lab 14

Part A: For calculations involving gaseous systems, it is important to use the kelvin temperature scale. What is the temperature in kelvin if a thermometer reads 221 °C? Part B: If we are given the temperature in Kelvin, we may need to turn this back into Celsius (most thermometers use the Celsius scale). A gas has a temperature of 286 K. What is this temperature in Celsius?

Measurement and Matter Adding or subtracting and multiplying or dividing measurements 0/3 Bishop V A chemical engineer must report the average volume of a certain pollutant produced by the plants under her supervision. Here are the data she has been given by each plant: volume of plant pollutant 49.02 L Oglala Platte Susquehanna 3.35 L 46.84 L What average volume should the chemical engineer report? Be sure your answer has the correct number of significant digits. OL X G ? o0o

This experiment works on the principle that the gas will displace water as the gas is bubbled into the full bottle of water, The starting volume of waater is 350 mal CAPE has been bubbled into the bottle, it is found that the volume of water left is 124.0. Determine the volume of the gas in mL. Write a numeric answer A Moving to another question will save this response. « > 8:38 AM cch a 属 22 4/13/2022 insert prt sc 10 2$ 4 %23 backspace 3. 8 R T Y U 1O [ K D pause alt ctri B

7. ( A student performs the Avogadro's portion of the experiment and obtains the following graph. Using this information, if the syringe has a volume of 50.0 mL, how much NaHCO3 (in grams) should the student add to completely fill the syringe with CO₂ gas? I Volume (mL) Avogadro's Law Plot 30.0 22.5 R¹ 0.9914 15.0 7.5 0.0 y= 26417x-4.3768 0.0E+00 3.0E-04 6.0E-04 9.0E-04 1.2E-03 moles of CO2 Law

Students react zinc with hydrochloric acid to produce zinc chloride and hydrogen gas in a test tube. They weighed the reactants, the flask, and the balloon that captured the hydrogen gas. The zinc was added to the acid and the balloon attached across the mouth of the flask. The table shows the data each group collected. Zinc Zinc & Chloride Hydrochloric & |Group acid Hydrogen gas 155.67 g 155.65 g 2 157.80 g 157.78 g 3 148.22 g 146.54 g 4 155.93 g 155.92 g 169.42 g 169.43 g Explain how the data supports the Law of Conservation of Mass is followed.

How much (mL) silver nitrate is required for the standardization? 4.995 49.950 49.590 45.990

Can you help me with number 6? Was this the correct answer that shows my work includes the significant figures? Also, can you help me with Gay-Lussac's Law formula to plug in?

3. While determining the volume during this experiment (Part II), if the total volume of the flask were incorrectly reported as 125 mL, how would this error affect the calculated molar mass of the unknown volatile liquid? Explain. MacBook Air 80 DII F3 F4 F5 F6 F7 F8 F9 F10 & * 4 5 6 7 8 R Y * 00

If a car is traveling at 43.0 miles per hour, contains 3 gallons of gas, and gets 22.5 miles per gallon, can it travel to a station 114.9 km away? If so how many hours will it take? How much gas (if any) is left upon arrival? If not, how far will it go before it runs out of gas? How much more gas would it need to reach the destination?

Please answer 1-3. Tysm❤️

A chemist adds 40.0 mL of a 0.083 mmol/L sodium thiosulfate (Na, S,O, solution to a reaction flask. Calculate the mass in milligrams of sodium thiosulfate the chemist has added to the flask. Round your answer to 2 significant digits. I mg Submit Assignment Continue O 2021 McGraw Hill LLC. A Rights Reserved. Terms of Use Privacy Center Accessibility

4.35 L He/1 x 1 mole He/22.4 L He=0.19 moles He.  Explain why the final answer of 0.19 moles  makes more sense than 0.91 moles using the example answer attached to help.

Complete the chart using the following information, show your setup for calculations of line 9-11. For volume of oxygen collected, you will reference the cylinders.

