J. J. Thomson's experiments with cathode rays ended up _____.
Answers
Answer:
A. testing the theory of atoms.
Explanation:
J. J. Thomson is well known scientist for discovering the electron as a part of atom's structures, which changed the perception of this matter, and it was a significant event for physics.
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Describe two ways in which the evolution of organisms can have a harmful effect on humans
what is the molarity of a solution prepared by dissolving 1.25g of HCL gas into enough water to make 30cm cube of solution?
Equal amounts or ethanol and water are mixed at room temperature and at 101.3 kPa. Which process is used to separate ethanol from the mixture?(1) distillation (2) reduction (3) filtration (4) ionization
What is the number that you never write as a subscript?
Answers
Answer:it is not wet
Explanation: while many people believe it is, it is only our imagination of how our body think water would feel like.
Water is wet that is why you have to dry off after going swimming or after you wash your hands you have to dry them because they are wet. I don't understand how people think water is dry because water is a liquid and wet.
Sodium Chloride (NaCl)
B.
Vinegar (CH3COOH)
C.
Baking Soda (NaHCO3)
D.
Bleach (NaClO)
Answers
Sodium Chloride (NaCl) can be classified as a salt
Explanation:
Sodium chloride is an "ionic compound" is known as salt. The ratio in which the sodium(Na) and chloride(Cl) present in sodium chloride in NaCl is 1:1. It is found in seawater and is accountable for the salinity of the seawater. Also, NaCl is the extracellular fluid for various multicellular organisms.
When refined, it becomes in its 'edible' form and is used in food preservatives. Whereas, the large quantity of sodium chloride is used in various industries.
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The skeletal system of a human body is the only one that can get fossilized. The remains of ancient species are preserved as fossils. Body parts must typically be hard and able to be mineralized without losing their form or degrading in order to become fossilized.
What is fossil ?
Any surviving remnants, impression, or evidence of a once-living creature from a previous geological epoch is referred to as a fossil. Examples include fossilized bones, shells, exoskeletons, animal or microbe impressions in stone, amber-preserved artifacts, hair, petrified wood, oil, coal, and DNA traces.
In river valleys, cliffs, hillsides, and man-made exposures like quarries and road cuts, sedimentary rocks of the appropriate age are exposed, and these are the places where fossils are most frequently found.
The most typical kind of fossilization takes place quickly after an animal dies when it is buried under material, such sand or silt. Sedimentary deposits shield its bones from decaying.
Thus, The remains of ancient species are preserved as fossils.
To learn more about fossil, follow the link;
#SPJ2
Answers
Answer:
Rubidium Acetate
Explanation:
Rb is Rubidium C2H3O2 is acetate
Answer:
Rubidium Acetate-
Hope this helps ^-^* Sorry if I'm wrong.
Explanation:
Answers
Answers
Answer:
Mass = 76.176 g
Explanation:
Given data:
Mass of lead(II) chloride produced = 62.9 g
Mass of lead(II) nitrate used = ?
Solution:
Chemical equation:
Pb(NO₃)₂ + 2HCl → PbCl₂ + 2HNO₃
Number of moles of lead(II) chloride:
Number of moles = mass/molar mass
Number of moles = 62.9 g/ 278.1 g/mol
Number of moles = 0.23 mol
Now we will compare the moles of lead(II) chloride with Pb(NO₃)₂ from balance chemical equation:
PbCl₂ : Pb(NO₃)₂
1 : 1
0.23 : 0.23
Mass of Pb(NO₃)₂:
Mass = number of moles × molar mass
Mass = 0.23 mol × 331.2 g/mol
Mass = 76.176 g