Significant Figures
In a measurement, significant figures consist of the digits definitely known + one estimated digit.
In the example above, measurement A is definitely beyond the 7cm mark and the 0.8cm mark. By looking
carefully, we can estimate that the measurement is halfway between 7.8cm and 7.9cm, so the final
measurement is 7.85cm. This measurement has three significant digits.
How would you record measurement B with three significant digits?
Answers: 3
Chemistry, 22.06.2019 22:30
What relationship exists between an enzyme and a catalyst?
Answers: 1
Chemistry, 23.06.2019 05:00
C=59(fβ32)the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true? a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of 59 degree celsius.a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.a temperature increase of 59 degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.a) i onlyb) ii onlyc) iii onlyd) i and ii only
Answers: 1
Chemistry, 23.06.2019 05:30
The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table? atom p has an estimated zeff of 7 and is therefore to the left of atom q, which has a zeff of 6. atom p has an estimated zeff of 7 and is therefore to the right of atom q, which has a zeff of 6. atom p has an estimated zeff of 5 and is therefore below atom q, which has a zeff of 4. atom p has an estimated zeff of 5 and is therefore above atom q, which has a zeff of 4.
Answers: 3
Chemistry, 23.06.2019 10:00
You dissolve 8.65 grams of lead(l) nitrate in water and then you add 2 50 grams of aluminum. this reaction occurs 2ai(s)+ 3pb(no3)2(aq) -3pb(s)+ 2aino3la(aq) the theoretical yield of solid lead?
Answers: 1
Significant Figures
In a measurement, significant figures consist of the digits definitely known +...
Mathematics, 13.07.2019 08:10
Mathematics, 13.07.2019 08:10
English, 13.07.2019 08:10
History, 13.07.2019 08:10
Mathematics, 13.07.2019 08:10
History, 13.07.2019 08:10
English, 13.07.2019 08:10
English, 13.07.2019 08:10
Mathematics, 13.07.2019 08:10