LAB#1

Can you help me answer this questions 4 and 5, this is from the previous question I just split my question, thanks

A cubit is a measurement of distance from the ancient near east which is equivalent to about 1.5 feet. If a ziggurat (a cool pyramid...google it to learn more)covers an area of 1,612 cubits? what is its area in square meters? (3.28 feet = 1 meter) Note: When entering a number for questions like these significant figures are not considered. Instead, please answer to 5 decimal places. Your Answer: Answer units

CHE 100-Lab 1 - Measurement Background Reference: Openstax - Chemistry, Atoms First, 2e Section 1.4 - measurement units, derived units, density, water displacement method Section 1.5 - measurement uncertainty, number of digits Chemlibre - Basics of GOB Chemistry (Ball) Section 1.5-measurement uncertainty, number of digits Chem Libre - Chemistry for Allied Health (Soult) Section 1.2-measurement uncertainty, number of digits CHE100 Video Tutorials Measurement units, measurement uncertainty and "every digit is certain, except for the last one" rule. Materials Needed: Electronic balance, beakers (10,50,250 mL), graduated cylinder (100 mL), volumetric flask (50 cylinders. mL), water, household item that will sink in water and fit in one of the beakers or graduated Procedure: 1. Water density (different quantities of water) a. Determine the mass (grams) and volume (mL) of a sample of water using each type of glassware below. For the volume measurement, report the values with the correct…

Using the data below (included for context), what is the equation for the trendline for the data points that fall in the linear range  (linear range was found to be timepoints 1 min to 4 min,)? Your answer should be in the form of y = mx + b. Make sure that your trendline only includes the data points that fall in the linear range. In order to determine the trendline using Excel, you may need to create a new graph that only includes the earlier data points. With your new trendline, what is the initial velocity when 1 nM OXA-M290 is mixed with 60 μM nitrocefin? Make sure to include units in your answer. Context: DO NOT ANSWER Concentration of hydrolyzed nitrocefin at 20 time points. Graph attached below Time (min)  Concentration (μM)  0.5  6.01  1  11.78  1.5  17.6  2  23.51  2.5  29.58  3  35.31  3.5  39.73  4  44.5  4.5  48.18  5  50.05  5.5  52.72  6  54.01  6.5  55.06  7  55.65  7.5…

Leaming Goal: meanings and see that mili means 103. Therefore, To convert between metric units expressing length, area, and volume. 1 m %3D 1000 mm The ability to convert from one system of units to another is important in chemistry. It is often impractical to measure quantities in the standard meters, kilograms, and seconds, but the laws of science that you learn will involve constants that are defined in these units. Therefore, you may often have to convert your measured quantities into different metric units. The following table lists metric prefixes that come up frequently in chemistry. Learning these prefixes will help you in the various exercises. Once you know this, you need to divide one side by the other to obtain a ratio of m to mm: 1 m 1 1000 mm If you are converting from millimeters to meters, then this is the proper ratio. It has mm in the denominator, so that it will cancel the units of the quantity that you are converting. For instance, if you were converting 63 mm, then…

for the first box the options are 1, 2, 3, 4, 5  for the second box the options are 1, 2, 3, 4, 5  for the thrid box the options are 2, 3, 4, 5, 6, 7, 8, 9, 10

Here is the question I need help with: "Isopropyl alcohol has a density of 0.785 g/mL (d=0.785 g/mL). What volume of this solution is required to obtain 20.0g of the liquid (m=20.0g)? HINT: Use algebra to solve the equation below for the unknown variable. Be sure to use the correct amount of significant figures."   d=m/v

please help with all the parts in this question, it is practice so I want to have all the parts to study

Pls help me with the following. I don’t really get it why is it wrong. Make sure your answer is correct 100% and explain thanks

The first instrument we will use in lab is called a graduated cylinder. A graduated cylinder reads starting from zero at the bottom and goes up as liquid fills it. Keep in mind that you should always estimate one digit further than what is marked on the device to preserve your significant figures. For example, if the device has 1.0 mL increments, the measurement can be estimated to the second decimal place. For the graduated cylinder below, what would be the correct volume reading considering that the markings are in milliliters? Hint: What are the increments of measurement on the graduate cylinder below? -60 -50 -40 -30 -20

General Chemistry Laboratory I Lab 1 Significant Figures and Dimensional Analysis Student name PRE-LABORATORY QUESTIONS 1. How many significant figures are in each measurement? (1) 0.0044500 m (2) 5.003 km (4) 1.00 x 10³ s (5) 0.002 mm 2. Define accuracy and precision. 3. Convert 1.567 kilometers to centimeters.ccurate d 4. Convert 3.70 milligrams to kilograms. O Date: Page 1 IN-LABORATORY WORKSHEET 1. Give the number of significant figures in each of the following numbers. (1) 1,278.50 (2) 120,000 (4) 0.0053567 (5) 670 (7) 8.002 (8) 823.012 (10) 2.60 (Prepared by W. Song) (3) 10 dm (6) 10,000 m (3) 90,027.00 (6) 0.00730 (9) 0005789

Ball # Ball #1 Ball #2 Ball #3 Ball #4 Ball #5 Ball #6 Ball #7 Unknown Ball #1 Unknown Ball #2 Unknown Ball #3 Mass (g) 130.58 g 66.90 g 8.35 g 2.71 g 1.49 g 0.70 g 0.24 g 225.52 g 16.33 g 1.812 kg Diameter (cm) 3.15 cm 2.55 cm 1.27 cm 0.97 cm 0.72 cm 0.56 cm 0.40 cm Volume (cm³) 1. Calculate the volume of ball bearings 1 - 7 and record the result with excess significant figures in the table above. Show one example calculation below. Density (g/cm³) Correct Sig Figs! 4 3 π = 3.14159 V= 3 π r³

A jet airplane reaches 843. km /h on a certain flight. What distance does it cover in 15.0 min? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also , be sure your answer includes all the correct unit symbols.

