Tal Questions

What is the law of conservation of mass

Water does not appear in the equilibrium expression because it is a pure liquid. However, the addition of water to the equilibria in this lab can impact the equilibrium.

The amount of protein in a sample was measured by the sample's absorbance of light at a given wavelength. Using standards, a best fit line (calibration curve) of absorbance (y-axes) vs. mg protein (x-axes) gave a slope of 0.

If 1.00 mole of water is produced how many moles of hno3 are used

An average American family uses more than 300 gallons of water a day. How is most of that water used? A. to drink B. to cook C. to flush toilets D. to wash clothes

What is the mass in grams of 4.50*10^16 atoms potassium (K) ?

A scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. Does this result support the theory of plate tectonics? Why or why not?

Why is it incorrect to balance a chemical equation by changing the subscripts?

A solution of CuSO4 is labelled 0.01 M. How much CuSO4 in grams, must be used to make 1 liter of solution? A) 1.120 g B) 1.595 g C) 1.6 g D) 15.0 g

Rank the following elements according to their ionization energy: tin krypton antimony arsenic

Water (3030 g) is heated until it just begins to boil. If the water absorbs 5.49*105 J of heat in the process, what was the initial temperature of the water?