Measure the width of a sheet of a standard-sized (8.5in x 11.0in) loose-leaf notebook paper. Make the measurement in centimeters and Express the answer with the correct number of significant figures.

width = 27.94 cm

Explanation:

Given  a sheet of a standard-sized (8.5in x 11.0in) loose-leaf notebook paper.

From the value given, the width is 11.0 inches

To make the measurement in centimeters, we will convert inches into centimeters.

1 inche = 2.54 centimeters

That is, 11 × 2.54 centimeters = 27.94 cm.

Therefore, the width is 27.94 cm.

i'm only doing this for the points : (

explanation:

i'm only doing this the points

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