Chemistry, 14.09.2019 00:30 salsaanddoritos899
Which statement best describes a physical change?
a. changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the same.
b. changes can occur to certain physical properties of the substance, but the overall shape of the substance will remain the same.
c. changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.
d. changes can occur to chemical properties of a substance, but the chemical composition of the substance remains the same.
Answers: 1
Chemistry, 22.06.2019 05:40
Calculate: select the worksheet tab. this tab you calculate the analyte concentration. ï‚· fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.) ï‚· record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes. ï‚· record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed
Answers: 2
Chemistry, 22.06.2019 14:00
The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.
Answers: 3
Chemistry, 22.06.2019 19:00
Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.
Answers: 2
Which statement best describes a physical change?
a. changes can occur to certain chemical pr...
a. changes can occur to certain chemical pr...
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