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1. What scientific principle or law is used in the process of balancing chemical equations?2. In balancing equations, why should you not change subscripts in chemical formulas?3. Define the terms limiting reactant and excess reactant.4. Why are the amounts of products formed in a reaction determined only by the amount of the limiting reactant?5. Why should you base your choice of what compound is the limiting reactant on its number of initial moles, not on its initial mass in grams?6. Explain why the general trend exists for elements getting smaller as you move across a period on the periodic table.7. Explain the importance of the VSEPR Theory.
Lead has a face-centered cubic lattice with all atoms at the lattice points and a unit-cell edge length of 495.0pm its atomic mass is 207.2 amu what is the density of lead?
Determine How many moles of Fe 3 O 4 could be formed if 9.00 mol iron react with 12.00 mol Oxygen and determine How many grams of methane is required to form 45.5g CHcl 3 ?
Compute w when 181 grams of iron (III) oxide (MM = 159.7 g/mol) combines with excess carbon(C)) to produce carbon dioxide(CO 2 ) gas at 359 K: express your answer in kilo joules
Determine how many pills does the female require to take each time she wants the dosage of 375miliigrams?
what do you think Does it mean that their properties also differ from a classical model of matter?
A 0.5485 g solid mixture have only ferrous chloride hexahydrate and ferrous ammonium sulfate hexahydrate. dissolved in 1M sulphuric acid get oxidized to Fe3+ with hydrogen peroxide, and get precipitated with cupferron.
What is the concentration of the H 2 SO 4 if a chemist titrates 300.0 mL of Sodium Hydroxide NaOH with a 5.0 M solution of NaOH and needs only 3.4 mL of the base to reach the endpoint,?
Determine how much concentrated solution can you take to form 1.15 Litres of 0.105M Nitric acid by mixing with H 2 O?
Estimate the average rate of production (Using this rate) of oxygen over the same time period. Considering the given equation 2H 2 O 2 --> 2H 2 O+O 2 -H 2 O 2
Compute the solubility of CO 2 in H 2 O at 25 oC in moles/L if the partial pressure of CO 2 in the headspace water sample is 1.56 atm.
Find the mass of a reactant using Dalton's law of partial pressures, ideal gas law, and stoichiometry - Determine the amount of zinc metal in grams consumed in the reaction.(Vapor pressure of water at 25 o C-23.8mmHg)
The total molarity of acid and conjugate base = 0.100M. A boy adds 4.20 milliliters of a 0.370 M solution to the beaker. Determine how much will the pH change?
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