Answer:
Hello
Topsoil consists of most weathered mineral and organic material. Biological agents are also responsible for the breakdown of complex organic matter which releases simple nutrients. This process of mineralisation make soil fertile.
Explanation:
Answer:
To defend against pathogens
Explanation:
Silver is an example of an element. True. Elements are pure substances that cannot be broken down into simpler substances. An atom is the smallest unit of an element that retains all properties of the element.
Alcohols always contain the Hydroxyl functional group (-O H) - (or just hydroxyl group), which is an oxygen atom bound by a covalent (with shared electron pairs) bound to a hydrogen atom.
Answer:
231 moles
Explanation:
From the question, Given:
P = 17.7atm , V = 422litres , T = 393K , n = ? , R = 0.0821 atm L/mol K
We can rewrite the ideal gas equation making n the subject.
This is obtained as follows:
From PV = nRT, n = PV/RT
n = (17.7 × 422) ÷ ( 0.0821 × 393)
n = 231 moles
