In which of the following compounds is the mass ratio of chromium to oxygen closest to 1.62 to 1.00?
a) cro3
b) cro2
c) cro
d) cr2o

The answer to your question is letter A

Explanation:

Data

Mass ratio 1.62 to 1.00

Atomic mass Cr = 52 g

Atomic mass O  = 16

Process

1.- Calculate the proportion Chromium to Oxygen to each possible solutions

a) CrO₃   =  

b) CrO₂   =  

c) CrO     =

d) Cr₂O   =    

The mass ratio of chromium to oxygen closest to 1.62 to 1.00 in CrO2 (option B).

MASS OF CHROMIUM AND OXYGEN IN EACH COMPOUND:

Atomic mass of chromium = 52g/mol

Atomic mass of oxygen = 16g/mol

The ratio of the masses of chromium to oxygen is as follows:

To get the simplest mass ratio, we divide each mass by the smallest as follows:

From the above mass ratios, it can be observed that the closest to 1.62 to 1.00 is in CrO2.

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it should be all of them because it asks if you included all of those in your answer

explanation:

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.