How many molecules are indicated by writing 2 H2O

How do you identify the cation and anion in an ionic compound?

If a person burns 2171 Cal each day, how much energy (kJ) does she burn in 2 days?

What is the systematic name of NH4ClO3

At 10⁻¹⁰ s during the evolution of the universe, formed, which are elementary particles that make up protons and neutrons?

A student is told that both energy and mass must be conserved in every chemical reaction. She measures the mass of Hydrochloric acid and a zinc strip separately.

Why do fish live in water?

How many moles of water are produced when 3.0 moles of hydrogen gas react with 1.8 moles of oxygen gas? Balanced equation: 2H2 + O2 → 2H2O 3.0 moles of water 3.6 moles of water 5.3 moles of water 7.0 moles of water

What is the wavelength of a wave that has a frequency of 60 Hz and a speed of 45 m/s?

Part a write the formula of a complex ion with co3 + as the central ion and three nh3 molecules and three cn - ions as ligands

Pure water is neutral. What is the appropriate justification for this?