What are some tools that scientists use to make observations

Think of a situation where "particle motion" is a blessing in disguise for the entire humanity.

Tekanan uap jenuh air murni pada suhu 20°C adalah 18 mmHg. apabila pada temperatur yang sama sebanyak 120 gram zat x dilarutkan dalam 990 gram air, tekanan uap larutan menjadi 17,37 mmHg, hitunglah massa molekul relatif zat x?

Which of the following are physical rather than chemical properties of hydrogen gas (H2) ? Check all that applya. H2 gas does not conduct electricity. b. Liquefied H2 boils at a very low temperature (-253.7oC) c.

If you wanted to design an experiment to show that the solubility of sugar in tea varies according to the temperature, what variable would remain constant?

Are all gas particles of same sizes?

How many sugar molecules are in a 3 M sugar solution (V=1L) ?

Which element would you expect to be less metallic? (a) Cs or Rn (b) Sn or Te (c) Se or Ge

Which of these planets are cassini currently orbiting Mars Saturn Mercury Jupiter

La temperatura a la cual las partículas de los gases no se mueven es: 1) Cero grados centigrados 2) 273 K 3) cero absoluto 4) cero grados Fharenheit

What appears to happen to the moon as it goes through the cucle