Question

u
molar
1.78 8 oral
evolved at STP. A sample U
protein is
(A) 36,500 g mol-'
10g of a mixture of Bao an
(C) 35.
of 2.5 M
20 g mol-'
(B) 34,500 g mol"
mixture of BaO and CaO requires 100 cm
-1 (C) 35,400 g mol
55,600 gm
cm of 2.5 M HCl to react completely. The
approximately (Given: molar mass of Bao=153)
(C) 44.9
(D) 47.4
tely neutralized 0.064 g of sodium hydroxide. Molarity of
calcium oxide in the mixture is approxin
(B) 55.1
(A) 52.6
25 cm' of oxalic acid completely neutralize
olution is
1) 0.064
(B) 0.045
(C) 0.015
D0.032
e A are mixed with 200 mL of 0.2 M solution of
L of 0.1 M solution of salute A are mixed with 200 mL
d to 500 mL. If A and B are non-interacting substances, the molalit
ution diluted to 500 mL. If
be
7.10 M
(B) 0.15 M
(C) 0.20 M
(D) 0.2
of a solution obtained by mixing 750 mL of 0.5 M HCl with 25
(B) 1.75 M
(C) 0.975 M
(D)
-weight, a sample of H2SO4 has density 1.96 g/cm'. The molarity and po
OM​

Answer 1

As a good rational approximation for the square root of two, with a reasonably small denominator, the fraction 99/70 (≈ 1.4142857) is sometimes used.

The sequence A002193 in the OEIS consists of the digits in the decimal expansion of the square root of 2, here truncated to 65 decimal places: