If the farmer plants the same crop in a field year after year the soil becomes less fertile what causes this decrease in fertility

Which is the most abundant isotope of carbon?

Which shows the temperatures of three substances, in order, from greatest to least? water vapor, ice, waterice, water, water vaporwater, water vapor, icewater vapor, water, ice?

Convert 2.5 g of Sodium (Na) to kg of Na.

A generic solid, X, has a molar mass of 78.2 g/mol. In a constant-pressure calorimeter, 12.6 g of X is dissolved in 337 g of water at 23.00 °C. X (s) yeilds X (aq) The temperature of the resulting solution rises to 24.40 °C.

When do you double bong atoms?

1) What is the mass of 5.24 moles of Fe504-7H2O?

The name given to the change of state from gas to liquid is

How many molecules of carbon dioxide, CO2, are present in 388.1 grams?

Radioactive elements will continue to decay until A. They have a stable nucleus B. They have a full octet of electrons C. They have a neutral electrical charge D. They have the same number of electron and protons

Which one of the following elements is stable?