Answer:
b.a convex lens forms a smaller,real image.
The correct answer for the question that is being presented above is this one: "A. The accepted model of the atom was changed.<span>" </span>J J Thomson discovered the electrons and performed experiment using the cathode ray tube
Here are the following choices:
<span>A. The accepted model of the atom was changed.
B. The accepted model of the atom was supported.
C. Cathode ray tubes were no longer used in experiments due to poor results.
D. Cathode ray tubes became the only instrument of use in the study of atoms</span>
<u>Answer:</u> The net chemical equation is given below.
<u>Explanation:</u>
To determine the net chemical equation, we will look into the intermediate steps:
<u>Step 1:</u> Formation of ammonia from hydrogen and nitrogen gas.
......(1)
<u>Step 2:</u> Formation of nitric acid from ammonia and oxygen gas.
.....(2)
The net chemical equation for the formation of nitric acid from hydrogen gas, nitrogen gas and oxygen gas follows by adding both the equations, we get:
![N_2(g)+2O_2(g)+3H_2(g)\rightarrow HNO_3(g)+H_2O(g)+NH_3(g)](https://tex.z-dn.net/?f=N_2%28g%29%2B2O_2%28g%29%2B3H_2%28g%29%5Crightarrow%20HNO_3%28g%29%2BH_2O%28g%29%2BNH_3%28g%29)
By Stoichiometry of the reaction:
1 mole of hydrogen gas reacts with 2 moles of oxygen gas and 3 moles of hydrogen gas to produce 1 mole of nitric acid, 1 mole of water and 1 mole of ammonia.
Hence, the net chemical equation is given below.
<span>a. Nitrogen
b. Neon
</span><span>
Remember ionization increases from bottom to top (Fr to H) and from left to right (H to He) </span>
Answer:
Atoms
Explanation:
The molecular formula uses chemical symbols to indicate the types of atoms followed by subscripts to show the number of atoms of each type in the molecule. :)