Please help asapwill mark brainliest a compound is made up of 56.34% oxygen and phosphorus. state the empirical formula and name the compound​

Iknow #2 is d. i just need to know why

Find the mass in grams of 1.37x1020 particles of h3po4

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.