Leaming Goal: To learn how to round an answer to the correct number of significant figures. Multiplication and division When multiplying or dividing, the final answer is rounded to the same number of significant figures as the measured number with the fewest significant figures. When we report a measurement in science, we are careful to report only digits known with certainty, plus a final digit that is recognized to be uncertain. We call this set of digits significant figures. Often, these numbers are used in calculations. When we use a calculator, the calculator does not automatically account for significant figures, so we have to do so ourselves. There are some basic rules for handling significant figures in calculations as shown in the table and outlined to the right. Addition and subtraction When adding or subtracting, the final answer is rounded to the same number of digits to the right of the decimal point as the measured number with the fewest digits to the right of the decimal…

Next, the chemist measures the volume of the unknown liquid as  1.023L  and the mass of the unknown liquid as  956.g .     Calculate the density of the liquid. Round your answer to  3  significant digits. g/cm3     Given the data above, is it possible to identify the liquid?   yes     no       If it is possible to identify the liquid, do so.   carbon tetrachloride     tetrahydrofuran     pentane     methyl acetate     diethylamine

It was still incorrect please solve it again.

between significant digits are always significant. figures. Example: 5,007 has 4 significant figures. 3) Trailing zeros in a number are significant only If the number contalns a decimal polnt. Example: 100.0 has 4 significant figures. 100 has 1 significant figure. 4) Zeros in the beginning of a number whose only function Is to place the decimal polnt are not significant. Example: 0.0025 has 2 significant figures. 5) Zeros following a decimal significant figure are significant. Example: 0.000470 has 3 significant figures. 0.47000 has 5 signlficant figures. Determine the number of significant figures in the following numbers. 1. 0.02 6. 5,000. 4. 2. 0.020 2. 7. 6,051.006 3. 501 3 8. 0.0005 1. 4. 501.0 9. 0.1020 5. 5,000 10. 10,001 5 Determine the location of the last significant place value by placing a bar over the digit. Example: 1.700) 9,010.0 4.7x10-8 10,8 00,000 3.0Tx 1021 0.00410 1. 8040 6. 90,100 0.0300 699.5 2,000X162 0.90100 2. 0.0300 7. 4.7 x 108 3. 699.5 8. 10,800,000. 3.…

need help with this chemistry

MATH HANDBOOK TRANSPARENCY WORKSHEET Operations with Scientific Notation Use with Appen dix B, Operations with Scientific Notation 1. Perform the following operations and express the answers in scientifie a. (1.2 × 105) + (5.35 × 106) 5.47 X105 b. (6.91 × 10-2) + (2.4 × 10-3) 7,15X10-2 c. (9.70 X 106) + (8.3 × 105) d. (3.67 X 102) – (1.6 × 10') e. (8.41 × 10–5) – (7.9 × 10-6) f. (1.33 × 105) – (4.9 × 104) 2. Perform the following operations and express the answers in scientific notation. a. (4.3 × 108) × (2.0 × 106) b. (6.0 × 10³) × (1.5 × 10-2) c. (1.5 x 10-2) × (8.0 × 10-1) 7.8 x 103 d. 1.2 X 104 8.1 X 10-2 e. 9.0 x 102 6.48 X 105 f. (2.4 X 104)(1.8 × 10-2) 94 Chemistry: Matter and Change Math Handbook Transparency Worksheets

please make sure the answer has the correct number of significant digits

Please answer question number 1 correctly with the correct answer. there is a picture of an example of a ''Dimensional analysis Format' below. please write out all work showing the math in dimensional analysis format.   Question 4: How many moles is 3.52 x 10^24 molecular water?

Please see image

Suppose you were measuring out an organic liquid, and some of it is evaporated after you have performed the volumetric measurement while you are weighing out the sample. What effect would this have on the densities you calculated? Will you overestimate or underestimate the density of the liquid? Would this cause poor accuracy, low precision, or both? Explain briefly.

A student needs to determine the density of an irregularly shaped object. This student prepares a solution mixture where the object is suspended. The collected data is shown in the table below. Liquid Continue Density g mL g mL 1.2600 0.799 Glycerol Isopropanol Determine the density of the object. Be sure your answer has the correct number of significant digits. POL Volume (mL) 80 F3 6.67 5.28 F4 X Ś F5 MacBook Air F6 F7 © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center DII F8 F9 Submit Ass F10

Need help answering all these questions

A jet airplane reaches 865. km / h on a certain flight . How long does it take to cover 459. m? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols