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  • Question #e395e - Socratic
    When decaying by alpha emission a nucleus drops by 4 in mass number and 2 in atomic number and emits a helium nucleus (alpha particle) which has mass number 4 and atomic number 2 194 81 T l → 190 79 Au + 4 2α Notice that the total mass number, and total charge (here only indicated by the atomic numbers ) remains unchanged, just moved around If the question meant another isotope, just
  • Some very hot rocks have a temperature of 190 ^o C and a . . . - Socratic
    Some very hot rocks have a temperature of #190 ^o C# and a specific heat of #90 J (Kg*K)# The rocks are bathed in #270 L# of boiling water If the heat of the rocks completely vaporizes the water, what is the minimum combined mass of the rocks? PhysicsHeatLatent Heat
  • What are the mean and standard deviation of a binomial probability . . .
    What are the mean and standard deviation of a binomial probability distribution with #n=190 # and #p=7 11 #?
  • How do you simplify t^ { \\frac { 13} { 5} } \\cdot t ^ { \\frac { 11 . . .
    t^ (38 7) t^ (15 5)*t^ (11 7) =>t^ (15 5+11 7) =>t^ (135 35+55 35) =>t^ (190 35) =>t^ (38 7)
  • Question #9c6af - Socratic
    "3 2 mol kg"^(-1) In order to be able to calculate the molality of the solution, you need to know the number of moles of solute present for every "1 kg" = 10^3 "g" of solvent In your case, you know that this solution is "16% m m" urea, which implies that you get "16 g" of urea, the solute, for every "100 g" of solution If you take a "100-g" sample of this solution, you can say that it
  • How do you solve #v=sqrt (a^2)-x^2# for #x#? - Socratic
    x=+-sqrt(a-v) v=sqrt(a^2)-x^2 Apply square root rule sqrt(b^2)=b v=a-x^2 Add x^2 to both sides v+x^2=a Subtract v from both sides x^2=a-v Take the square root of both sides sqrt(x^2)=+-sqrt(a-v) x=+-sqrt(a-v)
  • Site Map - Using Decimals in Math Questions and Videos | Socratic
    How many girls were there to begin with? If evan has 10 dimes and quarters in his pocket, and they have combined value of 190 cents, how many of each coin does he have? Using long division, write the rational number -9 24 as a terminating decimal? How do you write the the decimal 8 823 in expanded form? What is #1 8 9# as a decimal?
  • Answers edited by Nallasivam V - Socratic
    Q A and Videos that make learning easy Math, History, Chemistry, Algebra, Calculus, Biology and more
  • Site Map - Dilution Calculations Questions and Videos | Socratic
    How would you prepare 250 mL of 0 158 M solution of #MgCl_2# from a 3 15 M stock solution? What is the concentration of a solution formed by diluting 190 mL of 18 M HCL solution to 730 mL?
  • Answers created by Deepak G. - Socratic
    Q A and Videos that make learning easy Math, History, Chemistry, Algebra, Calculus, Biology and more





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