The products of the thermal decomposition of ammonium trioxonitrate(v) are?
Nitrogen (I) Oxide and Water
Ammonia and Oxide
Nitrogen and Water
Nitrogen (IV) Oxide and Water
Correct answer is A
NH\(_4\)NO\(_3\) Ammonium Trioxonitrate(V) , unlike all other metallic trioxonitrates(v), decomposes on heating to give nitrogen(i)oxide N\(_2\)O and water.
P
Q
R
S
Correct answer is B
They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore, they rarely react with other elements since they are already stable.
Autonomous costs
Service costs
Supporting cost
Subsidiary costs
Correct answer is B
Service costs are the costs incurred to provide or deliver a service. They have the element of manufacturing cost but are not directly involved in production. They include cost such as the use of power and water; fee for use of furniture carpeting/curtains, costs such as cleaning of common areas, costs of concierge or maintenance of common garden.
1.650atm
0.825atm
0.413atm
0.275atm
Correct answer is A
Using the combined gas law formula,
Given that P\(_1\) = 0.825, V\(_1\) = 2.76 L, V\(_2\) = 1.38 L, P\(_2\) = ?
And T1 = T2; we would have P\(_2\) = [ P\(_1\) X V\(_1\) ] ÷ V\(_2\)
: [0.825 X 2.76] ÷ 1.38
= 1.650atm
Oxyethene
Oxyhydrocarbon flame
Oxyacetylene flame
Oxymethane flame
Correct answer is C
The reaction of calcium carbide with water, producing acetylene and calcium hydroxide, was discovered by Friedrich Wöhler in 1862. This reaction was the basis of the industrial manufacture of acetylene, and is the major industrial use of calcium carbide.