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?

Please answer question 1 & 2 in your own words: Question 1: Density has obvious importance when it comes to the buoyancy of objects. What is buoyancy and how does it relate to Chemistry? And Everyday life? Is Density a Law? Question 2.

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

10.  A gas in a container with a volume of 328 mL contains 0.72 moles of gas. Gas is removed from the container so that it now contains 0.26 mole of gas. What is the new volume in milliliters? Do not type units with your answer.

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❤️

Please answer all the parts of the following question

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.

11. For the chemical reaction 2C4H10(g) +1302(g) → 8CO₂(g) + 10H₂O(l) assume that 13.4 g of C4H10 reacts completely to products. The density of CO₂ is 1.96 g/L. What volume in liters of CO₂ is produced?

a) 526 mL of oxygen gas at a temperature of 107 degrees Celsius contracts to 460 mL upon cooling. What is the new temperature in degrees Celsius? Use 273 for the conversion of Celsius to Kelvin. Do not type units in your answer. If the final answer is negative be sure to include the negative sign b) A gas in a container with a volume of 299 mL contains 0.80 moles of gas. Gas is removed from the container so that it now contains 0.29 mole of gas. What is the new volume in milliliters? c)A gas in a container with a volume of 171 mL contains 0.67 moles of gas. Gas is removed from the container so that it now contains 0.32 mole of gas. What is the new volume in milliliters?

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

Mass Volume Volume (g) (mL) A (mL) B .14 .31 1.5 21 .35 .27 .36 .41 .51 4. .55 .62 .68 .79 1. 2 3.

This is not graded! It is strictly for practice. Do questions 1-5.

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.

Please help me answer number 1. 1. If your graphs revealed a mathematical relationship between specific heat and atomic mass, write down an equation for the relationship. I also don't understand, is the equation from the line regression the one that I'm suppose use to show the relationship? If so could you work it all the way out?

Can you help me with questions 4, 5, 6, and 7 please?

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

Help me solve this questions 1, 2 and 3.

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 <

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?

What I Can Do 1. Graph the given values and describe the relationship of the two variables. Volume (L) Temperature °C Temperature (K) °C +273 = K 8.7 100 8.4 90 8.1 7.9 7.7 7.4 7.2 2. Plot the values in a graphing paper. 3. What does the relationship of the two variables mean? 88