All scientists try to base their conclusions on?

expert opinions?

data and measurements?

evaluation of historical records?

popular opinion?

What is the molecular formula of C3H2N with 260.24g/mol

The elements helium and xenon are all part of the same

What do the lines making a circle around the high-pressure areas indacate

Most continuous spectra are examples of what we also call thermal radiation spectra. Why do we call them "thermal" spectra?

Which of the following best expresses the definition of an open system? Energy can enter or leave the system but matter cannot. Heat and matter are both able to enter or leave the system. Matter can enter or leave the system but energy cannot.

Selena is growing geraniums outdoors in a pot. During the day, the temperature in her area averages 22°C (72°F). At night, the temperature has been dropping to around 13°C (55°F). What advice would you give to Selena and why?

How many carbons are in a molecule of hexane?

How does th composition of a mixture of hydrogen and oxygen differ from the composition of a compound containing hydrogen and oxygen?

You are asked to prepare 500 mL 0.250 M acetate buffer at pH 5.00 using only pure acetic acid (MW=60.05 g/mol, pKa=4.76), 3.00 M NaOH, and water. Answer the questions regarding the preparation of the buffer. 1.

Which direction do electrons move in when metals react with non-metals?