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Slav-nsk [51]
3 years ago
15

How many valence electrons are in an atom of gold?

Chemistry
1 answer:
RUDIKE [14]3 years ago
3 0

<span>Chemical reactivity of all of the different elements in the periodic table depends on the number of electrons in that last, outermost level, called the valence level or valence shell. In the case of gold, there is only </span>one valence electron<span> in its valence level. Hope I helped! :)</span>
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See the picture to answer the question
amid [387]
Above is a potential energy curve of a reaction. It depicts conversion of reactant to product via transition state.

When a catalyst is added to the reaction system, energy barrier of reaction decreases.

It must be noted that energy barrier reaction is defined as energy difference between  reactant and transition state.

In present case, energy of reactant is 200 kj, while that of transition state (in absence of catalyst) is 650 kj

Thus, energy barrier of reaction is 650 - 200 = 450 kj

<span>Hence, system must absorb 450 kj of energy for the reaction to start, if no catalyst was used</span>

4 0
3 years ago
A car with a mass of 3,500lbs accelerates negatively from 35m/s to 8m/s in 8s. What is the
Salsk061 [2.6K]

Answer:

a=-3.37\ m/s^2

Explanation:

Given that,

A car accelerates negatively from 35m/s to 8m/s in 8s.

We need to find the car's acceleration.

Initial speed, u = 35 m/s

Final speed, v = 8 m/s

Time, t = 8 s

The acceleration of an object is equal to the rate of change of velocity. So,

a=\dfrac{v-u}{t}

Put all the values,

a=\dfrac{8-35}{8}\\\\a=-3.37\ m/s^2

So, the acceleration of the car is equal to -3.37\ m/s^2.

8 0
3 years ago
What can change depending on the number of protons in an atom?​
Rudiy27

Answer:

The element of the atom.

Explanation:

The number of protons confirms what element is the atom.

7 0
2 years ago
Read 2 more answers
The student is now told that the four solids, in no particular order, are calcium bromide (CaBr2), sugar (C6H12O6), butanoic aci
sladkih [1.3K]
<span>Help 
How did the First Great Awakening affect attitudes toward religion in the colonies during the early 1700s?</span>
5 0
3 years ago
What is the Name of RbC2H3O2
Semenov [28]

Answer:

Rubidium Acetate

Explanation:

Rb is Rubidium C2H3O2 is acetate

4 0
3 years ago
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