HELPPP!!! ""how do we see the universe now as it was in the past""

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?