When we test sucrose with seliwanoff's test what would the result be positive or negative ? Before and after hydrolysis of sucrose .

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

The solubility of barium nitrate is 9.02 g/100 g h2o at 20°c. a 15.2 g sample of barium nitrate is added to 200.0 g of water at 20°c. is the solution saturated, unsaturated, or supersaturated? a. unsaturated b. saturated c. supersaturated

In which phase of mitosis do the spindle fibers pull the chromosomes apart to opposite sides of the cell ?