Answer:
They are classified as METALS.
Explanation:
Elements are simple substances that cannot be chemically broken down into smaller substances. Based on different characteristics, they are classified into 3 namely:
- metals
- non metals and
- metalloid( mainly act as semi- conductor).
METALS are the type of elements that loses electrons to form positive ion, that is, they are electropositive elements. They are distinguished by the following characteristics:
- LUSTROUS: they have the ability to reflect light from its surface.
- At room temperature: Metals are solid are room temperature with the exception of Mercury which is liquid at room temperature.
- They react and form Basic Compounds
- Great conductor: most metals are great conductors of heat and electricity because they possess free electrons.
- Melting Point: they have high melting points.
Answer:
activation energy hope this is right
Option A
The price elasticity of demand measures buyers’ responsiveness to a change in the price of a good.
<u>Explanation:</u>
Price elasticity of demand holds the responsiveness of need subsequent a variation in a product's cost. In different terms, it’s a process to comprehend out the responsiveness of buyers to inconstancies in cost. Price elasticity estimates the responsiveness of the measure necessitated or outfitted of a good to a shift in its demand.
The price elasticity of demand is the rate fluctuation in the amount demanded of a good or assistance distributed by the percentage shift in the price. Considering the quantity demanded habitually declines with value, the price elasticity coefficient is essentially forever negative.
Answer:
The answer to your question is letter B. 2
Explanation:
Unbalanced reaction
NH₃ + O₂ ⇒ HNO₃ + H₂O
Reactants Elements Products
1 N 1
3 H 3
2 O 4
Balanced reaction
NH₃ + 2O₂ ⇒ HNO₃ + H₂O
Reactants Elements Products
1 N 1
3 H 3
4 O 4
When the reaction is completely balanced the coefficient of O₂ is 2
