Which of the following elements does NOT form a monatomic ion?

sodium

nitrogen

helium

oxygen

You have been given a piece of evidence indicating that plant and animal life is scarce in this environment. Identify this environment and the correct explanation.

The label on a bottle of vinegar indicates that it is 3.5% acetic acid (CH3COOH). If the density of the solution is 1.90 g/mL, what is the molarity of the solution?

Which of the following units is best when measuring the length of an object? meters cubic meters kilograms kilograms per cubic meter

In bohr's atomic theory when electron moves from one energy level to another energy level closer to the nucleus: A. Energy is emitted B. Energy is absorbed C. No change in energy occurs D. Light is emitted E. More than one of these might occur

What is the chemical formula for ruthenium permanganate

In this unbalanced reaction, which atom is oxidized? hno3 + hbr → no + br2 + h2o

Which of these types of electromagnetic radiation has the lowest energy?

Explain the processes of convergence and divergence

How do the electrons in bonds (bonding domains) differ from lone pairs (non-bonding domains) ?

Сколько граммов соли образуется, если в раствор, содержащий 9,8 г серной кислоты, добавим другой раствор, имеющего 10 г гидроксида натрия?