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lyudmila [28]
3 years ago
10

Is a chemical released at a stressful time.

Chemistry
2 answers:
den301095 [7]3 years ago
6 0

Answer:

carbon dioxide

Explanation:

mr Goodwill [35]3 years ago
4 0

Answer:

Adrenaline

Explanation:

Adrenaline is a chemical released when you are in stress or, to coin it better, in "panic mode". It helps boost your stamina, and gears you towards flight in the fight v. flight response. However, when needed, you have that extra boost of stamina in case you do need to fight. Your blood pressure will rise, and your heart will beat faster, as well as you feeling your muscles tense up and body heating up.

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Which reaction occurs when equivalent quantities of H" (or H30) and OH" are mixed?
Lynna [10]

Answer: A reaction which occurs when equivalent quantities of H" (or H_{3}O^{+}) and OH" are mixed is a neutralization reaction.

Explanation:

When acid and base chemically combine together to form sat and water then it is know as neutralization reaction.

An acidic substance gives hydrogen ions (H^{+}) on dissociation and a basic substance gives hydroxide ions (OH^{-}) on dissociation.

For example, H^{+} + OH^{-} \rightarrow H_{2}O is a neutralization reaction where an acid and base are mixed together to form water.

No salt is formed as because here the reactants are not present as compounds.

In a hydrolysis reaction, water molecule(s) is added to the reactant molecules.

For example, CH_{3}COOCH_{3} + H_2O \rightarrow CH_{3}COOH + CH_{3}OH

Oxidation is the process of addition of oxygen to a molecule and removal of hydrogen.

Reduction is the process of addition of hydrogen in a compound and the removal of oxygen atom.

Therefore, we can conclude that reaction which occurs when equivalent quantities of H" (or H_{3}O^{+}) and OH" are mixed is a neutralization reaction.

4 0
3 years ago
What is the first step in creating a unit conversion factor?
NNADVOKAT [17]
Determining the units.
5 0
3 years ago
An aluminum ion has a charge of +3, and an oxide has a charge of -2. What would be the product of a reaction between these two e
kozerog [31]

The product of a reaction between these two elements is Al_{2} O_{3}.

Explanation:

The oxidation state of an ion in a compound is equal to its charge.

The aluminum having a charge of +3 because oxidation state is +3

The oxide is having charge of -2

The product of these reactants will produce a chemical compound.

The compound formed is Al_{2} O_{3}  i.e Aluminium oxide. The compound while getting formed will share the charge and cation A+ will have the charge of anion and anion will have the charge of cation. This will result in a compound as there should be a neutral charge on the compound formed.

The <em>+</em><em>3 charge of the cation Al+ will go to anion oxide O2- and the charge of anion -2 will go with cation Al+. </em>

<em />

8 0
3 years ago
You are assigned the task of separating a desired granular material, with a density of 3.26 g/cm3, from an undesired granular ma
Svetradugi [14.3K]

Answer:

diiodomethane

Explanation:

The densities of each of the liquids mentioned in the question are stated below;

CCl4- 1.59 g/cm^3

Hexane- 0.672 g/cm^3

Benzene- 0.8765 g/cm^3

Diiodomethane- 3.3 g/cm^3

Clearly, the density of diiodomethane methane is almost the same as that of the desired granular material, hence the undesired granular material having a density of 2.04 g/cm3 will float in diiodomethane thus separating the two granular materials.

5 0
3 years ago
When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction CaCO3(s)→CaO(s)+CO2(
Mazyrski [523]
Answer is: <span>mass of calcium carbonate needed is 120 grams.
</span>Chemical reaction: CaCO₃(s) → CaO(s) + CO₂(g)<span>.
</span>V(CO₂) = 27.0 L.
Vm = 22.4 L/mol.
n(CO₂) = V(CO₂) ÷ Vm.
n(CO₂) = 27 L ÷ 22.4 L/mol.
n(CO₂) = 1.2 mol.
From chemical reaction: n(CO₂) : n(CaCO₃) = 1 : 1.
m(CaCO₃) = 1.2 mol.
m(CaCO₃) = n(CaCO₃) · M(CaCO₃).
m(CaCO₃) = 1.2 mol · 100 g/mol.
m(CaCO₃) = 120 g.
3 0
4 years ago
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