I am a solid at room temperature, have 3 valence electrons and I make foil. What am I?

An example of a very slow acting hormone is: A.) Adrenaline B.) Progesterone C.) Anti-diuretic hormone

How many grams of Cl are in 38.3 g of CHCl3?

Which equation is balanced? Mg+O2→2MgO 2Na+F2→2NaF 2Al+3O2→Al2O3 2Al+F2→2AlF3

How can humidity be used to predict if it is going to rain? A low humidity means that it is going to rain. A high humidity means that it will not rain. A high humidity increases the chance it will rain. Humidity cannot be used to predict rain.

What is the purpose of the solvent in chromatography?

23 Which term identifies the half-reaction that occurs at the anode of an operating electrochemical cell? (1) oxidation (3) neutralization (2) reduction (4) transmutation

Which of the following is true? A) Gas atoms subjected to electricity emit bright lines of light. B) Gas atoms absorb white and emit a continuous spectrum of light. C) Gas atoms under high pressure emit dark lines against a continuous spectrum.

What common household element can, over time, reduce airflow, insulate components, reduce heat exchange or even cause the system to hang or reboot?

Clouds that form at an elevation of 3 kilometers will most likely be composed of A) raindrops B) ozone C) ice crystals D) sleet

Describe how glacial erosion influenced the topography of Ohio.