How many kilojouls are required at 0c to melt an ice cube with a mass of 25g

According to the following reaction, how many grams of potassium phosphate will be formed upon the complete reaction of 29.6 grams of phosphoric acid with excess potassium hydroxide? 3KOH (aq) + H3PO4 (aq) K3PO4 (aq) + 3H2O (l)

A piece of gold ingot with a mass of 301 g has a volume of 15.6 cm3. calculate the density of gold.

How would a soil that develop in a warm, wet place be different than one that develop in hot, dry place

Combining Boyle's law and Charles' law forms one presure-temperature-volume relationship and holds the mass of the gas constant. Which equation represents the relationship of the combined gas law?

Which of the following was most likely not present in creating the amino acids of early Earth's waters of the past? A:Nitrogen B:Sulfur C:Hydrogen D:Ammonia

Why is it necessary for the measuring devices to be clean

Copper consists of two naturally occuring isotopes. their masses are 62.930 amu and 64.928 amu. calculate their abundances.

Which statement is true about inorganic compounds? A. They are not made of atoms. B. They contain carbon. C. They are not made from living things. D. They are all elements.

Which domain do you find the most interesting why

Complete the matching exercise below by choosing the correct description of each bond type in aqueous solution. 1. covalent bond 2. hydrogen bond 3. electrons shared by atoms a. electrons shared by atoms b.