Answer:
D.- Using a sterile liquid and eliminating exposure to microorganisms.
Explanation:
Remember that Redi´s experiment is going to be with different jars cover the top. In this case, if the liquid is sterile that means any living thing is present there. so if by passing the time, there are no microorganisms, this is going to be the results that the spontaneous generation does not exist. From a non living liquid there can not produce a living thing.
Answer:
adds; convection
Explanation:
because in order for ice to melt, you need to add heat energy. convection is when you make something hot rise and something cold melt.
Answer:
3.46 x 10²⁴ molecules.
Explanation:
- <em>Knowing that every one mole of a substance contains Avogadro's no. of molecules (NA = 6.022 x 10²³).</em>
<em><u>Using cross multiplication:</u></em>
1.0 mole of HBr → 6.022 x 10²³ molecules.
5.75 mole of HBr → ??? molecules.
∴ The no. of molecules of HBr are in 5.75 mol = (6.022 x 10²³ molecules) ( 5.75 mole) / (1.0 mol) = 3.46 x 10²⁴ molecules.
The crackling sound Is mainly to do with chemistry, The fireworks are filled with lead oxide, which turns into lead atoms as the firework explodes and heat up—— whistling sounds, the whistle is down to the tube being narrow one, thus rockets make a whistling noise
