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3 years ago

¿Por qué crees que es importante conocer nuestra condición económica antes de practicar actividades físicas regularmente?

Chemistry

1 answer:

gogolik [260]3 years ago

3 0

Answer:

el ejercicio físico ayuda a gente a perder peso y reduce el riesgo de desarrollar algunas enfermedades. el ejercicio físico regular el reducen los riesgos de ciertas enfermedades como obesidad, diabetes tipo 2 e hipertensión el ejercicio físico puede ayudar a mantener el cuerpo en un peso saludable pero a veces algunos tienen enfermedades al corazón o asma y les afecta a ser demasiado práctica esa actividad

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Calculate the pHpH of a 0.10 MM solution of HClHCl . Express your answer numerically using two decimal places.

alisha [4.7K]

Answer: The pH 0f 0.10 solution of HCl is 1.00

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

$pH=-\log [H^+]$

$HCl\rightarrow H^++Cl^{-}$

According to stoichiometry,

1 mole of $HCl$ gives 1 mole of $H^+$

Thus $0.10$ moles of $HCl$ gives = $\frac{1}{1}\times 0.10=0.10$ moles of $H^+$

Putting in the values:

$pH=-\log[0.10]$

$pH=1.00$

Thus pH 0f 0.10 solution of HCl is 1.00

8 0

2 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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How traits are passed from parents to offspring

pantera1 [17]

Its genes from your parents

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the half life for strontium-90 is 29 years. how many half-lives did the sample go through at the end of 87 year

Nesterboy [21]

90 divided by 29 x 87 = 290

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1 year ago

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Adding vinegar to baking soda will cause a chemical reaction. Which of these will speed up the reaction?

vesna_86 [32]

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