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3 years ago

If the pressure of the reactants increase, What happens to the product.

1 answer:

7 0

Increasing the pressure on a reaction involving reacting gases increases the rate of reaction. Changing the pressure on a reaction which involves only solids or liquids has no effect on the rate.

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A concentrated salt solution has a mass of 5.29 g for a 5.00 mL sample. What is the specific gravity of this solution

TiliK225 [7]

Answer:

$\rho_s=1.07g/cc^3$

Explanation:

From the question we are told that:

Mass $M=5.29g$

Volume $V=5.00mL=>5.0cc^3$

Generally the equation for Specific Gravity momentum is mathematically given by

$Specific\ Gravity\ g= Density\ of\ Salt\ Solution\ \rho_s / Density\ of\ Water\ \rho_w$

$g=\frac{ \rho_s} { \rho_w}$

$\rho_s=\frac{ g} { \rho_w}$

$\rho_s=\frac{ 5.29} { 5}$

$\rho_s=1.07g/cc^3$

7 0

3 years ago

We know that for a given reaction when the temperature increases from 100 k to 200 k the rate constant doubles. What is the acti

Alenkasestr [34]

Answer:

The activation energy of the reaction is 1.152 kJ/mol.

Explanation:

Activation energy is the minimum amount which is absorbed by the reactant molecules to undergo chemical reaction.

Initial temperature of reaction = $T_1=100 K$

Final temperature of reaction = $T_2=200 K$

Initial rate of the reaction at 100 k = $K_1=k$

Final rate of the reaction at 200 k = $K_2=2k$

Activation energy is calculated from the formula:

$\log\frac{K_2}{K_1}=\frac{E_a}{2.303\times R}(\frac{T_2-T_1}{T_1T_2})$

R = Universal gas constant = 8.314 J/ K mol

$\log\frac{2k}{k}=\frac{E_a}{2.303\times 8.314 J/K mol}(\frac{200 K-100K}{200 K\times 100K})$

$E_a=1,152.772 J/mol=1.152 kJ/mol$

5 0

3 years ago

An acid with a H+ molarity of 1.4x10^-5 M has a pH of?

gregori [183]

Answer:i created brainly follow me and u grt all the answers u need

Explanation:

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3 years ago

What is the freezing point of bromine

Licemer1 [7]

19.04 degrees Fahrenheit

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3 years ago

Ultraviolet photoelectron spectroscopy (UPS) is an important analytical tool used to characterize the composition of materials i

Setler [38]

Answer:

The equation for the Kinetic Energy, $KE_e$ , of the photo-emitted electrons is given as follows;

$KE_e = h\cdot f- BE$

Please find attached the required plot of the kinetic energy versus the frequency

Explanation:

The equation for the Kinetic Energy, $KE_e$ , of the photo-emitted electrons is given as follows;

$KE_e = h\cdot f- BE$

Where:

h = Planck's constant = 6.63×10⁻³⁴ J·s

f = Frequency

BE = Binding Energy = 2.71 eV for Calcium metal

f₀ = Threshold frequency for the material

The ionization energy is the energy required to free an electron from an isolated atom

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3 years ago