A sample of iron absorbs 67.5 j of heat upon which the temperature of the sample increases from 21.5 °c to 28.5 °c. if the specific heat of iron is 0.450 j/g-k, what is the mass (in grams) of the sample?

What s the difference of a mitochondria and a cloroplats

About 10-15% of all galaxies are which shape? A. spiral B. elliptical C. irregular

Rebekah finds that a solution of sugar in water has volume of 1.32 go oz how should she report this amount using the metric system (1 fl. oz. = 29.6mL)

Plasma often contains?

Suppose you wanted to stop eating fast food to cut down on excess fat and sodium. How might this benefit the environment as well?

If an atom has 8 valence electrons, how many electrons does it need to gain to achieve a stable electron configuration?

About how many miles on Earth are equal to one degree of latitude?

What are the allotropes of sulphur And phosphorus?

Particles are measured in

Marcus measured the masses and volumes of samples of four different substances, and he calculated their densities. The table shows Marcus's measured and calculated values. Substance Mass (g) Volume (cm3) Density (g/cm3) aluminum 5.7 2.1 2.