Who was the first scientist to measure speed as distance over time?

The shiny nature of silk can be related to

If an atom has 16 protons, 14 neutrons, and 17 electrons, what is the atom's electrical charge?

On what basis do we distinguish between substances and separate them from one another?

The electronegativity value for Mg is 1.2 and the value for O is 3.5. Based on these values, what type of bond is expected for a compound formed between Mg and O?1. pure covalent 2. ionic 3. polar covalent 4. none of these 5. not enough information

The radii of the sodium and potassium ions are 102 pm and 138 pin. respectively. Which compound has stronger ionic attractions, sodium chloride or potassium chloride?

Observe: Change the Surface area from Minimum to Maximum. You can imagine that a solid reactant has been dissolved in a liquid. How does this change how many Reactant B molecules are exposed to Reactant A?

When placed in a 200-mL square box, a substance has a spherical shape and has a volume of 75 mL When placed in a 200-mL circular tube, the same amount of that same substance has a spherical shape and a 75-mL volume.

What is the example to the word camouflage

Given the reaction 2NaOH + H2SO4 = Na2SO4 + 2H2O, what is the total number of grams of NaOH needed to react completely with 196 grams of H2SO4

The mass flow rate of gasoline leaving a refinery is 1610 kg/min. The specific gravity of a gasoline is 0.700. A retail gasoline pump is able to fill a 20.0 gallon automobile tank in 1.80 minutes.