A chemist adds 1.15 L of a 0.164M potassium permanganate (KMnO, solution to a reaction flask. Calculate the mass in grams of potassium permanganate the chemist has added to the flask. Round your answer to 3 significant digits. x10 Submit Assigr Continue MacBook Air FI

I need help with 11 and 12 (Not honor class) (Not grading)

DATA: Mass of potassium nitrate mass of test tube and potassium nitrate mass of test tube mass of potassium nitrate Volume of water taken Buret readings: Final gaml Initial Volume 4.97 added Temperature at which crystals appear Total volume of water in tube ML 1st addition 2nd addition 7.09ml 12.1ml 2.12 mal 7.09 ml 12.1ml 53.85839 43.9740g 9.9131 water. Record all data in the 4.97 9.98 15.78 4.97 9.98 3rd addition 17.9 ml 21.1ml 78.8 Temperature of water when volume is measured Density of water at when volume is measured (from reference) 0.970 Trial | || 52.0 39.1 21.4°C 15,18 4th addition 18.98 17.9ml ||| 28.2 18.98 IV 2

Draw 6 water molecules in each beaker below.  On the left should be 6 liquid water molecules. On the right draw the gas particles that are present after evaporation, but before any substances escape the beaker.

A chemist prepares a solution of iron(II) bromide (FeBr₂) by measuring out 491. g of iron(II) bromide into a 500. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's iron (II) bromide solution. Be sure your answer has the correct number of significant digits. ? mol/L x10 X Ś 00. 18 Ar

A 區 88%1 G € T 9 Q1. An organic chemist isolates a colourless liquid from a petroleum sample. She places the liquid in a flask and puts the flask in a boiling water bath, which vaporizes the liquid and fills the flask with gas. She closes the flask, reweighs it, and obtains the following data: Volume of flask (V) = 213 mL Mass of flask+gas = 78.416 g T=100°C P=754 torr (760 torr in 1 atmosphere) Mass of empty flask = 77.834 g Calculate the molar mass of the liquid, carefully converting to appropriate units, where necessary. (Note: Gas constant; R = 0.082057 L.atm.K'.mol¹) 80 5:38 Wed, 29 May E III III B I U 0 о 29 A+ T + 12▾ E▾ W 閃 == 191 < 0 <

Chemistry please check and answer questions 2-3!

Can you help me with number 4? Was this the correct answer that shows my work includes the significant figures? Also, can you help me with Boyle's Law formula to plug in?

Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaOH) to produce aqueous sodium bromide (NaBr) and liquid water (H₂O). Suppose 61. g of hydrobromic acid is mixed with 59.1 g of sodium hydroxide. Calculate the minimum mass of hydrobromic acid that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits. ON d X

The distance from Santa Cruz to Santa Barbara is about 280 miles.  If a car gets 23.6 miles per gallon, and the price of gas is $0.32 per liter, how much will it cost for the gasoline needed to drive from Santa Cruz to Santa Barbara? Report your answer in dollars. Assume that 1 gallon is equivalent to 3.785 L.  Answer isn't  1,022.7 1,436.48 1,436.5

se 10.81 12.011 14.007 15.999 18.998 20.180 1 H 2 Не 1.008 4.003 3 4 5 19 8 CN OF 10.81 12.011 14.007 15.999 18.998 20.180 15 6 7 10 Ne Li Ве В 6.94 9.012 11 17 18 12 Na Mg 22.990 24.305 13 16 Al Si P S 26.982 28.085 30.974 32.06 | 35.45 39.948 14 CI Ar Rank the following according to DECREASING number of S atoms: A. 31.0 g S8 B. 50.0 mL CS2 (density = 1.26 g/mL) C. 1.32 mol SF6 D. 4.67 x 1024 C5H¼N4S molecules

A chemist adds 0.50 L of a 1.2 mol/L aluminum chloride (AICI,) solution to a reaction flask. Calculate the mass in grams of aluminum chloride the chemist has added to the flask. Round your answer to 2 significant digits. g x10 Continue Submit Assignment O 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility esc 30 888 DI DD F2 F3 F4 F5 F6 F7 FB F9 F10 F11 F12 @ $ & ) 1 2 4 5 7 delete Q W E R Y U | { } tab P [ * CO %#3

Which statement is false? The volume of a balloon decreases when placed in a freezer. 1 cm³ = 1 mL Increasing temperature increases the speed of the particles according to the KMT. Pressure is defined as the force of the gaseous particles against the walls of the container. The temperature of a gas increases as you compress the canister.

A sample of oxygen gas initially at 315 K was heated to 369 K. If the volume of the oxygen gas sample at 369 K is 861.3 mL, what was its volume at 315 K? V = mL