For kryptonTt= -169 °C, Pt = 133 mm Hg, Tc = -63 °C, Pc = 54 atm, mp = -156.6 °C, bp = -152.3 °C. The density of solid krypton is 2.8 g/cm3, and the density of the liquid is 2.4 g/cm3.
What is the ph
If you have 2.00 mol hcl acid, how do you make a 1:20, 1:30 and 1:200 dilutes in a 250 ml volumetric flask-take 250/20 = 12.5 ml of HCl and 250-12.5 ml H2O
take 250/30 of HCl and 250 - 250/30 ml of w
my answer is 3.0*10^-9 from Ka=10^-(8.5)
is this correct? quickest answer thats right gets the best!-That is right, except I make it as 3.16*10^-9 (2 dp which is the same accuracy as given in the ques
If the solubility of Li2CO3= 0.15 moles/liter, what is its Ksp at this temperature?
so I know the equilibrium is Li2CO3 2Li + CO3 and based off of the equation for K it would be
K=[Li]^2[CO3]
so I t
Calculate the volume that will be occupied by 350.0 mL of oxygen, measured at 720.0 mm, when the pressure is changed to 630.0 mm.-This is a standard text book problem.
Assuming ideal gas behaviour
We
I really need help, can someone please assist?
I have a list of 10 chemistry problems which i really have tried to solve
and i have been working on them for days without success. i will lay them, out
Zinc metal can be obtained fro zinc oxide (ZnO) by reacting the oxide with the element carbon.The products of he reaction are Zn and CO2. What mass of zinc oxide is needed to react completely with 1.4
PbO(s) + CO(g)=Pb(l) + CO2(g)-Kc will always equal products / reactants. However, you never ever include products/reactants that are in pure solid or liquid form. Therefore, the Kc for this reaction i
PART 1)
One reaction that produces hydrogen gas can be represented by the unbalanced chemical equation
Mg(s) + HCl(aq) -----> MgCl2(aq) + H2 (g)
What mass of HCl is consumed by the reaction of 3.64 mo
Can someone show me the dot structure for C5H8? Thanks.-Ill try to draw it ^^ This is pentyne by the way (of the form CnH2n-2), normally you indicate where the triple bond is by putting a number in fr
which of the following do not aid in the identification of X2+ ( Pb2+ or AL3+)
a aqueous KI, b) dilute HCL , c) dilute HNO3 , d) dilute H2SO4-I think it is C.
In my experiment last week,
KI turned
I understand balancing an equation fairly well, but how does one balance an equation with only the left side available?
example:Li + O2 →
C5H12 + O2 →
Does this require more chemistry knowledge (wi
1. A dramatic classroom demonstration involves cooling a balloon from room temperature (300 K) to liquid nitrogen temperature (77 K).
A. If the initial volume of the balloon is 2.7 L, what will its v
What volume of 0.375M NaOH is required to titrate 30.0 mL of 0.125M H2SO4 to the equivalence point?
(a) 10.0 mL (b) 20.0 mL (c) 30.0 mL (d) 40.0 mL
answer is (b) 20.0 ml from answer key but I cant fi
Can someone please help me with my Chemistry homework?-It can identify the atom as to what element it is.Each element gives a unique light spectrum.Thats how spectroscopy works for identifying the ele
