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Hydrоcаrbоns аre а grоup of molecules that contain mainly carbon and hydrogen. They are often called by common names and not traditional scientific names because of their common elements. The following are examples of these hydrocarbons. Acetylene gas is used in welding. Ethylene gas is the precursor to the plastic polyethylene. The suffix ending of —ane means that the carbons are all joined by a single bond. The ending —ene means that the compounds contain double bonds. The gas we call natural gas is primarily methane gas with smaller amounts of ethane gas. Propane gas fires up the backyard barbecue grill. Butane gas is the fuel in lighters. All six of these fuels are compounds that only contain the elements carbon and hydrogen. Answer the following questions in the corresponding space on the chart below. Use the same format as the examples shown. (6 points total) Acetylene has a carbon-to-hydrogen atom ratio of 1 to 1. What is the carbon-to-hydrogen mass ratio for this compound? (1 point) Ethylene has a carbon-to-hydrogen mass ratio of 6 to 1. What is the carbon-to-hydrogen atom ratio for this compound? (1 point) Ethane has a carbon-to-hydrogen atom ratio of 1 to 3. But one mole of this gas weighs 30 g, not 15 g. What is the molecular formula of ethane? (1 point) Note: Subscripts won’t work; use the format CnHm for CnHm. Methane has a carbon-to-hydrogen mass ratio of 3 to 1 and a molecular weight of 16 g/mol. What is the molecular carbon-to-hydrogen atom ratio for this compound? (1 point) Propane has a carbon-to-hydrogen mass ratio of 9 to 2. One mole of this compound is 46 g/mol. What is the carbon-to-hydrogen atom ratio for this compound? (1 point) Butane has a carbon-to-hydrogen atom ratio of 2 to 5. What is the carbon-to-hydrogen mass ratio for this compound? (1 point) Compound C-to-H Mass Ratio C-to-H Atom Ratio Molecular Formula Acetylene [acetylene] 1:1 Ethylene 6:1 [ethylene] Ethane 1:3 [ethane]* Methane 3:1 [methane] Propane 9:2 [propane] Butane [butane] 2:5
When plаced in а flаme, the element sоdium burns with a bright yellоw cоlor. The element’s name was derived from the Latin word natrium. This element is a member of which group?