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6 days ago

Element X reacts with element Y to give a product containing X3+ ions and Y2− ions.

Chemistry

1 answer:

KiRa [2.8K]6 days ago

5 0

Answer:

X₂Y₃

Explanation:

X⇒X³⁺ + 3e⁻ /×2

Y + 2e⁻ ⇒ Y²⁻ /×3

2X⇒2X³⁺ 6e⁻

3Y + 6e⁻⇒ 3Y²⁻

2X + 3Y ⇒2X³⁺ + 3Y²⁻ ⇒ X₂Y₃

To balance the electrons, we can shorten the equations from both sides. The next step is to combine these two half-processes. Element Y captures two electrons from element X, resulting in X becoming positively charged while Y acquires a negative charge. This suggests that element Y likely possesses a higher electronegativity.

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The reaction between nitrogen dioxide and carbon monoxide is NO2(g)+CO(g)→NO(g)+CO2(g)NO2(g)+CO(g)→NO(g)+CO2(g) The rate constan

eduard [2645]

Response: The rate constant at 525 K is, $0.0606M^{-1}s^{-1}$

Rationale:

Based on the Arrhenius equation,

$K=A\times e^{\frac{-Ea}{RT}}$

or,

$\log (\frac{K_2}{K_1})=\frac{Ea}{2.303\times R}[\frac{1}{T_1}-\frac{1}{T_2}]$

where,

$K_1$ = rate constant when $701K$ = $2.57M^{-1}s^{-1}$

$K_2$ = rate constant when $525K$ =?

$Ea$ = activation energy for the process = $1.5\times 10^2kJ/mol=1.5\times 10^5J/mol$

R = gas constant = 8.314 J/mole.K

$T_1$ = initial temperature = 701 K

$T_2$ = final temperature = 525 K

Substituting the provided values into this formula yields:

$\log (\frac{K_2}{2.57M^{-1}s^{-1}})=\frac{1.5\times 10^5J/mol}{2.303\times 8.314J/mole.K}[\frac{1}{701K}-\frac{1}{525K}]$

$K_2=0.0606M^{-1}s^{-1}$

Thus, the rate constant at 525 K is, $0.0606M^{-1}s^{-1}$

8 0

1 month ago

What mass of calcium carbonate (in grams) can be dissolved by 4.0 g of hcl? (hint: begin by writing a balanced equation for the

Alekssandra [2891]

The interaction between calcium carbonate and hydrochloric acid can be represented by the chemical equation,

CaCO3 + 2HCl --> CaCl2 + H2O + CO2

Calcium carbonate has a molecular weight of 100 g/mol, while hydrochloric acid's molecular weight is 36.45 g/mol. According to the equation, 100 g of calcium carbonate reacts with 72.9 g of hydrochloric acid.

x = (4 g HCl)(100 g CaCO3 / 72.9 HCl)
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Final result: 5.49 g

8 0

1 month ago

Read 2 more answers

A metallic object holds a charge of −4.8 × 10−6 C. What total number of electrons does this represent? (e = 1.6 × 10−19 C is the

Anarel [2728]

Answer:

$n=3.0\times 10^{13}$

Explanation:

Charge of one electron = $-1.6\times 10^{-19}\ C$

The formula for calculating charge is:

$Charge=n\times q_e$

Given that: Charge = $-4.8\times 10^{-6}\ C$

$-4.8\times 10^{-6}=n\times (-1.6\times 10^{-19})$

$n=\frac{4.8\times 10^{-6}}{1.6\times 10^{-19}}=3.0\times 10^{13}$

Total electrons, n = $3.0\times 10^{13}$

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1 month ago

What is the volume in liters of a cube whose edge is 4.33 cm long?

VMariaS [2860]

Assuming the edge length of the cube is m.
Since the cube's sides are all equal, you can find its volume using the formula:
volume of cube = m^3

Now, using the provided edge length:
volume = (4.33)^3 = 81.1827 cm^3

According to unit conversion standards, 1 cm^3 = 0.001 liters.
So:
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1 month ago

Would an alkali metal make a good replacement for tin in a tin can? Explain.

Tems11 [2631]

Answer:

Explanation:

When heated, tin could react with alkali metals, releasing hydrogen gas.

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9 days ago