Question

Составьте уравнения реакций горения следующих веществ в кислороде:а) магния б) кальция в) кремния г) водорода д) силана(SiH4)

Answer 1

2Mg+o2=2mgo
2Ca+o2=2cao
si+o2=sio2
2h2+o2=2h2o
sih4+2o2=sio2+2h2o

Answer 2

Sure! I can help you with that. Here are the balanced chemical equations for the combustion reactions of the given substances in oxygen:

а) Magnesium (Mg): 2 Mg + O2 → 2 MgO

b) Calcium (Ca): 2 Ca + O2 → 2 CaO

в) Silicon (Si): Si + O2 → SiO2

г) Hydrogen (H2): 2 H2 + O2 → 2 H2O

д) Silane (SiH4): SiH4 + 2 O2 → SiO2 + 2 H2O

In these equations, the reactants are on the left side of the arrow, and the products are on the right side. The coefficients in front of the formulas ensure that the equation is balanced, meaning that the number of atoms of each element is the same on both sides of the equation. This preserves the law of conservation of mass.

Please note that the equations provided assume complete combustion, where the substances react completely with oxygen to form the respective oxides.