C
In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction.
*Law of conservation of mass
The law of conservation of mass states that the total mass of substances taking part in a chemical reaction is conserved during the reaction.
Answer:
There are 12 atoms in the compound
A node is defined as a point around the nucleus where the probability of finding an electron is zero.
A nodal plane passes through the nucleus.
The number of nodal planes for a certain orbital is equivalent to the angular momentum quantum number (l) of this orbital.
Therefore, since the orbital g has l=4, therefore,
the number of nodal planes = 4
Pb(NO3)2(aq)+2 NaBr (aq) PbBr2(s)+2 NaNO3(aq)
The molar mass of Pb(NO3) is 85 grams
The answer is 0.0035
In order to figure out kg, you have to know that 1 milligram is equal to 1/100000 kilograms. You take the amount of mg's that you have, which is 3500, and divide it by 1000000 which will give you your answer.
3500/1000000= 0.0035 kg