Giovanni created this chart to study for an exam.

compound i uses

sodium hydroxide (naoh) plastic, soap, and paper production

iron oxide (feo) toothpastes and antacids

calcium chloride (cacl2) snow removal

calcium carbonate (caco3) dark pigment in makeup

which best describes how to correct the error in the chart?

a) remove “plastics” from the uses for sodium hydroxide.
b) swap the uses for iron oxide and calcium carbonate.
c) change the use for calcium chloride to “used in preservatives.”
d) add “de-ice roads” to uses for calcium carbonate.

Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used “x” grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap

Draw metallic bonding if two copper

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: