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Pepsi [2]
3 years ago
6

PLEASE HELP ill be asking more questions for whoever wants to help THANK YOU:)

Chemistry
1 answer:
kupik [55]3 years ago
3 0

Each reaction has its own characteristics which can be determined from the reactants and products

<h3>Further explanation</h3>

Every chemical reaction involves a compound consisting of reactants and products

Reactants are compounds that react and form new compounds called products

There are several forms of reactions that can occur, including single replacement, double replacement, synthesis, decomposition, etc.

A. substances after the arrow are called 1 products

The product compounds in this reaction are: CO₂ + H₂O

B. which substances are the reactants : sodium + water

and The product compounds : sodium hydroxide + hydrogen gas

Reaction

2Na(s) + 2H₂O → 2NaOH(aq) + H₂(g)

C. Mg + Fe₂O₃ → Fe + 3 MgO is an example of single replacement :one element replaces the other elements of a compound to produce new elements and compounds

D. Ca(OH)₂ + Al₂(SO₄)₃ → CaSO₄ + Al(OH)₃  is an example of double replacement : there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product

E. PbSO₄->PbSO₃ + O₂ is an example of decomposition : One compound breaks down into 2 components

F.C₂H₄ + O₂ → CO₂ + H₂O is an example of combustion : when Oxygen combines with hydrocarbon

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What is the gram formula mass of Ca3(PO4)2
Georgia [21]
Mass Molar of Ca_{3} (PO_4)_2
Ca = 3*40 = 120 amu
P = 2*31= 62 amu
O = (16*4)*2 = 64*2 = 128 amu
--------------------------------------
Mass Molar of Ca_{3} (PO_4)_2 = 120 + 62 + 128 = 310 g/mol

Therefore: <span>What is the gram formula mass of Ca3(PO4)2 ?
</span>Answer: 310 grams
6 0
4 years ago
What is the standard reduction potential, E, for the half-reaction Al3+ (aq)
olchik [2.2K]

Answer:

E° = -1.66 V

Explanation:

The standard reduction potential is also known as the standard electrode potentials and it tries to find the probability that an element will be reduced or undergo reduction.

From activation series online showing the standard reduction potentials for half cells, the standard reduction potential of Al3+ (aq) + 3e- -> Al(s) is;

E° = -1.66 V

5 0
3 years ago
Describe the buffer capacity of the acetic acid buffer solution in relation to the addition of both concentrated and dilute acid
AysviL [449]

Answer:

The answer is in the explanation

Explanation:

Acetic acid, CH₃COOH, is a weak acid that will produce a buffer when its conjugate base, CH₃COO⁻, acetate ion, is added to the solution.

<em>That is because a buffer is the mixture of a weak acid and its conjugate base or vice versa.</em>

When an acid (HX) is added to the solution, the acetate ion will react producing acetic acid, thus:

CH₃COO⁻ + HX → CH₃COOH + X⁻

For this reason, the pH doesn't change abruptly because H⁺ ions are not produced.

Now, if a  base (BOH) is added to the buffer, CH₃COOH will react producing acetate ion and water, thus:

CH₃COOH + BOH → CH₃COO⁻ + H₂O + B⁺.

In the same way, there are not produced free OH⁻ and the pH doesn't change significantly.

5 0
4 years ago
Atomic radius of magnesium
nasty-shy [4]

the answer to you question is 173 pm

have a nice day

7 0
3 years ago
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2. The "2" in H2O means that there are 2 Hydrogen. The "2" in CO2 means that there are 2 Oxygen.
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