Answer:
Avogadro's number
Explanation:
Avogadro number:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
It means 1 mole of any substance contain 6.022 × 10²³ number of representative particles.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
35.45 g Cl⁻ = 1mole = 6.022 × 10²³ Cl⁻ ions
1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen
If the container is closed, all vapor generated by boiling will stay in the container. If it is at constant volume, the pressure will rise in it. ... Heat pipes boil a liquid at one end and condense it at the other. So the system can remain closed because the contents don't increase: you put in heat, you take out heat.
Well, depending on the charge, it could be Cu; if it has a charge of 2+
Answer:
41. False
42. True
43. False
44. False
45. True
46 - 48. Unsure (I don't take Biology, sorry.)
Explanation:
41.
FeS and HCl are the reactants of the chemical equation. Hence, false.
42.
It is common knowledge that HCl and H₂SO₄ are acids. Hence, true.
43.
Vinegar contains acetic acid CH₃COOH, which isn't a base. Hence, false.
44.
Fluorescence is actually the emittance of light by <em>any substance</em> due to radiation. Hence, false.
45.
Yes, the image produced by a plane mirror is laterally inverted. Hence, true.
This is what I got hope it helps
