Hydrogen gas was cooled from 423K to 323K. Its new volume is 75 mL. What was its original volume?

Which of the following is true for a reliable scientific source

Which description indicates that a question is non scientific? A. The question has a narrow focus B. The question leads to a testable hypotheses C. The question addresses a gap in knowledge D. The question relies on moral or social values

Based on the kinetic theory, which statement is true? A. Matter consists of only large molecules. B. Matter is made up of only charged particles. C. The particles of matter have zero kinetic energy and potential energy. D.

Methylene chloride (CH2Cl2) has fewer chlorine atoms than chloroform (CHCl3). Nevertheless, methylene chloride has a larger molecular dipole moment than chloroform. Explain.

Which substance is used for fire proofing agent

Potassium chloride, kcl, sodium sulfate, na2so4, glucose, c6h12o6, carbon dioxide, co2 and ammonium phosphate, (nh4) 3po4, are soluble in water.

Use the periodic table to select the element from the drop-down menu that has the correct relative electronegativity.

List the symbols for all the elements with electron configurations that end as follows. Each n represents an energy level.

Why is it necessary for the measuring devices to be clean

Copper consists of two naturally occuring isotopes. their masses are 62.930 amu and 64.928 amu. calculate their abundances.