Then, we can just find the mass of 2.272 carbon atoms by multiplying 2.272 by the mass of 1 mole of carbon: 2.272 xx 12.01 = "27.29g" Since there was 1 significant figure in the question, our answer is …

Explanation: #M_ (CO_2) = "220 mg"# #MW_ (CO_2) = "44.01 g/mol"# #"O"_2 " molecules = ?"#

0.56 1 molar solution ="Number of moles of solute"/"Volume of solution" for Sugar C_ (12)H_ (22)O_ (11) molar mass=342gm according to equation and information provided 1= (3.42/342)/x where x is …

Oct 11, 2015 · 1545 subjects were given ginko & 1524 placebo. In ginko group, 246 developed dementian & in the placebo it was 277 with dementia. Significance level=0.01 to test claim (ginko is …

Please see the explanation below The equation is y=2x^2+2 Compare this equation to y=ax^2+bx+c The coefficient of x^2 is a=2 >0 So the curve is convex. Now, calculate the intercepts with the y-axis x=0, …

Using the isotopic masses and their relative abundance, the average atomic mass comes out to 24.3051 u . You work this out as a weighted average. Each isotope's mass is multiplied by its relative …

The pendulum reaches a displacement of 10mm in 0.0314 s after crossing the equilibrium point. The frequency is 5 Hz and the amplitude is 0.012 m. One function that could result in the described …

log (0.01^2/x^3) = -10.64 I assume that log means the logarithm with base 10. By the property log (a/b)=log (a)-log (b) we get: log (0.01^2) - log (x^3) = -10.64 log ...

The concentration of "Pb"^"2+" at equilibrium is 9.3 × 10^"-5"color (white) (l) "mol/L". > We can solve this by setting up an ICE table. color (white) (mmmmmm)"Pb (s ...

The molality of the "CaCl"_2 is 1.14 mol/kg. > "Molar mass of CaCl"_2·"2H"_2"O" = "110.98 g + 36.03 g" = "147.01 g" "Mass of CaCl"_2 = 7.02 color (red) (cancel ...