What is the name of the scientist who discovered that atoms have positive charges

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate

Rays from the sun are not considered matter true or false

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.