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kiruha [24]
2 years ago
8

Please help me with 19-22 on my study guide

Chemistry
1 answer:
krek1111 [17]2 years ago
4 0
Here's a chart that will help you color in the periodic table for #20:

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Hey everyone!! Can someone please explain the periodic table of elements and whoever wants to talk I can talk to!!
Burka [1]

Answer:

The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. ... For instance, all the group 18 elements are inert gases.

Explanation:

3 0
3 years ago
An isotope of cesium has 55 protons and 78 neutrons. What is the mass number of this isotope?
mixer [17]

The only stable caesium isotope is 133Cs, with 78 neutrons.

Hope this answers your Q

4 0
3 years ago
Whats the correct answer ???
pogonyaev
Which question did you want me to answer
4 0
3 years ago
The production of ammonia (NH3) is exothermic and is in equilibrium with its breakdown (which is endothermic):
olya-2409 [2.1K]

Answer:

The equilibrium will shift to produce less ammonia

Explanation:

According to Le Chatelier's principle, the reaction will try to oppose anything that is done on it, if it was at equilibrium.

When the concentration of H2 is decreased, you are decreasing the concentration of hydrogen so the reaction tries to increase the concentration of hydrogen by breaking down the ammonia on the products side. This will decrease the output of ammonia

8 0
3 years ago
H2SO4 + Ca(OH)2 --&gt; CaSO4 +<br> H20<br> Balancing?
slavikrds [6]

Answer:

This is an acid-base reaction (neutralization): H 2SO 4 is an acid, Ca(OH) 2 is a base.

...

1 H2SO4 + Ca(OH)2 → H2O + CaSO4

2 H2SO4 + Ca(OH)2 → CaSO4 + HOH

3 H2SO4 + Ca(OH)2 → H2O + CaOH2SO4

4 H2SO4 + Ca(OH)2 → H2O + Ca(HSO4)2

5 H2SO4 + Ca(OH)2 → H2O + (CaOH)2SO4

Explanation:

4 0
2 years ago
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