A chemist weighed out 101. g of iron. Calculate the number of moles of iron she weighed out. Be sure your answer ha...
A chemist weighed out 101. g of iron. Calculate the number of moles of iron she weighed out. Be sure your answer has the correct number of significant digits. mol x 5 ?
A chemist weighed out 4.7 g of beryllium. Calculate the number of moles of beryllium she weighed out. Be sure your answer has the correct number of significant digits. mol X | ?
Calculating and using the molar mass of elements A chemist weighed out 101. g of gold. Calculate the number of moles of gold she weighed out. Be sure your answer has the correct number of significant digits. mol 00
A chemist weighed out 77.0 g of potassium. Calculate the number of moles of potassium she weighed out. Round your answer to 3 significant digits. mol alo Ar
A chemist prepares a solution of iron(III) bromide FeBr3 by measuring out 57.3g of iron(III) bromide into a 50.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's iron(III) bromide solution. Be sure your answer has the correct number of significant digits.
A chemist prepares a solution of iron(II) chlorlde (FeCl,) by measuring out 0.45 g of FeCl, into a 50. mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of CI anions in the chemist's solution. Be sure your answer is rounded to the correct number of significant digits. mol L ? X Check Explanation 9 o 8-940ud You The
100% B, us. Mone Message trom the NY State Department of Labor Initial Knowledge Check Question 12 A chemist weighed out 49.8 g of silver. Calculate the number of moles of silver she weighed out. Be sure your answer has the correct number of significant digits pri mol I Don't Know Submit
An analytical chemist weighs out 0.144 g of an unknown monoprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.0900 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 22.2 mL of NaOH solution. Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. mol x 6 ?
A chemist prepares a solution of iron(II) chloride (FeCl2) by measuring out 0.45 g of FeCl, into a 50 mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Clanions in the chemist's solution Be sure your answer is rounded to the correct number of significant digits. xs ? Explanation Check 20%- old
A chemist determined by measurements that 0.0800 moles of potassium participated in a chemical reaction. Calculate the mass of potassium that participated in the chemical reaction. Be sure your answer has the correct number of significant digits. 070 x 5 ?