Given the atomic mass of select elements, calculate the molar mass of each salt. element molar mass (g/mol) beryllium (be) 9.012 magnesium (mg) 24.31 cobalt (co) 58.93 cadmium (cd) 112.41 bromine (br) 79.90 match the numbers to the appropriate blanks in the sentences below. make certain each sentence is complete before submitting your answer. hints 88.91 gmol 104.21 gmol 168.81 gmol 138.83 gmol 184.11 gmol 218.73 gmol 192.31 gmol 272.21 gmol 1. the molar mass of cobr2 is . 2. the molar mass of bebr2 is . 3. the molar mass of mgbr2 is . 4. the molar mass of cdbr2 is .

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.

Imagine one batch of soup (batch “a”) is made with 8.19 g/can of salt, according to the recipe, and a second batch of soup (batch “b”) is made with 8.32 g/can of salt. explain which batch would be more resistant to frost damage if it is shipped a great distance in winter and explain why.

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i