An unknown compound contains only c, h, and o. combustion of 2.90 g of this compound produced 6.59 g of co2 and 2.70 g of h2o.

Given that :

Mass of = 6.59 g

Mass of = 2.7 g

Total mass of compound = 2.9 g

Explanation :

From given data,

Mass of C in 6.59 g =

Mass of H in 2.7 g   =

Mass of O = 2.9-(0.0414+0.0412) = 2.82 g

Moles of each atoms

C =

H =

O =

Simpler ratio of moles for  each atom

C =

H =

O =

According to above given values the possible formula for compound will be

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i