The balanced chemical equation between calcium carbonate and hydrochloric acid:
Moles of =
Moles of HCl=
The mole ratio of
But we have per 0.03125 mol HCl
Hence, HCl is the limiting reactant. The amount of product formed would depend on moles of HCl.
Mass of =0.03125mol HCl *
Answer:
26.3 moles of O₂ are needed to react completely with 35.0 mol of FeCl₃
Explanation:
To determine the number of moles of O₂ that are needed to react completely with 35.0 mol of FeCl₃, it is possible to use the reaction stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), and rule of three as follows: if 4 moles of FeCl₃ react with 3 moles of O₂, 35 moles of FeCl₃ with how many moles of O₂ will it react?
moles of O₂= 26.25 ≅ 26.3
<u><em>26.3 moles of O₂ are needed to react completely with 35.0 mol of FeCl₃</em></u>
8.908 G/cm^3 is the density of a nickel
Answer:
<u>7.022</u>
Explanation:
2.589x10^6/
3.687x10^5
<u>1. </u> 2.589/3.687 = 0.702197 <em><u> [Separate out and divide just the decimal portion first]</u></em>
<u>2.</u> 10^6/10^5 = 10^(6-5) = 10^1 <em><u>[Divide the exponent portion next]</u></em> When dividing, subtract the denominator exponent from the numerator exponent: (6-5) = 1. The exponent is 1.
0.702197x10^1 <em><u>[Put the two pieces together: 1. and 2.]</u></em>
7.02197 <em><u> [Move the decimal point once to the right, which will reduce 10^1 to 10^0, or 1]</u></em>
<h2><u>
7.02197 or 7.022 to 4 sig figs</u></h2>
<em><u></u></em>