How many seconds are in a year scientific notation

Why is uranium 235 the most commonly used isotope for nuclear fission in current uses in nuclear power generation?

In a chemical reaction, 12 grams of sodium must combine with how many grams of chlorine to produce 30 grams of table salt?

Out if cobalt and copper, which is used more in magnets?

Glucose and fructose are monosaccharides that have the same chemical formula, C6H12O6. However, they do not react the same chemically. Which of the following generalizations can explain this?

Separating sand from gravel physical change or chemical change?

Which microscope came out first

Which exerts greater pressure on the floor-standing flat-footed or standing on tiptoe? on tiptoe, because the force acts over less area on tiptoe, because the force acts over more area flat-footed, because the force acts over more area flat-footed,

1. Sara tells Michael she is 160 centimeters tall, while Michael says he is 60 inches tall. If there are 2.54 centimeters in an inch, who is taller

How do you tell if a compound is polar or non polar

What two ions are central to the arrhenius definitions of acids and bases?