Answer:
1)2kclo3=2kcl+3o2
2)2NaCl+F2=2NaF+cl2
3)Pb(OH)2+2HCl=2H2O+PbCl2
4)2Albr3+3k2so4=6kbr+al2(so4)3
5)CH4+2O2=CO2+2H2O
Answer:
Ethylene glycol is a syrupy liquid at room temperature whereas polyethylene glycol is a solid material. The main difference between ethylene glycol and polyethylene glycol is that ethylene glycol has a fixed value for molecular weight whereas polyethylene glycol has no fixed value for molecular weight.
Answer:
0.153 moles of hydrogen.
B) Multiply 10 grams of Zn x (1 mol Zn/65.39 g)
Explanation:
Given data:
Mass of zinc = 10 g
Moles of hydrogen = ?
Solution:
Chemical equation:
Zn + 2HCl → ZnCl₂ + H₂
Number of moles of zinc:
Number of moles of zinc = mass/ molar mass
Number of moles of zinc = 10 g/ 65.4 g/mol
Number of moles of zinc = 0.153 mol
Now we will multiply the moles of Zn with hydrogen:
Zn : H₂
1 : 1
0.153 : 0.153
Answer:No of moles of potassium sulfide (K2S)=0.61671moles
Explanation:
No of moles is given as Mass/ molar mass
Here Mass of potassium sulfide (K2S) =68 grams
Molar mass of potassium sulfide (K2S) = 39.0983 x 2 + 32.065 =110.2616 g/mol
No of moles =68 grams /110.2616 g/mol
=0.61671moles
