Which of the following measurements is used to measure the enthalpy of combustion?
Question Progre
A. Measuring the change in temperature of a beaker of water.
B. It cannot be measured, only calculated using the equation: q = MCAT.
C. None of these
D. Measuring the change in temperature when two liquids are mixed.

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

What is the formula of the ionic compound composed of calcium cations and chloride anions