152 practice final

A human hair is 75 um across. How many inches is this? STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) %D 0.01 100 10 1 1x 10° 1 x 10-6 0.1 2.54 1 x 106 0.33 0.001 0.003 3.0 1 x 10-9 75 1000 0.00003 in mm cm um 30

Please answer both questions.

A pure substance that is composed of only one type of atom is______.   Group of answer choices a particulate a homogeneous mixture a heterogeneous mixture an element a macroscopic particle

The density of mercury is 13.6 g/cm3. The density of mercury is ________ kg/m3. Group of answer choices

After analyzing soil samples, we found 70 mg arsenic in 120 kg soil. Concentration of arsenic in the soil = ________ ppmm

Question 20

Significant figures are important because they indicate ________.    the number of digits in a measurement   the number of measurements   a counted number   the accuracy of the conversion factor

The Bay of Fundy in Nova Scotia, Canada is reported to have the largest tides in the world with high tide and low tide occurring two times per day. The tides can measure ft in height. At the Hopewell Rocks at Hopewell Cape, over approximately 50.0 on a specific day height increase was recorded as a rate of 6.08 feet per hour. What is the rate in meters per second ? ARTING AMOUNT ADD FACTOR DELETE ANSWER RESET *( ) %3D 60 5.15 x 104 1 0.332 7 50.0 111 1.20 x 103 0.3048 12 6.08 0.0309 ft ft/h h min day m/s S

Question 19

Pmease assist with number 1.   this is NOT a graded question.  See below: This is not a graded question as it is a practice question . I am 60 years old and helping my son prepare for the AP exam in a few months. We do questions at the back of the textbook by Zumdahl and Zumdahl

Chemistry

Data Table 1. Mass of Pipetted Samples of Water (The first one is done for you. Sample Density (g/mL) mL Sample Mass (g) 1.00 0.99 g D = mass/volume = 0.99 g/1.00 mL = 0.99 g/mL 3.00 2.98 g /3.00 mL = 2.98 g 4.00 3.99 g /4.00 mL = 3.99 g 5.00 5.01 g 5.01 g /5.00 mL = 9.89 g 9.89 g/ 10.00 mL = 10.00

Chapter 1 hw

The ionic radius of a sodium ion is 2.27 angstroms (A). What is this length in um 1010 2.27 X 2.27 x 10 pm STARTING AMOUNT 1 101° m 2.27 Å x = 2.27 × 10* µm 1A ADD FACTOR DELETE ANSWER RESET *( ) 2.27 0.0227 10° 2.27 x 1010 1 106 1010 1010 104 104 10 10 2.27 x 104 2.27 x 10* um A cm

Dipping into health When blood pressure is measured over a 24-hour period, this is referred to as ambulatory blood pressure monitoring, three patterns arise. Here are samples of three different individual. Let's call them Dick (1), Tom (2) and Harry (3). 1 2 3 Patient's Paticnt's BP BP Palicet's Upper limit Upper limit 12 Upper lim 124 120 Lower limit Lower Lower limit Time (houn after wakening) Time (hours after awakening) Time (hours after awakenin SYSTOLIC BP (mm Hg)

F2 © Macmillan Learning NO₂ Incorrect # 3 20 F3 : 0: || $ 4 F4 078⁰ % 5 BeCL MacBook Air < 60 & 7

Im just on 6th grade pls answer the question simple. Thank u so much hope u could help me thank you ❤❤❤❤

Please help me complete question 1,2,and 3

Give correct handwritten answer

After analyzing soil samples, we found 70 mg arsenic in 120 kg soil. Concentration of arsenic in the soil = ________ µg/kg

For number 19, I feel I am not doing it correctly. What is the steps and answer to number 19?

Each capsule contains 850 mg of the drug. The number of capsules needed to provide 50 mg/kg/day for 10 days for a person weighing 149 lbs is ___ capsules

Classify each property as intensive or extensive. Intensive Extensive Answer Bank temperature color volume boiling point hardness density mass length

Please fill in the boxes

1) 0.345 g-0.27 g = [Select] 2) 8.159 g/0.95 mL = [Select] 8 g/mL

None

Convert 6.25 × 104 Pa to mm Hg.  A) 625 mm Hg B) 0.617 mm Hg C) 82.2 mm Hg D) 469 mm Hg E) 4.75 × 107 mm Hg

Subparts 1-3

_Li:SOs >_B2(SO3)3 +_LiF 3)_BF3 + 4.677 kilograms of BF3 makes how many grams of LiF? _B2(SOs)3 +.

For each of the following equilibria, write the equilibrium constant expression for Ke Y Part A 2N₂Os (9) 4NO₂(g) + O₂(g) O Ke = O K₂= O K. OK- Submit Part B [NO₂[0₂] N₂O₁ Ke = [NO₂¹0₂] N₂0₂ N₂O₁] NO₂0₁ N₂O, NO₂] O₂ Request Answer 3F2(g) + Cl₂ (9) 2CIFs (9) (CIF₂ CI, P ICE, P Pearson

1 please assist with number one in the picture.  I want to be we are correct. This is not a graded question as it is a practice question . I am 60 years old and helping my son prepare for the AP exam in a few months. We do questions at the back of the textbook by Zumdahl and Zumdahl

Part C Say you glued two samples together; a 5.00 g sample of acrylic with a density of 1.19 g/mL and a 2.35 g sample of Teflon (d = 2.22 g/mL). What is the density of the combined sample? Be careful here and remember the difference between intensive and extensive properties. • View Available Hint(s) ? 1.29 g/mL