In what kind of reaction does one element replace a similar element in a compound?

Which of the following statements correctly describe nitrogen and its role as a plant nutrient? -Nitrogen is a macronutrient in plants. -Nitrogen-fixing bacteria in the soil convert N2 to NH3.

Where are the smallest, lightest hydrocarbons captured in a distillation tower?

Calculate the percentage composition of (NH4) CO3

An unknown solution has a ph of 8. how would you classify this solution? a. acidic b. neutral c. basic d. there is not enough information to answer the question

What is the formula of nitrous acid

An element X has two isotopes. X-15 has 7 protons and 8 neutrons. Determine the atomic number and mass number of the second isotope, which has 10 neutrons in its nucleus. a. atomic number = 8; mass number = 9 b. atomic number = 8; mass number = 17 c.

Which statement best describes the direction of heat flow by conduction between two samples of the same material? 1. Heat flows from faster molecules to slower molecules when they are near. 2.

Delta H equals 98.8 KJ, and Delta S equals 141.5 J/K. Is this reaction spontaneous or nonspontaneous at high and low pressure

Secondary consumers are eaten by?

What happens to atomic radius down a group?