Question

Exerci
1. Choose the most correct option:
A. A sample of pure water, whatever the
source always contains
........... by

mass of oxygen and 11.1 % by mass of
hydrogen.
a. 88.8 b. 18 c. 80 d.16
B. Which of the following compounds can
NOT demonstrate the law of multiple
proportions ?
a. NO, NO, b. CO, CO
c. H,O,H,O, d. Na S, NaF
C. Which of the following temperature
will read the same value on celsius and
Fahrenheit scales.
a. - 40° b. +40°
c. -80°
d. -20°
D. SI unit of the quantity electric current is
a. Volt b. Ampere
c. Candela d. Newton
E. In the reaction N, + 3H, - 2NH,,
the ratio by volume of N,, H, and NH,
is 1 : 3:2 This illustrates the law of
a. definite proportion
b. reciprocal proportion
c. multiple proportion
d. gaseous volumes​

Answer 1

Answer:

a=88.8

a=-40°

b=ampere

d=gaseous volums

Explanation:

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