Answer:
Its right you dont have to change anything
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:
Explanation:
Hello there!
In this case, according to the given chemical reaction:
2 Al + 3 Cl2 --> 2 AlCl3
Whereas there is a 2:3 mole ratio of aluminum to chlorine; it will be possible for us to calculate the required grams of aluminum by using the equality 22.4 L = 1 mol, the aforementioned mole ratio and the atomic mass of aluminum (27.0 g/mol) to obtain:
Regards!
Answer:
Heat is converted completely into work during isothermal expansion
Explanation:
first law:
∴ ΔU = CvΔT = 0....isothermal
⇒ Q = - W
<span>someone is doing vansalism or trying to break in</span>