Answer:
0.371
Explanation:
number of moles = mass / Ar
= 23.8g / 32.1 + (16.0 × 2)
= 0.37129485179 = 0.371 (3 s.f).
hope it helps :)
For every question, you simply have to use the molar ratio method.
First find the mole of one substance using the formula, Moles=Mass/Mr.
Now compare them and find the moles of the substance whose mass you need using molar ratio. Use the formula written above to find the theoretical Mass required for reaction.
Greenhouse gas is your answer it is causing the greenhouse effect of trapping heat in the earth
<h2>ASNWER:</h2><h2>______________________________________</h2>
The Element Bromine belongs to the 7th group "THE HALOGENS" in the periodic table. The general oxidation number of the Halogens is -1 thus Charge on bromide ion is expected to be -1.
<h2>______________________________________</h2>
<span>Yes its H2O , the H2O and the OH- are acid/Base Conjugate pair................just like NH3 and NH4
</span>