La respuesta correcta a esta pregunta abierta es la siguiente.
Al parecer, la pregunta está incompleta y no incluye ninguna referencia. A pesar de eso, lo que podemos decir es que el problema en mi entorno, puede ser con un producto de cerámica, metal , tejido, madera, vidrio, plástico, etc., al elaborar materiales propios de mi región, es la fabricación de muebles de madera pero desafortunadamente el problema que se presenta es la tala ilegal de árboles que sólo causan deforestación y daño a la ecología de mi región y al medio ambiente.
Un porcentaje importante de la economía de la región gira en toro a la fabricación de muebles de madera. Mucha gente trabaja en ello. El problema es que gran parte de esa actividad no está regulada y eso hace que organizaciones delictivas talen árboles en zonas protegidas, lo que provoca graves daños al ecosistema.
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Take for example the heating of water.
When heating liquid water from room temperature (25 °C) to the boiling point (100 °C), adding heat results in a direct increase in the temperature. This kind of heat is called sensible heat, because we can sense the effect of the added energy.
But when you reach 100 °C, there is a phase change from liquid to vapour, and the added heat is used to produce the phase change, and no increase in temperature is observed, only the phase change. This kind of heat is called latent heat.
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1 L=.001 m^3=1.0E^-9 cm^3
Answer:
0.056moles HF and 0.70M
Explanation:
When a strong acid is added to a buffer, the acid reacts with the conjugate base.
In the system, NaF and HF, weak acid is HF and conjugate base is NaF. The reaction of NaF with HCl (Strong acid) is:
NaF + HCl → HF + NaCl
Initial moles of NaF and HF in 60.0mL of solution are:
NaF:
0.0600L × (0.80mol / L)= 0.048 moles NaF
HF:
0.0600L × (0.80mol / L)= 0.048 moles HF
Then, the added moles of HCl are:
0.0200L × (0.40mol / L) = 0.008 moles HCl.
Thus, after the reaction, moles of HF produced are 0.008 moles + the initial 0.048moles of HF, moles of HF are:
<em>0.056moles HF</em>
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In 20.0mL + 60.0mL = 80.0mL = 0.0800L, molarity of HF is:
0.056mol HF / 0.0800L = <em>0.70M</em>
Speed is the absolute value of velocity. Speed being a scalar (magnitude) and Velocity is a vector (magnitude and direction). Both speed and velocity have to deal with magnitude. An example would be that speed would be 15 miles/hour while velocity would be 15 miles/ hour towards the west.