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

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves