Answer:
B
Explanation:
by simlfying it you get HCO2
Answer:
They fall slower.
Explanation:
moon's gravitation force is effected by the mass of the moon
but because the moon has less mass,
objects fall slower because it has less gravitation force
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Hope this helped.
Answer:
It's spontaneous in the reverse direction
Explanation:
A negative voltage indicate s that the reverse reaction is spontaneous (i.e. oxidation at the cathode, and reduction at the anode; by convention you would need to swap the labels on the electrodes)
<span>The gases in air can be separated from one another through a process known as the fractional distillation of liquid air. This is a process that converts air into a liquid form and then allows it to be portioned out into layers and separated from one another. Because pure oxygen and nitrogen have a number of applications, this is a useful technique. </span>
The correct option is this: TWO STEPS OF THE PROCESS ARE ENDOTHERMIC AND ONE STEP IS EXOTHERMIC.
The enthalpy change of solution refers to the heat change that occur when a substance is dissolved in a solvent.
Dissolving a substance in a solvent involves three distinct steps:
1. the breaking of the inter molecular forces that is holding the substance together. This process is endothermic because it needs energy to occur, therefore its enthalphy change is greater than zero.
2. The breaking of inter molecular forces that is holding the solvent molecules together. This process is also endothermic.
3. The mixing together of the solute and the solvent. The reaction is an exothermic reaction because energy is given off as the molecules bond togeher. <span />