2 years ago

What did J.J. Thomson discover about the atom that changed the atomic model previously used?

1 answer:

galina1969 [7]2 years ago

7 0

J.J. Thomson hypothesized and discovered that the atom was not the smallest unit of matter but that instead there were much smaller units. He discovered "sub-atomic particles" which make up atoms. The sub-atomic particle that Thomson discovered was the electron. He discovered this through a process of experiments testing cathode rays.

You might be interested in

Determine the balanced chemical equation for this reaction. C8H18(g)+O2(g)→CO2(g)+H2O(g)

ankoles [38]

Answer: balanced reaction equation

C8H18(g) + 25/2 O2(g) ---------> 8CO2(g) + 9H2O(l)

Explanation:

Part A- coefficients

1, 25/2,8,9

Part B

Oxygen is the limiting reactant

Part C

If 1 mole of octane produced 9 moles of water from the balanced reaction equation

0.28 moles of octane will produce 0.28×9= 2.52 moles of water

Part D

If 12.5 moles of oxygen reacts with 1 mole of octane

0.63 moles of oxygen will react with 0.63/12.5=0.0504moles of octane

Amount of octane left= 0.280-0.0504=0.2296 moles

4 0

2 years ago

If u have 10 moles of C2H2 how many mole of O2 would you need

padilas [110]

Answer:

i dont know04487448700

4 0

2 years ago

Copper metal (Cu) reacts with silver nitrate (AgNO3) in aqueous solution to form Ag and Cu(NO3)2. An excess of AgNO3 is present.

aev [14]

we are given the reaction Cu + 2AgNO3 ---> Cu(NO3)2 + 2Ag. This means for every mole Cu used, there are 2 moles of Ag produced. In this case, given 31.75 g Cu, converting to moles through molar mass and using stoichiometric ratio and the molar mass of Ag, the mass Ag produced is 107.9 grams.

8 0

2 years ago

Read 2 more answers

Help quick! Will mark brainlest!

Ivenika [448]

Answer: 10HSiCl3 + 15H2O → H10Si10O15 + 30HCl

Explanation:

6 0

2 years ago

42.7 L to mililiters

marin [14]

42700 milliliters would be the answer...

Hope this helps!

3 0

3 years ago