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4 years ago

7. Crive reason :a) CO₂ asoxide

Chemistry

1 answer:

vovangra [49]4 years ago

3 0

I don’t understand it sorry. Byeeeeeeeejejeejjdjdkdkskdkkzksksskskskkwkwkwkwkwkwkwkkw

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Which of the following would have the smallest ionization energy? S Р K Ca

goldenfox [79]

Answer:

Explanation:

Ionization energy decreases from top to bottom and increases from left to right on the periodic table

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3 years ago

Consider the equilibrium: HCOOH(aq) + F-(aq) <----> HCOO-(aq) + HF (aq) Given that the Ka of HCOOH = 1.8 x 10-4 and the Ka

Aleks [24]

Hey there!:

K = Ka * Kb / Kw

Ka = 1.8*10⁻⁴

Kb = 10⁻¹⁴ / 6.8*10⁻⁴

K = 1.8*10⁻⁴ * ( 10⁻¹⁴/ 6.8*10⁻⁴ ) * ( 1 / 10⁻¹⁴ )

K = = 1.8 / 6.8

K = 0.265

Answer A

Therefore:

K is less than on the forward reaction is not favorable .

Hope That helps!

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4 years ago

A constant-volume calorimeter was calibrated by carrying out a reaction known to release 3.50 kJ of heat in 0.200 L of solution

Dmitrij [34]

Answer:

The change in internal energy is - 1.19 kJ

Explanation:

Step 1: Data given

Heat released = 3.5 kJ

Volume calorimeter = 0.200 L

Heat release results in a 7.32 °C

Temperature rise for the next experiment = 2.49 °C

Step 2: Calculate Ccalorimeter

Qcal = ccal * ΔT ⇒ 3.50 kJ = Ccal *7.32 °C

Ccal = 3.50 kJ /7.32 °C = 0.478 kJ/°C

Step 3: Calculate energy released

Qcal = 0.478 kJ/°C *2.49 °C = 1.19 kJ

Step 4: Calculate change in internal energy

ΔU = Q + W W = 0 (no expansion)

Qreac = -Qcal = - 1.19 kJ

ΔU = - 1.19 kJ

The change in internal energy is - 1.19 kJ

4 0

4 years ago

Using the Acceleration Equation

Maru [420]

Answer:

Change in velocity (\Delta v) is acceleration (a) times time (t)

Acceleration a=1.2\ m/s^{2}

Time t=10\ s

So \Delta v=at=1.2\ m/s^{2}*10\ s=12\ m/s

The initial velocity is then 16\ m/s-12\ m/s=4\ m/s

Easy Answer: 4m/s

Explanation:

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3 years ago

Give 3 examples of solutions, suspensions and colloids..

Vlad [161]

Some examples of solutions":" are salt water, rubbing alcohol, and sugar dissolved in water.

examples of suspensions are muddy water milk of magnesia Slaked lime for whitewashing.

examples of colloids are whipped cream, mayonnaise, milk,

5 0

3 years ago

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7. Crive reason :a) CO₂ asoxide​

7. Crive reason :a) CO₂ asoxide