Answer:
The determination of melting point can be done using the capillary tube method. ... A small capillary tube is filled with a small amount of the chemical component. The capillary is then heated in a chemical bath along with the thermometer to observe the point of melting of the solid component.Electrically heated apparatus is used to measure the melting point of a solid that melts above 100 degrees Celsius. This apparatus can also be used for even higher melting points.
Explanation:
Answer:
Its the first second and the fourth
Answer:
2.08 moles (3 s.f.)
Explanation:
number of moles
= number of atoms ÷ Avogadro's constant
Avogadro's constant= 6.022 ×10²³
Thus, number of moles
= 1.25×10²⁴ ÷ (6.022 ×10²³)
= 2.08 moles (3 s.f.)
Answer:
2.1 x 10^24 Cr ions
Explanation:
You need to multiply the 3.5 mol by the Avogrado's number (6.022 x 10^23) to get your answer.
