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 of the following is an example of a mixture? A. NaCl B. CO2 + H2 + O2 Ос. Са D. C6H1206 Reset Selection

Match each term to its example. element compound ion isotopes cation anion A. an atom that has developed a positive charge B. sodium chloride (NaCl) C. an atom that has lost or gained an electron D.

Which compound contains both covalent and isotonic bonds? A) CaCO₂ B) CO₂ C) H₂O D) NaCl

A radioactive nuclide has 53 protons and 78 neutrons. Which is the symbol of this nuclide? Superscript 53 subscript 78 upper I. Superscript 78 subscript 53 upper P t. Superscript 131 subscript 78 upper P t. Superscript 131 subscript 53 upper I.

How many grams of H20 is formed with 0.75 moles of NaOH

1. Calculate the end velocity of a rocket that traveled 16km in 2 seconds. distance time 2. Calculate the rockets acceleration m with a start velocity of 0m/s and the end velocity from #1 for 10 seconds.

How are linear and nonlinear graphs alike

Uranium nuclei split during nuclear fission true or false

Calculate the mass of 2.25*10^22tungsten atoms.

Which weathering process involves physical forces but not chemical reactions or dissolving of minerals