1 is true,
<span>2 is definitely false </span>
<span>3 is also completely false because </span>
<span>4 is true. </span>
<span>So 1&4 </span>
Answer:
Ionic bonds are more powerful than covalant bonds
Explanation:
This is because of their strong lattice structure formed by the attraction between metals and non-merals.
Molecules donot exhibit crystal lattices because of the covslent bonds present in between their molecules
The number of grams of Mgo that are produced is calculated as follows
calculate the moles of Mg used
that is moles =mass/molar mass
= 3.45 g/ 24.305g/mol = 0.142 moles
write the equation for reaction
that is 2 Mg + O2 = 2 MgO
by use of mole ratio between Mg to Mgo which is 2:2 this implies that the moles of Mgo is also 0.142 moles
mass of Mgo= moles x molar mass of MgO
molar mass of Mgo = 24.305 + ( 3x15.999) = 72.302 g/mol
mass= 0.142 mol x 72.302 g/mol= 10.27 grams
No it is not, texture is a physical property
