Calcule o calor especifico do estanho sabendo que foram necessarias 100 cal para elevar em 20ºC a temperatura de 100 g de estanho

Why does more power equal less time

Positive and negative charges are attracted to one another. Which of the following are attracted to a negative charge: an electron, a proton, a neutron, a nucelus, an atom? Explain your thinking.

Which assumption is not part of the kinetic-molecular theory of gases? A gas consists of particles that move randomly and rapidly. The size of gas particles is small compared to the space between the particles.

Which of the following statements describes a basketball under high pressure (fully inflated) compared to a basketball under low pressure (deflated) ? A In a fully inflated basketball, the particles of gas have lower energy B.

What was the temporary name and symbol for the element coppernicium (Cn)

True or false forensic technicians receive OSHA data sheets regarding toxic chemicals they deal with in their lab.

What did robert boyle believe about atoms

Where do most carbon monoxide emissions come from?

The osmotic pressure exerted by a solution is equal to the molarity multiplied by the absolute temperature and the gas constant RSuppose the osmotic pressure of a certain solution is measured to be 22. atm at an absolute temperature of 353.

Which one of the following is a redox reaction?. 2 Na (g) + Cl2 (g) 2 NaCl (s) A. K2Cr2O7 (aq) + 2 KOH (aq) 2 K2CrO4 (aq) + H2O (l) B. H2O (l) H + (aq) + OH - (aq) C. Na2CO3 (s) + 2 HCl (aq) 2 NaCl (aq) + CO2 (g) + H2O (l) D.