How many atoms are in 0.3500 mol of gold

Chemistry

1 answer:

Vikentia [17]3 years ago

3 0

8798076 atoms are in a 0.3500 mol of gold

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How can trace fossils provide info on how the organism lived

iragen [17]

Fossils provide a window in Earth's history by showing us how they existed in the past. They can be dated through several ways and can show us how animals and plants have evolved over millions of years. Also, fossils can help us better understand ancient disasters by the inclusion of elements (such as <span>volcanic ash or dust from major space object impacts) and how they affected the life on earth)</span>

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2 years ago

Match the following associations. 1. + ΔHexothermic endothermic 2. E2 < E¹exothermic endothermic 3. energy is absorbed exothe

Alisiya [41]

Explanation:

When heat is absorbed by reactants in a chemical reaction then the reaction is known as endothermic reaction.

Whereas when heat is released by reactants in a chemical reaction then the reaction is known as exothermic reaction.

1. When $\Delta H$ is positive then it means heat is absorbed by reactants and reaction is endothermic.

2. When $E_{2} < E_{1}$ , this means energy of products is less than the energy of reactants. Therefore, it is exothermic in nature.

3. When energy is absorbed then reaction is endothermic.

4. When $E_{2} > E_{1}$ , this means energy of products is greater than the energy of reactants. Therefore, it is endothermic in nature.

5. When [tex]\Delta H is negative then it means heat is released by reactants and reaction is exothermic.

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3 years ago

Write a chemical equation showing how this is an acid according to the Arrhenius definition. Express your answer as a balanced c

mylen [45]

Answer:

$HC_2H_3O_2_{(aq)}\rightarrow H^+_{(aq)}+C_2H_3O_2^-_{(aq)}$

Explanation:

Arrhenius theory:-

The Arrhenius theory was introduced introduced by Swedish scientist named Svante Arrhenius in 1887.

According to the theory, acids are the substances which dissociate in the aqueous medium to produce electrically charged atoms ( may be molecule). Out of these species furnished, one must be a proton or the hydrogen ion, $H^+$ .