1. Why do health practitioners recommend us to use 70% alcohol than 40% alcohol as disinfectant to fight the pandemic COVD- 19?​

Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass

Which statement is true according to the kinetic theory? a. molecules of different gases with the same mass and temperature always have the same average density. b. molecules of different gases with the same mass and temperature always have the same average volume. c. molecules of different gases with the same mass and temperature always have the same pressure. d. molecules of different gases with the same mass and temperature always have the same molecular mass. e. molecules of different gases with the same mass and temperature always have the same average kinetic energy.

Amatch has about 21 milligrams of red phosphorus coating the tip. how many atoms of phosphorus is this?