Suppose a student measures out his cyclohexane according to step 3. He then allows the cyclohexane to sit at room temperature for 20 minutes before continuing to step 4. As a result of his technique error here, will the molecular weight he determines for naphthalene be higher or lower than the true value

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

Compare and contrast physical changes with chemical changes.

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils