Which of the following groups of elements are in the main group?

A. Alkali metals
B. Halogens
C. Nonmetals
D. Transition elements

What type of light does this light bulb produce most (i. e. at what wavelength does the spectrum have maximum intensity)?

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

Which accounts for an increase in the temperature of a gas that is kept a constant volume