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3 years ago

20 points to anybody that can answer all 3 of these questions

Chemistry

2 answers:

Brilliant_brown [7]3 years ago

3 0

Answer:

1. 2AgO2 --> 4 Ag + O2

2. Decomposition

3. 2NaBr + CaF2 --> 2NaF + CaBr2

Explanation:

hammer [34]3 years ago

3 0

I believe the answers are the following:
1. C
2. B
3. B

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The electron configuration of an atom in the ground state is

Naya [18.7K]

Answer: the arrangement of electrons around the nucleus of an atom with lower energy levels.

Explanation:

5 0

3 years ago

The equilibrium constant, K., for the following reaction is 83.3 at 500 K. PC13(g) + Cl2(g) = PC13(E) Calculate the equilibrium

lord [1]

Answer:

The equilibrium concentration of $PCl_5=0.228 M$ .

The equilibrium concentration of $PCl_3=0.280 M -0.228 M=0.052M$ .

The equilibrium concentration of $Cl_2=0.280 M -0.228 M=0.052M$ .

Explanation:

Answer:

The equilibrium concentration of HCl is 0.01707 M.

Explanation:

Equilibrium constant of the reaction = $K_c=83.3$

Moles of $PCl_3 = 0.280 mol$

Concentration of $[PCl_3]=\frac{0.280 mol}{1.00 L}=0.280 M$

Moles of $Cl_ = 0.280 mol$

Concentration of $[Cl_2]=\frac{0.280 mol}{1.00 L}=0.280M$

$PCl_3(g)+Cl_2(g)\rightleftharpoons PCl_5(g)$

Initial: 0.280 0.280 0

At eq'm: (0.280-x) (0.280-x) x

We are given:

$[PCl_3]_{eq}=(0.280-x)$

$[Cl_2]_{eq}=(0.280-x)$

$[PCl_5]_{eq}=x$

Calculating for 'x'. we get:

The expression of $K_{c}$ for above reaction follows:

$K_c=\frac{[PCl_5]}{[PCl_3][Cl_2]}$

Putting values in above equation, we get:

$83.3=\frac{x}{(0.280-x)\times (0.280-x)}$

On solving this quadratic equation we get:

x = 0.228, 0.344

0.228 M < 0.280 M< 0.344 M

x = 0.228 M

The equilibrium concentration of $PCl_5=0.228 M$ .

The equilibrium concentration of $PCl_3=0.280 M -0.228 M=0.052M$ .

The equilibrium concentration of $Cl_2=0.280 M -0.228 M=0.052M$ .

4 0

3 years ago

If 1.00L of muriatic acid w/ a pH of 2.5 is poured to 8.00L water, what is the new molar concentration of the muriatic solution?

Daniel [21]

Answer:

The answer to your question is: C2 = 0.0004 M

Explanation:

Data

pH = 2.5; V = 1.0 L

V2 = 8.0 L C2 = ?

Formula

C1V1 = C2V2

C2 = C1V1 / V2

pH = -log[H⁺]

Process

[H⁺] = antilog -pH

[H⁺] = antilog (-2.5)

[H⁺] = 0.003 M = C1

Finally

(0.003)(1 l) = C2(8)

C2 = 0.003 / 8

C2 = 0.0004 M

8 0

3 years ago

3. A sample of carbon atoms were chemically combined with a sample of oxygen atoms to yield the

NISA [10]

Your mom is the answer

Explanation: moms tend to be the only formula to wake you up for school when no one can
1. Gives you a heart attack
2. Cusses at you
3. You wake up

5 0

3 years ago

As the temperature is increased, the rate of a chemical reaction usually

katrin2010 [14]

Increases as well. More heat means more energy is being supplied.

4 0

3 years ago