A particle that contains 9 protons, 10 neutrons and 10 electrons is a
negative ion
positive ion
neutral atom of non-metal
neutral atom of a metal
Correct answer is A
No explanation has been provided for this answer.
What mass of water is produced when 8.0g of hydrogen reacts with excess oxygen?
[H = 1, O = 16]
36.0g
8.0g
72.0g
16.0g
Correct answer is C
2H2 + O2 → 2H2O
4 → 36
8 → X
X → (8/6) * 36
= 72.0g
2 Y
2 Z
Z
Y
Correct answer is C
No explanation has been provided for this answer.
glucose and glucose
glucose and fructose
fructose and fructose
galactose and glucose
Correct answer is B
No explanation has been provided for this answer.
Alkanones are generally obtained by the oxidation of
primary alkanols
secondary alkanols
tertiary alkanols
alkanoic acid
Correct answer is B
No explanation has been provided for this answer.