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Question 3 1 pts The molar mass of carbon dioxide is g/mol. Use the periodic table...
Question 1 1 pts When acetic acid and sodium bicarbonate react, why does the total mass decrease? the bubbling of the reaction mixture always causes spattering of the sodium bicarbonate which causes the overall mass to decrease. O a gas is released in the reaction so it's mass is not part of the reaction mixture after the reaction is complete some of the acetic acid gets consumed in the reaction which causes the overall mass to decrease the total mass...
5. 74.1% carbon, 8.6% hydrogen, & 17.3% nitrogen by mass. Its molar mass = 160 g/mol. 6. 59.0% carbon, 7.1% hydrogen, 26.2%oxygen, & 7.7% nitrogen by mass. Its molar mass = 180 g/mol. Find the molecular formula of a compound given: 7. 212.1 g sample with 42.4 g hydrogen and 169.7 g carbon. Molar mass = 30.0 g/mol 8. Carbon & Hydrogen containing compound sample with molar mass = 114.26 g/mol. 1 mole of the sample contains 18.17 g hydrogen....
If the molar mass of a substance is 44.01 g/mol, what is the mass of 1.05 x 1024 molecules of the substance? HTML Edita T. x : A 6.25 g sample of magnetite (Fe3O4) contains 4.52 g of Fe. What are the percentages of iron and oxygen in magnetite? HTML Editor Calculate the number of moles of NaHCO3(sodium bicarbonate, or baking soda) in a 5.0 g sample of this substance. A chemical reaction requires 3.50 moles of copper(II) nitrate, Cu(NO3)2....
A 21.8-L tank of carbon dioxide (CO22) is at a pressure of 9.28 atm and temperature of 19.4∘∘C. (a)Calculate the number of moles of gas in the tank. ______________ mol ( ± 0.02 mol) (b)Obtain the number of grams of carbon dioxide in the tank. Hint: You can obtain the molar mass of CO22 by adding the molar mass of C and twice the molar mass of O. The molar mass of an element is given on the periodic table...
QUESTION 4 What is the molar mass of nitroglycerin, C3H5(NO3)3? O 199 g/mol O 179 g/mol O 227 g/mol O 185 g/mol QUESTION 5 The number of moles in 37.80 g of C2H60 (molar mass = 46.1 g/mol) is 1.575 x 100 9.072 x 102 1.743 x 103 8.200 x 10-1 QUESTION 6 Determine the percentage composition (by mass) of oxygen in H2SO4. 65.25 %
Question 15 2 pts A pharmaceutical compound is consisted solely of carbon, hydrogen, and oxygen. When 1.00 of this compound is burned in air, 2.20 g of carbon dioxide and 0.400 g of water are collected. The molar mass of this compound is between 160 and 190 g/mol. The molecular formula is: B) CBH100 D) C10H603 Question 15 2 pts A pharmaceutical compound is consisted solely of carbon, hydrogen, and oxygen. When 1.00 of this compound is burned in air,...
3. Use the following table of data to calculate the molar mass of naturally occurring carbon: Isotope 12C Isotopic Molar Mass (g mol'') 12.00000 13.00336 Abundance (%) 98.93 13C 1.07
CHW 18 Question 3 Constants Part A Diatomic carbon dioxide gas (CO, has molar mass of 44 0 g/mol ) is at a temperature of 319 K Calculate the most probable speed op m/s p425.24 Submit incorrect; Try Again; 9 attempts remaining vav 392 m/s Constants Previous Answers atomic carbon dioxide gas (CO2 has molar mass 44.0 g/mol) is at a temperature of 319 K V Correct Part C Calculate the root-mean-square speed vrms m/s thms = 347.21 Submit Previous...
A sample of carbon dioxide (37.11K-1 mol) of mass 3.75 g at 27C is allowed to expand reversibly and adiabatically rom Phm to 2.70 dm3. What is the work done by the gas? cm to
HELP AS SOON AS POSSIBLE Use the periodic table of fake elements in the first photo to answer the following questions. Anyone willing to help will receive a very very good review! Your help is greatly appreciated. Periodic Table of 'Fake' Elements This periodic table will be used for online quizzes and exams and will be provided with questions when it is need to answer a question. Your instructor will use the element symbols and their average atomic masses to...