In a calorimeter, 6.68 kJ of heat was absorbed by 20 g of ice. What is the enthalpy of fusion of the ice? q=m∆ahf

Convert 2.57 x 10 10 atoms of Cr to moles

Is the lens the only structure in the eye that focuses light.

What isotope is used for a standard for other atomic masses?

What does the law of gravitaton apply to?

The nutrition label on a bottle of cola reports that a 8.0 fl oz serving contains 25 g of sugar. How many kilograms of sugar are in a 2.0 L bottle of cola? Use the conversion 1 L = 33.8 fl oz.

The heart is an example of which level of organization within an organism? O cell organ tissue organ system O O

NaOH+HCl--> NaCl+H2O what is the total number of grams of H2O produced when 116 grams of the product, NaCl, is formed?

Is a sample of liquid nitrogen more dense than a sample of nitrogen gas

You have a balloon containing 1 L of air at STP in a vacuum chamber. What will the volume of the balloon be when you reduce the pressure by half and increase the temperature to 373 K?

Which method will correctly determine whether the forces on an object are balanced or unbalanced? A. Multiply the forces in the horizontal direction by the forces in the vertical direction. B.