Ethical Concerns for solar power

In an ecosystem, the presence of many different species is critical for the survival of some forms of life when ...

What effect to calcium ions have on the water in ecosystems? A. they add to its hardness B. they increase its acidity C. they reduce its pH D. they decrease its salinity

What is the error in the proof

What best explains the type of energy present in natural gas?

An atom of oxygen has eight electrons and wight protons true or false

What do nucleus act as

Change of state may occur when?

During the combustion of 2.00 g of coal, the temperature of 500 g of water inside the calorimeter increased from 25.0°c to 43.7°c. the specific heat of water is 4.18 j/g·°c. how much heat did the reaction generate?

Catalysts are substances that increase the rate of reaction but can be recovered unchanged at the end of the reaction. Catalysts can be classified as either homogeneous (same state as reactants) or heterogeneous (different state than reactants).

How many molecules are there in 79g of Fe2O3?