It can be concluded that gastric juice
contains enzymes
is acidic
is a mixture
has pH value of 7
Correct answer is B
No explanation has been provided for this answer.
NH3
SO2
HCI
CO2
Correct answer is D
No explanation has been provided for this answer.
In which of the reactions represented by the following equations is HNO3 behaving as a typical acid?
CaO + 2HNO3 → Ca(NO3) 2 + H 2O
Cu + 4HNO3 → Cu(NO 3)2 + 2H2O + 2NO2
S + 6HNO3 → H2SO 4 + 6NO2 + 2H2O
P + 5HNO3 → H 3PO 4 + 5NO2 + H2O
Correct answer is A
No explanation has been provided for this answer.
Copper turnings
Copper (ll) trioxocarbonate (IV)
Copper (ll) oxide
Copper alloy
Correct answer is D
No explanation has been provided for this answer.
A mixture of calcium chloride and calcium trioxocarbonate (IV) in water can be separated by
evaporation
sublimation
distillation
filtration
Correct answer is D
No explanation has been provided for this answer.