In the explosion of a hydrogen-filled balloon, 0.20 g of hydrogen reacted with 1.6 g of oxygen. How many grams of water vapor are formed? (Water vapor is the only product.) What formula should I use?

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?