Answer:
0.125
Explanation:
For 250 ml it is 0.5 moles. If you know the Molecular weight of NaCl you multiply with 0.5 to get the answer. Required number of moles =2⋅0.25=0.5 moles.
Mass = molecular mass x mol
mass = 176.128 x 0.000142
mass = 0.025 g (3 s.f)
The
magnesium metal is highly reactive and can ignite in contact with moisture or
even air. The skin is usually covering in moisture, so the contact with it may cause
a reaction that can produce irritation, lesions and even burns.
Crucible
tongs are mandatory to handle hot crucibles to avoid skin burns and accidents
during experimental procedures. Crucible tongs work with the crucible; their shape
was designed to firmly hold it to avoid spills.
Answer:
12 mol O2
Explanation:
8 mol KCl (3 mol O2/ 2 mol KCl) =12 mol O2
Answer:
The type of mixture whose components are seen through our naked eyes is known as heterogeneous mixture. it is a mixture of small constituent parts of substances.
for eg, mixture of sand and sugar.
<em><u>hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em>
