"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 …

Feb 11, 2016 · 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. …

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 …

What are the mean and standard deviation of a binomial probability distribution with #n=190 # and #p=7/11 #?

Oct 14, 2017 · 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)

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 …

Approx. 190*g... By definition, rho, is given by the quotient.... rho_"density"="mass"/"volume", and thus has units of g*mL^-1-=g*cm^-3... And so we simply rearrange ...

Dec 6, 2015 · Here the minus sign is used because heat lost carries a negative sign.

Mar 28, 2016 · Explanation: Given point #-> (x,y)-> (-3,10)# Given gradient #" " (m) =-2# Thus #y=mx+c" "# becomes #" " y=-2x+c# '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #color (blue ...

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 …