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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
- James and Kathryn together had $190 in a savings bank. The . . . - Socratic
James and Kathryn together had $190 in a savings bank The amount in James's account was $30 more than 3 times the amount in Katherine's account How much had each? Algebra
- 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
- 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 #?
- Find the exact soultions on the interval from (-90degrees . . . - Socratic
Find the exact soultions on the interval from (-90degrees, 720degrees) cos3x=-sqrt3 2?
- 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 #da1ce - Socratic
#190 * color (blue) (T_"f") - 3800 = -1470 * color (blue) (T_"f") + 117600# #1660 * color (blue) (T_"f") = 121400 implies color (blue) (T_"f") = 121400 1660 = 73 13^@"C"# Now, you should round this off to one sig fig, the number of sig figs you have for the mass of milk, but I'll leave it rounded off to two sig figs #T_"f" = color (green) (73
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