Copy of Lab Report Week 1

4. When you get your 5th correct answer, you will get a certificate that you can share with your teacher letting your teacher know how you did. Please provide a screenshot of your certificate showing you got this completed. DATA Part B: Measuring the Mass of Materials Top Loading Balance Mass Empty Beaker (g) Mass of Beaker + Paper Clips (g) Mass of Paper Clips (g) Analytical Balance Mass of Empty Beaker (g) Mass of Beaker + Paper Clips (g) Mass of Paper Clips (g) DATA ANALYSIS: 1. Show your calculation for the mass of paper clips using the top-loading and analytical balances. 2. Which of the balances, top-loading or analytical, has the most uncertainty per measurement? Explain. Page 10 of 14

A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. 2 2 (0.030 ²). = ? Pa·m² Pa mm

A researcher has developed a new analytical method to determine the percent by mass iron in solids. To test the new method, the researcher purchases a standard reference material sample that is 2.85% iron by mass. Analysis of the iron standard with the new method returns values of 2.75%, 2.89%, 2.77%, 2.81%, and 2.87%. Does the new method produce a result that is significantly different from the standard value at the 95% confidence level?

A student sets up the following equation to solve a problem in solution stoichiometry. (The ? stands for a number the student is going to calculate.) Enter the units of the student's answer. mL kg = (0.42 1) ( 15 ) (1.4 +2+) (11.) - L) 品)( 3 -3 10 g 10 L x10 X H 00 S

11 of 11 I Review | Constants Periodic Table Suppose that you want to find the equation for a line that passes through the two points (0,3) and (4, 9). What is the slope of this line? Express your answer numerically. > View Available Hint(s) Πνα ΑΣΦ ? m = Submit rt C Complete previous part(s) 9:41 PM 36%

please use dimensional analysis with the numbers given

E· > NEXT A BOOKMARK 88 Question 5/30 Balance the following chemical equation by placing coefficients in front of the formulas. • The number "1" must be used in an empty space. • Make sure you answer every box. Study of Matter -- Chemical Reactions KNO3 → KNO2 + O2 ASUS f8 19 f6 f7 f3 f4 f5 fT f2 esc & %24 8. 4 5

O MEASUREMENT Adding or subtracting and multiplying or dividing measurements A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 1.5 g • She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed 36.669 g. • She added water to the graduated cylinder and dissolved the sodium hydroxide completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was 37.11 mL. What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits. g mL Explanation -1 Check 99+ 0/5 VUDU © 2023 McGraw Hill LLC. All Rights…

Dimensional Analysis is a way of doing numerical "book-keeping" when converting quantities or performing calculations. • When converting quantities from one unit to another, conversion factors are used. Solving with Dimensional Analysis and Multiple Units: If I am in Canada where the price of gas is $1.022 USD·L1, how much will it cost me to fill up my gas tank if I travelled 125 km? • Let's also assume that my car gets an average of 30.0 miles/gallon.

In an oxidation-reduction reaction, a piece of copper wire was put into silver nitrate solution.  After the reaction, the final mass of the copper wire with silver was measured.  The silver was then taken off and the final mass of just the copper wire was also measured.  Which mass, the mass of copper lost or the mass of silver produced, would you consider more accurate and why?

please answer this is dimensional analysis as the problem requires

Use the algebraic equation to determine the mass if the volume was 622 mL.  mass (g) = (3.60 g/mL)(volume (mL)) + 11.4 g y= mass (g) m = 3.60 g/mLx= 622 mL b = 11.4 g

When 0.501 g of sucrose (table sugar, white microcrystalline solid) is dissolved in water (clear colorless liquid) to create a solution in a 10 mL volumetric flask, a clear colorless solution is created. What in statement above is quantitative data? [ Select] qualitative data? [Select ]

a) An acetaminophen suspension for infants contains 80 mg/ 0.80 mL suspension. The recommended dosage is 15 mg/kg body weight. How many mL of this suspension should be given to an infant weighing 6.5 kg? b) A runner wants to run 10.0 km. She knows that her running pace is 3.5 m s- 1. How many minutes must she run?

How many grams of steam and iron must react to produce 375 g of magnetic iron oxide, Fe3O4? 3 Fe (s) + 4 H2O (g) →Δ Fe3O4 (s) + 4 H2 (g) Enter your answer in grams for water into the first answer field in accordance with the question statement. g H2OEnter your answer in grams for iron into the second answer field in accordance with the question statement. g Fe

Table 6. 4 (data)         NaOH NaCI NaNO 3 Cu(NO 3)2       AgNO 3       Fe(NO3)3

or dividing measurements A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 5.250 g • She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed 75.41 g. • She added water to the graduated cylinder and dissolved the sodium hydroxide completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was 37.4 mL. What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits. -1 Explanation Check 2021 McGraw-Hill Education All Rights Reserved Terms of Use Privacy Accessibility Thank The # $ % & 2 3

The data table is from a lab in which an effervescent tablet is added to a test tube of water.  This produced a solution that fizzes and releases gas bubbles that escape into the air.The total mass of the substances and the test tube were recorded before and after the tablet was added to the test tube of water.  If matter is always conserved, how do you explain these results?

A volume of 25.00 mL of the original solution was diluted to a total volume of 100.0 mL and then 10.00 mL of that diluted solution was diluted to a total volume of 15.00 mL to make the sample for analysis.  If a student in lab found that the solution for spectroscopic analysis had a concentration of (4.0x10^-5) M, what was the concentration of the original solution, in units of M?

Please put the right amount of significant figures

can you please answer the question in the format that it is asking below the question with the provided equations and numbers. thank you

A student sets up and solves the following equation to solve a problem in solution stoichiometry.Fill in the missing part of the student's equation.