ENPE_381_Set-1-2010-Solution

Question 13 of 30 Submit A 7.591-g gaseous mixture contains methane (CH4) and butane (C,H10). Complete combustion to form carbon dioxide and water requires 0.9110 mole of oxygen gas. Calculate the mass percent of methane in the original mixture. % 1 4 6. C 7 +/- x 10 0 Tap here or pull up for additional resources 3. LO 00

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25.00 g of a pure hydrocarbon undergoes complete combustion in excess oxygen to generate 74.86 g CO₂lel and an unspecified mass of water vapor. Determine the empirical formula of this hydrocarbon. CH3 C₂H3 C3H4 C₂H5 C3H8

1.    Water is formed by burning H2 (g) in the presence of O2 (g):    2H2 (g) + O2 (g) à 2H2O (g) a)    If you have 32 g of H2­ gas and 32 g of O2­ gas, which do you have the most of in terms of moles? Explain your reasoning.   b)    Starting from the 32 g of H2, how many moles of water can form from the H2­ gas?     c)    Starting from the 32 g of O2, how many moles of water can form from the O2­ gas?   d)    Based on the amounts of water formed in parts b) and c), which is the limiting reactant for this reaction? H2­ gas or O2­ gas? Explain your reasoning.   e)    According to the limiting reactant you chose in part d), what is theoretical yield in grams of water that could be produced when 32 g of H2­ gas reacts with 32 g of O2­ gas?

Please help!! 1) 42 g of OCl2 2) 4.30 moles of CCl4 3) 3.76 × 10^34 molecules of SeCl4. Calculate the no. Of chlorine atom in each of the sample.

To help farmers and gardeners , commercial fertilizers have a big three -number "NPK" label on the bag that gives the amounts of three key plant nutrients: nitrogen , phosphorus and potassium. For example , a bag of "-10-10-10" fertilizer has 10% by mass nitrogen , 10% by mass potassium as potash (K2O), and 10% by mass phosphorus as phosphate (P2O5). Suppose a certain fertilizer has the following composition. What should the first (nitrogen) number on the bag label be? That is, calculate the the percent by mass of nitrogen in this fertilizer. Round your answer to the nearest percent.

The molecular formula and the empirical formula for this hydrocarbon are a. C5 H10 and CH2 b. C5 H10  and CH3 c. C4H8 and CH2 d. C4H8 and CH3

CO2(g) + 2 H2Og) CH4g) + 2 02(g) What mass of water is produced by the complete reaction of 10. g of methane? 5.7 g 23 g 18 g O 11 g

Liquid hexane  CH3CH24CH3  reacts with gaseous oxygen gas  O2  to produce gaseous carbon dioxide  CO2  and gaseous water  H2O . If  3.58g  of water is produced from the reaction of  6.03g  of hexane and  11.5g  of oxygen gas, calculate the percent yield of water.

Scientifically, nitrogen and hydrogen at high temperature are converted to ammonia. When 350 grams of Hydrogen gas are added to an excess amount of Nitrogen gas, 80 grams of Ammonia are formed. Calculate the percent yield. * (10 Points) 3H2+ N2> 2NH3

Calculate the number of moles in a 7.89 kg sample of aspirin.

answer the following questions

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ari File Edit View History Bookmarks Window Help Tue 11:3 www-awn.aleks.com alexs Yahoo Search Results Yahoo Search Results ALEKS Quinn Helm Knowledge Check Balance Chemical Equation Online Balancer Knowledge Check Question 2 Qu This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE): CH, оC (CH ), A chemical engineer has determined by measurements that there are 0.0906 moles of hydrogen in a sample of methyl tert-butyl ether. How many moles of oxygen are in the sample? Be sure your answer has the correct number of significant digits. mol x10 ? X Submit I Don't Know 2019 McGraw-Hill Education. All Rights Reserved. Terms of Use 80 AUG 20 MacBook Air

High-density lipoprotein (HDL) cholesterol is the "good" cholesterol because adequate levels reduce the risk of heart disease and stroke. HDL levels between 40. and 59 mg/dL are typical for a healthy individual. What is this range of HDL cholesterol in units of mol/L? The formula for cholesterol is C27H46 O. Range of HDL cholesterol is between and mol/L.

Given the unbalanced chemical equation, CH3OH(l)  +  O2(g) →  CO2(g)  +  H2O(g),  what is the mole ratio between CH3OH and CO2 (CH3OH:CO2)?   Group of answer choices A. 1:1 B. 1:2 C. 2:1 D. 3:2

00 %24 4+ dl w/ S' Enter your answer in the provided box. Using the balanced equation for the combustion of ethanol, answer the following question. C2H,O(1) + 3 02(g) – 2 CO2(g) + 3 H,0 (g) ethanol How many grams of H,0 are formed from 1.2 mol of ethanol? OH 8 #3 5. 9. 2 4 0O

C2H6O (l) + 3 O2 (g) --> 2 CO2 (g) + 3 H2O (g) You have 12.88 mol C2H6O . How many total moles of gas will be produced?

Fill in the blanks to complete the balanced formation reaction for the following compound: Notes for filling blanks: • Enter one reactant per blank, in alphabetical order of the element symbols (such as C, CI, H, N, O, etc.) • Include stoichiometric coefficients with no space before the element (such as "2N2 (g)"); coefficients of "1" may be omitted; fractional coefficients may be written in parentheses or as decimal values (such as "(1/2)N2 (g)" or "0.5N2 (g)") • Include subscript numbers as standard text (such as "N2 (g)") • Phases must be included, with a space between the element and phase (such as "N2 (g)") • Incorrect capitalization of elements will be marked as incorrect Formation reaction of NiCl2 (s) (nickel chloride): → NiCl ₂ (s)