Answer:
1. Alpha particles consist of two protons and two neutrons.
Explanation:
Alpha particles are generally produced in the process of alpha decay, a radio active decay in which an atom loses an helium atom.
AN alpha particle is identical to the helium particle. The helium particle has mass number of 4 and atomic number of 2. This means;
Number of protons = 2
Number of neutrons = Mass Number - Atomic Number = 2
The correct option is option 1.
Answer:
Dilute
Explanation:
Henry's law
This is a physical chemistry law , according to which , in a dilute solution , i.e. , with less concentration of solute , the amount of the dissolved gas in the liquid is directly proportional to its partial pressure above the liquid .
Henry's law constant is the proportionality constant .
The application of Henry's law is , the carbonated soft drinks , which have dissolved carbon dioxide .i.e. ,
By increasing the pressure , the solubility of the gas also increases .
Answer:
The process of evaporation occurs
Explanation:
Answer:
1.4% salt residue
Explanation:
Mass percent can be found using the formula:
mass of solute (grams)
------------------------------------ x 100%
mass of solution (grams)
Therefore, since you have been given the weights of both the solute and solution, you can use the formula to solve for the mass percent.
3.50 g salt residue
----------------------------- = 0.014 x 100% = 1.4% salt residue
250 g salt solution
Answer:
Therefore, 2 moles of oxygen will be required to oxidize 2.66 moles of oxygen. 72g of Aluminium will be completely oxidized by 44.8 lit of oxygen at STP.
