What is a chemical symbol

What is 673.5 in scientific notation

6.8. Liquid methyl ethyl ketone (MEK) is introduced into a vessel containing air. The system temperature is increased to 55°C, and the vessel contents reach equilibrium with some MEK remaining in the liquid state.

The percent composition of all elements in HClO3 is: a. 2% H, 20% Cl, 78% O b. 1% H, 42% Cl, 57% O c. 2% H, 68% Cl, 30% O d. None of the above

Au (CN) 3 + Zn - > Au + Zn (CN) 2

A sample of a compound contains 60gC and 5.05gH. it molar mass is 78.12g/mol what is the compound molecular formula

Which metal exist in liquid state and can be cut with knife?

Based on the ionization energies of the alkali metals, which alkali metal would you expect to undergo the least exothermic reaction with chlorine gas? Express your answer as a chemical symbol.

An atom of a particular element is traveling at 1.00% of the speed of light. The de Broglie wavelength is found to be 3.31 * 10-3 pm. Which element is this? Prove it.

Is a whale a abiotic or biotic

If the half-life of hydrogen-3 is 11.8 years, after two half-lives the radioactivity of a sample will be reduced to one-half of the original amount. If the half-life of hydrogen-3 is 11.