A0.450 g sample of impure caco 3 ( s ) is dissolved in 50.0 ml of 0.150 m hcl ( aq ) . the equation for the reaction is caco 3 ( s ) + 2 hcl ( aq ) ⟶ cacl 2 ( aq ) + h 2 o ( l ) + co 2 ( g ) the excess hcl ( aq ) is titrated by 6.45 ml of 0.125 m naoh ( aq ) . calculate the mass percentage of caco 3 ( s ) in the sample.

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

What is the molarity of 60.0 grams of naoh dissolved in 750 milliliters of water? a) 1.1 m b) 2.0 m c) 12 m d) 75 m