Answers edited by Manish Bhardwaj
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How do you solve for a if #F=7 1/3# and #m=1/5# given Newton's second law states the #a=F/m# where a is the acceleration, F is the form, and m is the mass?
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How many grams of solid calcium hydroxide, Ca(OH)2, are required to react with 350 mL of 0.40 M HCl? __HCl + __Ca(OH)2 __CaCl2 + __H2O
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What is the concentration of lead ions and sulfide ions in a saturated solution of lead sulfide (#PbS#) solution at 25°C?
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Why the total mass of reactants and of product not change in a chemical reaction?
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How does solubility change with temperature for gases?
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How does mass number relate to the particles in the atom?
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What are some examples of ionic formulas?
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How do you calculate entropy change?
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What is a neutral atom?
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How can we identify dependent variables?
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If you have 21 moles of gas held at a pressure of 78 ATM and a temperature of 900 k, what is the volume of the gas?
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A gas occupies 11.2 liters at 0.860 atm. What is the pressure if the volume becomes 15.0 L?
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How can I write the formula for strontium fluoride?
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What is the correct formula of an ionic compound containing Fe-2 and PO4-3 and how is it called?
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How do you determine how far Doris can travel is Doris’s truck gets #10 \frac{2}{3}# miles per gallon and her tank has #5 \frac{1}{2}# gallons of gas?
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How would you calculate the molar mass of water?
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Question #23843
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What mass of carbon dioxide is produced from the complete combustion of #8.50*10^-3# #g# of methane?
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A sample of O2 under 2.00 atm occupies 500 ml at 25.0˚C. What pressure will the sample have at 0.0˚C ?
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How do you simplify #6 + (x - 5) + 7#?
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How do you calculate mole fractions?
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Question #b7af7
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Can someone explain how to do this?
Consider the following equation: 2ZnS(s) + 3O2(g) ---> 2ZnO(s) + 2SO2(g), ΔH° = –878.2 kJ.
What is the enthalpy change when 223.9 g ZnS(s) reacts in excess oxygen?
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Question #25589
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If the reaction of 20.7 grams of CaCO3 produces 6.81 grams of CaO, what is the percent yield?
CaCO3=>CaO+CO2
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How do you calculate mole fraction of solute?
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How many moles are present in 1.21 X 10^24 molecules of HBr?
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How do you simplify the expression #3x-x+4#?
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How do you solve for t in #2/7(t+2/3)=1/5(t-2/3)#?
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What is the mass of 5.99 mole of carbon monoxide?
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How can I write the formula for calcium nitride?
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What is the percent composition of a compound with the empirical formula #MgCl_2#?
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What is the formula for Magnesium Triiodine? I think it is Mg(I3)2 but wanting to confirm.
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What is x if #4x+3/x-9=5#?
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A 40.0 L tank of ammonia has a pressure of 8.00 atm. Calculate the volume of the ammonia if its pressure is changed to 12.0 atm while its temperature remains constant.
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How can the formation of a solution be exothermic or endothermic?
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What is stoichiometry?
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Question #e293b
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How do you evaluate the expression #((3x+x)/y)# when #x=4# and #y=2#?
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Question #1847d
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According to Avogadro's law, as the number of moles of gas increases, what happens to its volume?
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How can enthalpy change be determined for an aqueous solution?
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How many grams of Na2O are required to produce 1.60 x 102 grams of NaOH? Na2O + H2O ---> 2 NaOH
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What is the equation for finding the equilibrium constant for a chemical reaction?
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How do you multiply #2/7 \cdot -3.5#?
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Question #df3c0
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Question #52b92
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Question #162a7
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How does heat affect the phases of matter?
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How do you determine the length of each of the ribbons if Nadia takes a ribbon that is 48 inches long and cuts it in two pieces where one piece is three times as long as the other?
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How can I calculate the moles of a solute?
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If the half life of an unstable element is 5000 years, what percentage of the parent material will be left after 10000 Years?
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Why are endothermic reactions useful?
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Question #f4231
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Oxygen gas is at a temperature of 40°C when it occupies a volume of 2.3 liters. To what temperature should it be raised to occupy a volume of 6.5 liters?
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How do you find the quotient of #(4x^2 – y^2) ÷ (2x – y)#?
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How do you mulitply #2 1/3 xx 5 2/4#?
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Question #5bc49
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What is the total number of oxygen atoms on the left-hand side of #2Ca_2(PO_4)_2(s) + 4SiO_2(s) + 12C(s) -> 4CaSiO_3(s) + P_4(s) + 12CO(g)#?
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How many moles are in 45.0 sample of #MgO#?
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Question #e484d
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What are some examples of compounds?
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How do you simplify #(x + 4) - 2(x + 5)#?
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Question #ada60
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What is the product of #3/5xx5/12#?
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Can you find the number of moles of Argon in 607 grams of Argon?