Total mass of the sample =126.01 g
percent by mass of Sodium=27.40%
percent by mass of Hydrogen=1.198%
percent by mass of Carbon=14.300%
percent by mass of Oxygen=57.138%
Now the
Total mass of the sample of baking soda =Mass of sodium+Mass of hydrogen+mass of carbon+mass of oxygen.
Total mass of the sample of baking soda =34.48 g +1.51 g+18.02 + 72.00 g
Total mass of the sample of baking soda =126.01 g
percent by mass of each element =mass of element / Total mass of sample x 100
Sodium =34.48 g/126.01 g x 100=27.40%
Hydrogen =1.51 g/126.01 g x 100=1.198%
Carbon =18.02g/126.01 g x 100=14.300%
Oxygen =72.00g/126.01 g x 100=57.138%
See similar question here: brainly.com/question/18863998
Answer:. Ca should displace Mn
Explanation:
Calcium is high up in the activity series of metals. Calcium has a very negative redox potential of -2.87 V, next only to potassium. Transition metals of which Manganese is one, does not have such very negative redox potentials so they can easily be displaced by a more highly reactive metal such as Calcium. Elements of group 1 and 2 are very highly reactive.
Answer:
less dense
Explanation:
the reason that the density would be lower is because the air bubbles keep the maximum amount of atoms possible from being in that space. imagine pouring a glass of soda from a freshly opened bottle, at first it looks like there's a lot in the glass but as the bubbles dissipate, there's less and flat soda appears to have even less in the glass. i hope this analogy helped :)
Answer:
52.206 kg
Explanation:
From the given information:
Mass of hexane C6H14 =
= 7391.9 g
Mass of octane C8H18 =
= 2682.7 g
Mass of decane C10H22 =
= 9225.4 g
However, recall that:
number of moles of an atom = mass/molar mass
∴
For hexane, no of moles = 7391.9 g/86.18 g/mol
= 85.77 moles
For octane, no of moles = 2682.7 g/114.23 g/mol
= 23.49 moles
For decane, no of moles = 9225.4 g/142.29 g/mol
= 64.84 moles
Therefore:
number of moles of CO2 produced = (6 × 85.77)+(23.49)+(10×64.84) moles
= 1186.51 moles
Finally, the mass of CO2 produced is:
= 1186.51 mol × 44 g/mol
= 52206.44 g
= 52.206 kg
82% of drinking water supplies in Ireland are sourced from surface water (rivers and lakes) and 18% comes from groundwater - it depends where you live (quick g00gle search should answer you question)