Density is the ratio of the substance's mass to volume. To know the effects of temperature on the density of the liquid, we must look at the mass and volume dependence. Mass is always constant, so it is not affected by temperature. For volume, generally, the molecules of the liquid occupy a greater space when heated because of the rapid collisions of the liquid molecules. Thus, as temperature increases, the volume of liquid also increases, although slightly only. That means that density would decrease.
Answer:
1. Water can separate from salt solution by simple distillation
2. Simple distillation happens through a process heating and cooling liquids in order to separate the purify them, first, a liquid is heated producing a vapor, then, that vapor is cooled in a small tube called a condenser in order to form a separate liquid that liquid, sometimes referred to as the distillate, falls from the condenser into a separate container, the process works because it to liquids in the original vaporized a different point, meaning, the vapor that is created is comprised entirely of just one of the liquids in order for a simple work the 2 liquids boiling point must have been between at least 25 degrees Celsius about 77 degrees Fahrenheit
Explanation:
ig u can get info from the 2. to help u srry I don't feel like correcting my grammar but I hope that makes sense :)
Answer:
Cu + Fe 3 Pb 2 +
Explanation:
the most reactive metal is the strongest reducing agent but weakest oxidizing agent. And therefore copper being the least reactive turns to be the strongest oxidizing agent followed by iron then lead.
Answer:
21 kJ
Step-by-step explanation:
The formula for the heat q is
q = mCΔT
<em>Data:
</em>
m = 200 g; C = 4.184 J·°C⁻¹g⁻¹
T₁ = 50. °C; T₂ = 25 °C
<em>Calculations:
</em>
ΔT = T₂ - T₁
ΔT = 25 – 50.
ΔT = -25 °C
q = 200 × 4.184 × (-25)
q = -21 000 J Convert to kilojoules
q = -21 kJ
The negative sign shows that energy is released, so the water has released 21 kJ of energy.
Answer:
B.
Explanation:
When we say "biosphere", we're referring to the atmosphere, geosphere, lithosphere and hydrosphere, and everything in them. You've probably heard of these in class as the "pillars of Earth" or the "pillars of our planet". In other words, when we talk about biosphere we're talking about life.
Organic compounds are all of the compounds that contain carbon, C, in them. You might know that CHNOPS* are the "7 molecules of life", and you might have noticed that Carbon stands first in the list, and that's not because it makes up a mnemonic, Carbon is indeed the most important one in many ways.
*Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus and Sulfur.
Hope it helped,
BiologiaMagister