<span>At the atomic scale, the kinetic energy of atoms and molecules is sometimes referred to as heat energy. Kinetic energy is also related to the concept of temperature. Temperature is defined as the measure of the average speed of atoms and molecules. The higher the temperature, the faster these particles of matter move.</span>
Okay so, the molar mass (Mr) of O2 is 32g
moles = mass/Mr
moleS= 32.4/32= 1.0125mol
the Mr of KCl is 39.1+35.5= 74.6g
the ratio of moles of KCl to O2 is 2 : 3
therefore moles of KCl is (1.0125/3)×2= 0.675mols
mass =moles×Mr=0.675×74.6= 50.355g
rounds up to 50.3g therefore last answer is correct
<span>He used the patterns he found in properties of known elements to predict the properties of unknown elements.</span>
A. Reproduction
Birth is producing children just as they were which is REproduction