Ch11 Quiz: Real Estate 84 Sec ON1 (20349) Fall 2023

Part A: Basic Laboratory Operations Density of a Solid TRIAL 1 TRIAL 2 Mass of solid (g) 19.761 g 19.763 g Volume of water (cm³) 75.0 cm^3 75.0 cm^3 Volume of water and solid (cm³) 78.0 cm^3 78.0 cm ^3 Volume of solid (cm³) 3.0 cm^3 3.0 cm^3 Density of solid (g/cm³) 7.0 g / cm^3 7.0 g / cm^3 Average density of solid (g/cm³) 7.0 g / cm^3 Identity of solid Zinc metal [Density = 7.133 g/cm^3] 1. Density of Zinc: Consider the data and results from the density of zinc determination. Now focus on the average absolute error associated with the calculated average density of zinc. Which measurement contributes the most relative error to this value? Given that measurement and its associated absolute error, is the calculated average absolute error reasonable and why? What aspect of the experiment limited the measurements the most?

Rapidly cool to 625°C (1155°F), hold at this temperature for 10 s, rapidly cool to 400°C (750°F), hold at this temperature for 5 s, then quench to room temperature. martensite % proeutectoid ferrite bainite fine pearlite austenite i eTextbook and Media

You are interested to know the Q10 value for mean heart rate (# of beats/10 sec) for a species of crab for the temperature interval of 25°C - 35°C. To find this value, you collect data for these six temperatures and calculate mean heart rate (# of beats/10 sec) for each temperature. Here is the data: 10°C 15°C 20°C 25°C 30°C 35°C Mean Heart Rate (# 23.67 23.89 24.33 27 35.89 37.78 beats/10 sec) What is the Q1o value for heart rate (# of beats/10 seconds) for the temperature interval of 25°C - 35°C? Round your answer to two decimal places.

3500 nm isn't an option.

question 2 and 3 with detail and reasons for each question

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if you could please help! i submitted this previously and was told that it looks incomplete. the questions are complete and there is no additional information to upload with the questions. again there are 6 questions and i have done a majority of them. i really just need help with question 2 and 3, however, if you could look at my answers for the questions i did and tell me if they are correct i will gladly rate you! thank you so much. I apologize if it is small, i made the font smaller to fit everything on one picture

2 W S Type your answer to the following: Consider the steps the student took in the following scenario. Then describe anything the student did wrong and how it would have affected the student results (too high, low, or unchanged) and why. X A student forgot to weigh the filter paper prior to filtering the salt from the sand. To make up for this, the student weighed a different filter paper from the box and used that mass in the calculations. Edit View Insert Format Tools Table 12pt Paragraph # 3 80 F3 E D $ 4 C 888 R LL F BI U % 5 V F5 T G MacBook Air 6 F6 Y B T² & 7 H F7 A U N * 00 8 J 1 ( 9 M K O F10 L X P

Arrange the values according to magnitude. Greatest     Least Answer Bank 7.1×10−6 3.3×10−2 52000 9.0×10−6 2.2×105

Student Discipline Problems The data for a random sample of 32 months for the number of discipline problems that occurred each month at a large high school are shown. Find the 99% confidence interval for the mean when σ 3. Round your answers to one decimal place. = 13 19 10 11 14 25 16 27 22 29 23 29 28 17 17 22 28 26 29 20 22 18 14 215 16 27 17 14 17 110 11 20 19 22 Send data to Excel We are 99% confident that the mean is between 15.1 and 17.8 discipline problems per month.

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

Plz answer correctly in 20 minutes plz it's very urgent

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Trial [I0:] [HSO: ] Time Rate [HSO3 ]/time 1 49 25 3 16.9 Table-2 Find the concentrations of [IO3] and [HSO3] and enter into the table. Divide the concentration of HSO3 with the time in seconds to get the rate. Volume is assumed to be additive in this experiment. Thus, the total volume of all the solutins is assumed to be 20.0 mL. This introduces a small error that can be considered insignicant. The concentrations of IO; and HSO, (after mixing but before the reaction begins) can be calculated using the relationship: Mailute Vdilute= Mcone Vcone. A sample calculation is shown below for the concentration of IO, in Trial 1: Mailute to be calculated Vdilue 20.0 mL 0.020 M x 2.0 mL Mcone 0.020M V conc 2.0 mL %3D diluted [IO, ] = = 0.0020 M IO, %3D 20.0 mL Similarly, the concentration of HSO; in Trial 1 is calculated thus: 0.010 M x 2.0 mL diluted [HSO, ] =0.0010 M HSO, 20.0 mL

Aktiv Chemistry < X + app.101edu.co Type here to search Your Aktiv Learning trial expires on 08/29/22 at 07:08 PM A chemist has a block of iron metal (density is 7.87 g/mL). The block weighs 2.10 g. What is the volume of the iron block in mL? O S Question 37 of 73

Ba(NO,l(aq) + K,SOlaq) Baso(s) + 2 KNOlaq) Volume Volume Trial 0.10 M Ba(NO)2 (ml) 0.10 M K,SO, (ml) Mass Baso4 (s) Limiting Reagent 50. 20. 0.46 50. 40. 0.92 3 50. 50. 1.15 4 50. 60. 1.15 50. 80. 1.15 • Question 8 Use the data to identify the limiting reagent for each reaction performed. V Trail 1 a. Neither/Both EV Trial 2 b. Baso4 EV Trial 3 C. KSO4 EV Trial 4 d. Ba(NO3)2 EV Trial 5 e. KNO3 Question Help: Message instructor I Calculator Submit Question • Question 9 Why is the amount of precipitate in the Data Table above the same in Trials 3 through 5? Edit Insert Formats B IVX x' A

Question 21

Based on a grade 11 chemistry student, answer the following question based on the provided tables: Use the information provided in table 3 to estimate toxic dose (in number of pills) for Mary based on her weight of 50 kg. You must show your work using dimensional analysis