A cross-country skier can complete a 7.5 km race in 45 min. What is the skier's average speed? km/h

Magine that an uncharged pith ball is brought into the electrostatic field of a charged rod. The side of the pith ball closest to the negatively charged end of the rod will A.

How many moles of oxygen gas would be needed to react completely with 8 moles of lithium metal in the following reaction? 4Li + O2 yields 2Li2O

Write and balance the chemical equation for the reaction between carbon monoxide, co (g), and oxygen to form carbon dioxide, co2 (g). use only integers (not fractions) and be sure to include the states of matter.

Explain how chemical reactions apply to law of conservation of matter

What is the concentration of the base (NaOH) in the following titration? A) 3.0 M B) 142.2 M C) 3.79 M D) 3.86 M

Covalent bond name: N6Cl10

Why is benzyl alcohol more soluble in ether than water?

What elements are found in a 9 volt battery

Predict the empirical formula of these compounds. a. C2N2. b. P4O10. c. N2O5. d. NaCl. e. C9H20. f. B2H6. g. K2Cr2O7. h. Al2Br6. i. C6H6. j. SiCl4

What happens when the cold finger is placed in the hot water? what direction did the heat travel from the hot water?