What is the number of moles in 15.0 g AsH3?
Answers
We are given with the mass of Arsine (
The mass of arsine is 15g
there is a relation between moles, mass and molar mass of any compound which is
The molar mass of Arsine = atomic mass of As + 3X atomic mass of H
the molar mass of Arsine = 74.92 + 3X 1 = 77.92 g/mol
Let us calculate the moles as
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What are the sum of all forces acting on the object called?
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Answer: Seafloor and tectonic plates.
Explanation: Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor
Answers
Mass of solution = mass of nacl + mass of water = 35.8 + 184 = 219.8 grams
Concentration = mass of Nacl x 100/mass of solution.
= 35x100/219.8 = 15.92%.
Hope this helps you.
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Evaporation: the process of turning from liquid into vapor
Deposition: the geological process in which sediments, soil and rocks are added to a landform or land mass
Dalton
B.
Rutherford
C.
Democritus
D.
Bohr
E.
Thomson
Answers
Answer:
The scientist is E. Thomson.
Explanation:
In the late nineteenth century, physicist J.J. Thomson started trying different things with cathode beam tubes. Cathode beam cylinders are fixed glass tubes from which the greater part of the air has been emptied. A high voltage is applied crosswise over two terminals toward one side of the cylinder, which makes a light emission stream from the cathode (the contrarily charged anode) to the anode (the emphatically charged cathode).
The cylinders are called cathode beam tubes on the grounds that the molecule bars or “cathode beam” begins at the cathode. The beam can be distinguished by painting a material known as phosphors onto the most distant finish of the cylinder past the anode. The phosphors sparkles, or produces light, when affected by the cathode beam.
tungsten
aluminum
bismuth
silicon
tellurium
Answers
Answer:
- Boron
- Silicon
- Tellurium
Explanation:
- Elements in the periodic table are either metals, non-metals or metalloids.
- Metals are elements that react by losing electron(s) to attain an octet configuration. They occupy groups I, II and III of the periodic table and the transition metals.
- Non-metals, on the other hand, are elements that react by gaining electron(s) to attain a stable configuration. Examples include halogens and noble gases among others.
- Metalloids are elements in the periodic table that have the properties of both metals and non-metals.
- Other examples of metalloids are arsenic, tellurium, germanium and polonium.
Answer:
Boron
Silicon
Tellurium
Explanation:
edgenuity
Answers
Sound can travel through water in the form of vibrations, and it can travel through the atmosphere, that is, the air, to reach our ears. It travels faster in gas(air).