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Temka [501]
3 years ago
12

Write a hypothesis that answers the lesson

Chemistry
1 answer:
steposvetlana [31]3 years ago
7 0

Answer:

the reaction will come to a halt and the other reactant will still be present.

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Kia is doing an experiment in science lab. She is given a beaker containing 100 g of liquid. The beaker has markings on the side
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Kia's remaining water has a mass of 50g. You can set it up as a proportion knowing that 100ml of water has a mass of 100g and thus 50ml of water would weight 50g
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3 years ago
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In the compound cah2 calcium has an oxidation number of 2+ and hydrogen has an oxidation number of
sesenic [268]

The oxidation number of H is -1.

Sum of the oxidation numbers in each element = charge of the complex

CaH₂ has 1 Ca atom and 2H atoms. The charge of the complex is zero. Let’s say Oxidation number of H is "a".

Then,

<span>    (+2) + 2 x a = 0 </span>

<span>        +2  + 2a  = 0</span>

                  2a = -2

                    a = -1

Hence, the oxidation number of Hydrogen atom in CaH₂ is -1


7 0
3 years ago
For which elements are outer electrons and valence electrons the same?
spin [16.1K]

Answer:

The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms. This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.

Explanation:

4 0
3 years ago
What is the most common way an earthquake changes Earth's landforms? A
g100num [7]

<u>Answer</u>:

"The earthquake shakes the position of land" is the most common way an earthquake changes Earth's land forms

<u>Explanation</u>:

Most of the times earthquake has been found to be making drastic reforms over the surface. With respect to the movement of ground other surface effects includes variation in the flow of groundwater, landslides and also in the direction flow change of mudflow. It affects the buildings, bridges, pipelines and railways and other important structures. the ground movement takes place due to the movement of underground rocks which found to be breaking near the faults. This release energy that further leads to movement of the tectonic plates. The generation of seismic wave from the energy.  

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3 years ago
Describe how platelets function
VashaNatasha [74]

Answer:

Platelets are tiny blood cells that help your body form clots to stop bleeding.

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If one of your blood vessels gets damaged, it sends out signals to the platelets. The platelets then rush to the site of damage and form a plug (clot) to fix the damage.

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3 years ago
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