1 34.
A 3.00-mol/L sodium phosphate solution, NaPO (aq), is used to make
250 mL of 0.50-mol/L sodium phosphate solution. It is determined
that 42 mL of the concentrated solution is needed for the dilution.
Steps that may be used to make the solution are as follows:
1. Insert a stopper into the volumetric flask.
2. Add distilled water to the volumetric flask until the 250-mL level is
reached.
3. Add 42 mL of the sodium phosphate solution to 500 mL of
distilled water.
4. Transfer 42 mL of the 3.00-mol/L solution into a 250-ml
volumetric flask.
5. Heat the solid sodium phosphate to change it into a liquid.
6. Invert the volumetric flask to mix the contents.
Which steps, in the proper order, are required to produce the
0.50-mol/L sodium phosphate solution?
A. 3, 5, 2,6
B. 4, 2, 1,6
C. 2, 3, 4, 6,5
D. 5, 2, 4, 1,6
ahloride

For a family dinner, jose’s mom baked a loaf of bread. during the meal, his grandmother commented, “this bread is so dense! ” what do you think his grandmother meant by the word dense? you have some ideas regarding density already, but this experiment will enrich your understanding of the relationship between mass, volume and the density of objects. when making measurements in this experiment we will be using si units, the international system of units. the purpose of using si units is to have the ability to communicate and compare data results with other experiments without having to make conversions. measurement symbol si unit length m meter mass kg kilogram volume l liters density kg/l kilograms per liter any calculations that are performed during this experiment will ultimately be reported in scientific notation. recall that scientific notation is extremely important when we have data that is extremely small or large. scientists rely on a standard form of communication to quickly make hypotheses and judgements based on data. what is the density of block a? a0kg/l what is the density of block b? a1kg/l what is the density of block c? a2kg/l what is the density of block d? a3kg/l what is the density of block e? a4kg/l which block is the densest? a5