3 years ago

Which of the following statements is true?

Chemistry

2 answers:

statuscvo [17]3 years ago

5 0

The correct answer is D

Valentin [98]3 years ago

4 0

d is the correct answer

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A glass of unsweetened lemonade has a mass of 255 grams. A spoonful of sugar is massed before stirring It Into the lemonade and

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Answer:

270

Explanation:

Once you add more mass to something the mass doesn’t go away you add more mass.

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3 years ago

In a transverse wave that travels through a medium, the molecules of the medium vibratea. at twice the velocity of the molecules

viktelen [127]

B. at a right angle to the wave's direction

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3 years ago

For the reaction at 298 K, 2NO2(g) N2O4(g) the values of ΔH° and ΔS° are -58.03 kJ and -176.6 J/K, respectively. Calculate the v

Ierofanga [76]

Answer:

$\Delta G^o=-5.4032 kJ$

The temperature for $\Delta G^o=0[/tex is [tex]T=328.6 K$

Explanation:

The three thermodinamic properties (enthalpy, entropy and Gibbs's energy) are linked in the following formula:

$\Delta G^o=\Delta H^o + T*\Delta S^o$

Where:

$\Delta G^o$ is Gibbs's energy in kJ

$\Delta H^o$ is the enthalpy in kJ

$\Delta S^o$ is the entropy in kJ/K

$T$ is the temperature in K

Solving:

$\Delta G^o=-58.03 kJ - 298K*-0.1766 kJ/K$

$\Delta G^o=-5.4032 kJ$

For $\Delta G^o=0$ :

$0=\Delta H^o - T*\Delta S^o$

$\Delta H^o= T*\Delta S^o$

$T=\frac{\Delta H^o}{\Delta S^o}$

$T=\frac{-58.03 kJ}{-0.1766 kJ/K}$

$T=328.6 K$

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3 years ago

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I. Witch direction does the electric field point at a position directly west of a positive charge

RUDIKE [14]

Answer:

The answer is North

Explanation:

The direction of the field is taken to be the direction of the force it would exert on a positive test charge.

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Hard question !! Is this math .. if not then oh okay cause I’m bad at math but good at everything else so let me think about it !

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3 years ago