Chemists routinely perform calculations of the amount of substances necessary to carry out a chemical reaction. Textbooks refer to this topic as "stoichiometry." Chemists base all stoichiometric calculations on
Understand the definition of mole ratio, how to find mole ratio in stoichiometry, and see examples of using mole ratio in problems. Related to this QuestionIf tums is added to 30.0 mL of 0.400 M HCl solution, how ...
Louis Bolk suggested that all mammals have the ability to express the traits we call atavisms, but humans just don't. This wouldn't make atavisms evolutionary throwbacks, just a genetic fluke. What is an Atavism? Four-year-old Jiaxue, of China, was born with hairy black moles covering ...
The reaction is now Mg(OH)2 + 2HCl –> MgCl2 + 2H2O. 2. Find Molecular Weight Convert reactant quantities to moles. Use a periodic table to find the atomic mass units for each element. For example, say you have a solution of 65 grams of magnesium hydroxide and 57 grams of ...
Converting Grams to Moles | Formula, Calculation & Examples from Chapter 4 / Lesson 8 422K Learn how to convert grams to moles and moles to grams, including the formula to convert grams to moles. See examples of how to find moles from grams. Related...
An enzyme is a protein that speeds up a particular chemical reaction. For example, one of the 1,000 enzymes in an E. coli's DNA might know how to break a maltose molecule (a simple sugar) into its two glucose molecules. That is all that that particular enzyme can do, but that actio...
The ability of a restriction enzyme to find a single site by linear diffusion in the supercoiled plasmid is also presumed to be different than for any of the sites on a linear substrate. Although it is not common, some enzymes exhibit differences in their ability to cut supercoiled DNA ...
How does mass change during a chemical reaction? Building Blocks Of Matter: All matter is made up of tiny building blocks called atoms. Atoms are bonded together to form molecules and compounds, which make up everything that exists in the universe. The amount of matter in a substance is dir...
If the mass of nail used was 1.45g, calculate the number of moles of Fe2+ produced in the reaction. Quote My solution was 1.45 / 56 = 0.03 mol since 1 mol of Fe require 1 mol of H2SO4 to produce 1 mol of FeSO4. Why is this not accepted? Thanks. IMHO this is a correct approa...
Learning how to calculate molarity isn't difficult; the key is to remember the units of molarity (M): moles per liter. Find the molarity by calculating the number of moles of the solute dissolved in liters of a solution. Molarity is a unit of concentration, measuring the number of moles...