85g | 1.03g | 0.74g | Calculations: Percentage of abundance: Reece’s: 49/111= 0.44 x 100= 44% Skittles: 27/111= 0.243 x 100= 24.3% M & M’s: 35/111= 0.31 x 100= 31% Average Atomic mass: (44 x 0.74g) + (24.3 x 1.03g) + (31 x 0.85g)= 83.94g Conclusion: Candium had three isotopes, Reece’s Pieces, Skittles, and M & M’s.
From hot to cold or cold to hot? -Technically, if it were to be mixed like the example shown in class, there would be at equilibrium. But since the heat from one is 20℃ and the other is 80℃, we ended up with 60℃ as the final temperature. The heat would transfer from cold to hot because if we mixed 50g of the 20℃ and 30g of the 80℃, we would end up having more of the 100g of water at 20℃ and less of the 200g of water at 80℃. (c) If a sample of hot water is mixed with a sample of cold water that has twice its mass, predict the temperature change of each sample?
For example, when the amount of gas was doubled from 5.0 mL to 10.0 mL, the pressure is halved and the reading should have been 96.32 kPa as opposed to 104.54 kPa. This experiment correlated with the material present in our textbook in
What will be the cost to refine 10,000 barrels of oil from Alaska’s Prudhoe Bay, which requires 80% of the refinery’s capability? (20% of grade) 2000/(150-1.5x)= 2000/150-1.5(80)= 2000/30 66.67 b. What will be the cost to refine 10,000 barrels of oil from West Texas Intermediate, which requires 75% of the refinery’s capability? (20% of grade) 2000/(150-1.5x)= 2000/150-1.5(75)= 2000/37.5= 53.33 c. For what value is the equation undefined? (20% of grade) The equation is undefined at 100%, because 150-(1.5*100)=0 and you cannot divide by 0 2.
Practical 5 – Heavy Metals by Absorption Spectrometry Contents Aim - 1 Introduction 1 Procedure 2 Pre-laboratory exercises 2 Results and discussion 3 Conclusion 3 References 3 Aim – The aim of this practical is to determine the concentrations of each of Cu, Pb and Cd in an unknown solution with the use of Atomic Absorption Spectrometry. Introduction Atomic Absorption Spectrometry or ‘AAS’ is a spectrophotometric analysis technique that allows for both quantitative and qualitative determination of most elements. Each elemental metal absorbs ultraviolet light at a specific wavelength when excited by heat; this is the basis of atomic absorption spectrometry The procedure involves passing known concentrations of the element in solution through a nebulizer forming a mist. This mist is then aspirated into a flame forming gaseous atoms, elementary ions and molecular species. A focused beam of ultraviolet light at a specific wavelength is directed at the sample, reduction in the intensity of the light is then measured and converted to absorbance.
Specialty Toys Case Study 1. The mean is 20,000 units and there is a 95% probability that demand will be between 10, 000 and 30,000 units. This means there is a .025% chance that the demand will be outside of 10,000 and 30,000. Using the chart, we find that z=-1.96. Using the following calculation, we find: z= x- μ σ -1.96 = 10,000 – 20,000 σ σ=5102 Standard deviation σ = 5,102 μ = 20,000 mean 2.
Calculate the volume 3.00 moles of a gas will occupy at 24.0 °C and 101.3 kPa. 2. How many moles of gas would be present in a gas trapped within a 100.0 mL vessel at 25.0 °C at a pressure of 2.50 atmospheres? 3. If the number of moles of a gas are doubled at the same temperature and pressure, will the volume increase or decrease?
As a result, 92U235 changes to 92U236 and it will change to 141Br and 92Kr elements10. The NEW process: On putting the mass 235.1175 amu into the equation (8) at rest when π0 = π = 3.141592654 & (10) at excited state when π = πe = 3.152506608, we get the difference of mass in terms of energy 1.2159333 Mev. So, the equation of unification of physics is true. Determination of different energies of fission of uranium: Reference values: Mass of Uranium 92U235 = 235.1175 amu Loss of mass = 236.12648 – 235.91104 = 0.21544 amu Mass of neutron 1n0 = 1.00898 amu = 0.21544x931.49432 Mev = 200.6811363 Mev. Out of Total initial mass = 236.12648 amu this energy, 170 Mev is carried by the fission fragments Mass of Barium 56Ba141 = 140.9577 amu as kinetic energy, 5 Mev by fission of neutrons, 15 Mev Mass of Krypton 36Kr92 = 91.9264 amu by β and γ rays and 10 Mev by the neutrons
Objective : Does the temperature of the water increased or decreased as the dry ice is added every 30 seconds, until 300 seconds? What reaction will it be? (Endothermic or Exothermic Reaction) Hypothesis : The temperature of the water will decreased as the dry ice is added every 30 seconds. Also, the reaction will be endothermic reaction. Reaction : CO2+H2O → H2CO3 Technique : I will prepare a bowl that can fit 1000cc water.