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2 years ago

What is the compound formula for Ba2 and NO3–?

2 answers:

3 0

That would be the compound Ba(NO3)2. The Barium ion has a charge of 2+ so there are 2 NO3- ions in the formula to produce a neutral compound.

oksian1 [2.3K]2 years ago

3 0

<u>Answer:</u> The chemical compound formed by the combination of given ions is $Ba(NO_3)_2$

<u>Explanation:</u>

Barium is the 56th element of periodic table having electronic configuration of $[Xe]6s^2$ .

To form $Ba^{2+}$ ion, this element will loose 2 electrons.

Nitrate ion is a polyatomic ion having chemical formula of $NO_3^{-}$

By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

So, the chemical compound formed by the combination of given ions is $Ba(NO_3)_2$

The formed compound is an ionic compound.

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Explanation:

what you have to do is to multiply the given grams with the ratio of grams of that certain element in it's full compound in order to isolate the compound and get the element.

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3 years ago

a factor of 8, it means that A is now only 1/8 of its original concentration. A first order reaction, where A → products, has a

Trava [24]

Answer:

It takes 1.32x10⁻⁷s for the concentration of A to fall by a factor of 8

Explanation:

The equation that represents a first-order kinetics is:

Ln ([A] / [A]₀] = -kt

<em>Where [A] is actual concentration, [A]₀ is initial concentration, K is rate constant (For the given problem, 1.57x10⁷s⁻¹ and t is time.</em>

<em />

As you want the time when you have [A] in a factor of 8 = [A] / [A]₀ = 1/8

Replacing:

Ln ([A] / [A]₀] = -kt

Ln (1/8) = -1.57x10⁷s⁻¹*t

t = 1.32x10⁻⁷s

<h3>It takes 1.32x10⁻⁷s for the concentration of A to fall by a factor of 8</h3>

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2 years ago

Does this equation support the law of conservation of mass?

Sophie [7]

this equation does support the law of conservation of mass.

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2 years ago

Whats is saturated solution? what happens as a saturated solution cools?

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3 years ago

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