NEED HELP ASSP!! (If you could show all the steps or work to get the answers that would be greatly appreciated)

62. A compound was found to contain 49.98 g of carbon and 10.47 g of hydrogen. The molar
mass of the compound is 58.12 g/mol. Determine the molecular formula.
63. A colorless liquid
composed of 46.68% nitrogen and 53.32% oxygen has a molar mass of
60.01 g/mol. What is the molecular formula?
64. When an oxide of potassium is decomposed, 19.55 g of K and 4.00 g of O are obtained.
What is the empirical formula for the compound?
65. Challenge Analysis of a chemical used in photographic
developing fluid yielded the percent composition data shown
in the circle graph to the right. If the chemical's molar mass is
110.0 g/mol, what is its molecular formula?
66. Challenge Analysis of the pain reliever morphine
yielded the data shown in the table. Determine
the empirical formula of morphine.

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)