Chemistry, 28.09.2020 14:01 DroctorWellsfan
3. Calculate the following. Give the answer in correct scientific notation and significant figures.
a) 3.95 x 102cm/1.5 x 106cm
b) (3.5 x 102)m (6.45 x 1010m2
c) 4.44 x 107 kg/2.25 x 105 ml
d) (4.50 x 10-2 cm) (3.67 x 10-12 cm)
Answers: 1
Chemistry, 22.06.2019 08:30
Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?
Answers: 1
Chemistry, 22.06.2019 09:30
Why do cells appear different in distilled water than they do in 10% salt water?
Answers: 2
Chemistry, 22.06.2019 17:30
The polymer used for the nonstick surface of cooking utensils is 24.0%c and 76%f by mass. what is the empirical formula of this polymer?
Answers: 2
Chemistry, 23.06.2019 01:30
Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.
Answers: 2
3. Calculate the following. Give the answer in correct scientific notation and significant figures....
Physics, 12.12.2020 16:50
Mathematics, 12.12.2020 16:50
Mathematics, 12.12.2020 16:50
Mathematics, 12.12.2020 16:50
Health, 12.12.2020 16:50
SAT, 12.12.2020 16:50
Mathematics, 12.12.2020 16:50
Social Studies, 12.12.2020 16:50