Discovering Cells
1. True Cells are the basic unit of structure and function in living
things...
Chemistry, 25.03.2021 05:00, violetagamez2
Discovering Cells
1. True Cells are the basic unit of structure and function in living
things.
2. Telescopes are instruments that can magnify
very small objects.
3. Cells were first observed by Robert Hooke.
4. Light microscopes use beams of electrons to
produce magnified images.
5. Resolution is the condition when objects
appear larger than they really are.
6. Magnification is the ability to distinguish
details on an object.
7. If a compound microscope has a 10× lens in
its eyepiece and a 20× lens in its nosepiece, its total magnification is
100×.
8. cell
9. microscope
10. cell theory
Answers: 2
Chemistry, 22.06.2019 19:20, johnkings140
For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)
Answers: 1
Chemistry, 22.06.2019 20:00, jalenevoyles
Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.
Answers: 3
Chemistry, 22.06.2019 22:30, eduardoguizar8787
Which one of the following bonds would you expect to be the most polar? a) b–h b) n–h c) p–h d) al–h e) c–h
Answers: 1
Chemistry, 23.06.2019 04:30, Har13526574
Two liquids are poured into a beaker. after a few seconds, the beaker becomes warm. which of the following best describes this reaction? a. an exothermic reaction b. a decomposition reaction c. an endothermic reaction d. a single-displacement reaction
Answers: 1
Biology, 02.04.2020 06:45
English, 02.04.2020 06:45
Mathematics, 02.04.2020 06:45
Mathematics, 02.04.2020 06:45
Physics, 02.04.2020 06:45