2. Use the information on the image below to find the following:h=5 cmNotesDensityarworkw=6 cmASHI1=8 cmMASS of the object is given as 80 Ga. Volume of the object -(Hint: V = Lx W x H)b. Density of the object is(Hint: Density-Mass / Volume)c. Given that density of water is 1 g/ml, use your response to question 'b' aboveto infer if the object would sink or float on water. Explain using appropriatescience concept.

Given object is a cuboid which has six faces .A cuboid is a three dimensional shape which has 8…

Answered: 2. Use the information on the image…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Consider a buffer solution that contains 0.55 M NH2CH2CO2H and 0.35 M NH2CH2CO2Na. pKa(NH2CH2CO2H)=9.88. a. Calculate its pH. b. Calculate the change in pH if 0.155 g of solid NaOH is added to 250 mL of this solution. c. If the acceptable buffer range of the solution is ±0.10 pH units, calculate how many moles of H3O+ can be neutralized by 250 mL of the initial buffer.
7. Compare the paired concentrations below (given in terms of Molarity (moles/liter), where mM is millimolar and μM is micromolar) and determine which of the values have the higher concentration. a. 0.005M vs. 5,000 mM b. 300mM vs. 3000 μM c. 1M vs. 100,000 μM
1. What is the molality of the following solutions? a. 171.9 g of Sr(NO3)2 is dissolved in 1.44 kg of water. b. 0.883 g of K3PO4 is dissolved in 40.0 g of water. 0.250M=0.250mcl kF IL scl i80.anilio (6250 mcl 0.500M=0.500md wO IL Som
2. A. If 100 mls of 0.03 M HCI is added to 400 mls of 0.5 M glycine buffer at pH 10.4, what is the resultant pH? (pK1 for Gly= 2.2, Pk2=9.4) Gly.4L X.5mol/L= .2 mol HCI.1LX.03mol/L = .003mol Glyº .02mol +.003 mol .023mol [HA] = .023/.5L =.046M, [A-] =.177/.5L = .354M pH = pka +log [A-]/[HA] pH = 9.4 +log.354/.046 = 10.3 [HCI] = [H+] = .003mol/.5L = .006M pH =2.2 Gly + H+ .18mol -.003mol .177mol end start B. What would the pH be if the same amount of HCl as in part A was added to 400 mls of water?
Construct a standard curve (absorbance versus protein concentration in the standards) Conc. (mg/ml) 0 0.25 0.5 0.75 1.0 Absorbance 0.000 0.126 0.249 0.361 0.464
The solubilities of three salts in water are shown in the graph. 1000 - Pb(NO,). 900 3/2 For each salt, determine how much will remain undissolved if 800 K,Cr.O, 500 g is mixed into a liter of pure water at 40 °C. One 700 - significant figure is sufficient in each answer. 600 500 KCI 400 Pb(NO,), 300 200 100 KCI: 10 20 30 40 50 60 70 80 90 100 Temperature (°C) K,Cr,0;: g Solubility (g/L)
1. compute for patient B result of his chloride analysis with the following data using mg/dL unit factor: 355/ mg/dL , Absorbance sample = 0.2148, Absorbance standard = 0.3017 a. 24.8 mg/L b. 25.27 mg/dL c. 2.7119 mmol/L d. 252.7 mg/dL 2. an adult patient suffering from debilitation is supected of calcium deficiency. His doctor requested for calcium anaylusis with the following data gathered standard known value is B: Absorabance is 0.2876. sample absorbance is 0.4291 compute for the calcium in mmol/L a. 53.6mmol/L b. 5.36 mmol/L c. 11.9 mmol/L d. 119mmol/L 3. calculate the value of sodium where the PREC solution has diclored. data gathered are the following: Absorbance of Reagent Blank = 0.3124 Absorbance of sample = 0.114, Absorbance of standard = 0.275 value is 150mmol/L a. 108.2 mmol/L b. 170.4 mmol/L c. 795.72 mmol/L d. 79.5 mmol/L
( Please type answer note write by hend )
Make a conclusion: pH = 7,15 PCO2 = 25 mmol/ %3D SB = 11 mmolN ВB %3D27 ттol Л BE = -17 mmol/l
te Table 1: Mass (g) of bags A, B, and Cover time (min). 15% 30% Mass of A (g) Mass of B (g) Time (min) 0 15 30 45 60 12.4 10.4 9.1 7.7 ebookda 6.2 11.6 11.2 10.9 10.4 10 Mass of C (g) 12.1 12.9 13.8 14.7 65% 15.9 1. What is the tonicity of the unknown solution compared to bag A, bag B, and bag C, respectively? Answer this question by completing the sentences below. Compared to bag A, the unknown solution is hyper-tonic, because the mass of the bag decrease out (increased or decreased) indicating that water flowed (describe the direction of osmosis). akom bag decrease (increased or decreased) out not Compared to bag B, the unknown solution is so -tonic, because the mass of the indicating that water flowed oud (describe the direction of osmosis). Compared to bag C, the unknown solution is hype-tonic, because the mass of the bag increased (increased or decreased) indicating that water flowed into the cell (describe the direction of osmosis). 2. The pattern of change in mass was similar…
9. Find the final concentration as a percent (w/v) of dextrose when 75 mL dextrose 50 % (w/v), 50 mL of sodium chloride 0.9 % (w/v), and 100 mL of dextrose 5 % (w/v) sodium chloride 0.45 % (w/v) solution are mixed together.
5. Note: These directions will help you collect data that will answer questions about different concentrations of a single chemical. If you have a different question, you will need to modify your data table, the data collected, and graph. 1. Identify at least 4 different concentrations of the chemical for which you wish to collect data. Type the name of your chemical at the top of the first column and record the concentrations in your data table. 2. For each concentration you will collect heart rate data for three different daphnia. a. Select a daphnia trial you wish to observe. b. Select a video speed at which you wish to count the heart beats of the daphnia. c. Count the heart beats in your selected video. d. Remember all of the videos show 15 seconds. Multiply your 15 second count by 4 to then have beats per minute for the units of heart rate. Record your heart rate calculation (bpm) in the table. e. The table is set-up to automatically calculate the average heart rate for…

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