Answer:
Sodium Bicarbonate on decomposition produces Carbon dioxide gas and Water vapors.
<span> 2 NaHCO</span>₂<span> </span> →<span> Na</span>₂<span>CO</span>₃<span> (s) </span>+ <span> CO</span>₂<span> (g) + H</span>₂<span>O (g)
</span>
Explanation:
Let suppose you burn 168 g ( 2 moles ) of NaHCO₃, a gas will produced and product is left behind. On measuring the product formed it will be almost equal to 105 g. This shows that the product is Na₂CO₃ and 1 mole of it is being produced after decomposition of sodium bicarbonate.
Answer:
A covenant bond I’d a chemical bond involving electron pairs between atoms.
Explanation:
C.
Protons is 8 so the atomic number will be 8.
Number of neutrons= atomic mass - atomic number
16-8 = 8.
Wading birds live successfully in the swamp because : B) Their long legs allow them to wade in the waters without getting wet.
Explanation:
Wading birds are common habitat in swamp and muddy areas.
Some wadding birds are crane, egret, heron, sandpipers and ibis
Some characteristics of wading birds are:
- long, thin legs. Also, they have large toes
- long bills and long strong necks
Long legs of wadding birds allow them to walk easily in wetland without getting their feathers wet.
They live in water or near water, so their food are mainly aquatic insects, small amphibians and fishes.
Wading birds are also called shorebirds.
75 g of sodium hydroxide is present in the solution.
<u>
</u><u>Explanation</u><u>
:</u>
Given
:
Molarity of sodium hydroxide solution= 2.5 M
Litres of Solution = 750 mL
Molar mass of NaOH = 40 g/mol
To Find:
Grams of Sodium Hydroxide =?
Solution
:
Molarity of the solution is expressed in Litres, So Converting 750.0 mL to Litres we have
750.0mL=0.750 Litres
Grams of Solution
, moles= 
Where
M = Molarity
L = litres of solution
mol= moles of solute
Mol = 1.875
Also the molecular weight of NaOH is 40.00 g/mol
Grams of sodium hydroxide = 1.875 mol * 40.00 g/mol = 75 g
