4.5 grams of acetylene react completely in this reaction, but only 12 grams of carbon dioxide are produced. What is the percent yield in this reaction? (Write the value of your final answer AND describe what you did to get it.)

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles