Parents SHOULDN'T avoid sharing their own mistakes with children.
Density can be calculated using the following rule:
density = mass / volume
Therefore,
volume = mass / density
For diamond:
we have mass = 0.5 grams and density = 3.51 g / cm^3
Substituting in the rule, we can calculate the volume of diamond as follows:
volume = 0.5 / 3.51 = 0.14245 cm^3
For graphite:
we have mass = 0.5 grams and density = 2.25 g / cm^3
Substituting in the rule, we can calculate the volume of graphite as follows:
volume = 0.5 / 2.25 = 0.2223 cm^3
No 11) one mole of Zn and two mole of HCL to get one mole of ZnCl and one mole of H2.
no 12) one mole of Mg and two mole of AgNO3 to get one mole of Mg(No3)2 and two mole of Ag.
no 13) one mole of CaCl2 and two mole AgNO3 to get two mole of AgCl and one mole of Ca(NO3)2.
no 14) two mole of Na3PO4 and three mole of BaCL2 to get one mole of Ba3(PO4)2 and six mole of NaCl.
no 15) two mole of NH4Cl and one mole of Ba(OH)2 to get one mole of BaCL2,two mole of NH3 and two mole of H2O.(am not much sure about this).
no 16) one mole of Na2CO3 and two mole of HCL to get two mole of NaCl,one mole of H2O and one mole of CO2.
no 17) one mole of K3PO4 and three mole of AgNO3 to get three mole of KNO3 and one mole of AgPO4.
Answer:
0.25 g of U-235 isotope will left .
Formula used :
where,
N = amount of U-235 left after n-half lives = ?
= Initial amount of the U-235 = 1.00 g
n = number of half lives passed = 2
0.25 g of U-235 isotope will left .
Acetylene can be converted into acetic acid in 2 steps:
1. reaction of acetylene with water (in the presence of sulphuric acid, and mercuric sulphate as catalysts) to produce acetaldehyde.
2. acetaldehyde is then oxidized (with potassium dichromate for example) to produce acetic acid.
this overall reaction is given by the following equation:
