Answer:
The solution is always homogeneous mixture and transparent through which the light can travel. The mixture of water and sugar is a solution because sugar is soluble in water and form homogeneous mixture while the sand can not dissolve in water and sand particles scatter the light.
Explanation:
Solution:
"The solution is always homogeneous mixture and transparent through which the light can travel"
The mixture of water and sugar is a solution because sugar is soluble in water and form homogeneous mixture. The solubility of sugar is high as compared to the sand in water because the negative and positive ends of sucrose easily dissolve into the polar solvent i.e, water
Suspension:
"Suspension is the heterogeneous mixture, in which the solute particles settle down but does not dissolve"
The mixture of water and sand is suspension. The sand can not dissolve in water because it is mostly consist of quartz. The nonpolar covalent bonds of sand are too strong and cannot be break by water molecules.
<u>Given:</u>
Mass = 68 kg
Power = 65 W
<u>To determine:</u>
Calories burned during an 8.0 hr sleep
<u>Explanation:</u>
Energy is expressed as:
Energy = Power * Time
Now, the unit of power = Watt (W)
1 W = 1 J/s i.e. 65 W = 65 J/s
Time = 8 hrs = 8 * 3600 s = 28800 s
Energy = 65 J/s * 28800 s = 1872000 J
Convert Joules (J) to calories (cal)
1 cal = 4.184 J
The calculated energy = 187200 J * 1 cal/4.184 = 447418 cal
Ans: The man burns nearly 447.4 kcal during an 8 hr sleep
True, in space the tail of a comet will be cold since it a. doesnt have a hot core and b. are typically not found near the sun
Answer:
They all react with acids.
Explanation:
Thus, they decrease the concentration of stomach acid and provide heartburn relief.
The equations for the reactions are:
- Mg(OH)₂ + 2HCl ⟶ MgCl₂ + 2H₂O
- Al(OH)₃ + 3HCl ⟶ AlCl₃ + 3H₂O
- CaCO₃ +2HCl ⟶ CaCl₂ + H₂O + CO₂
<span>The
flowers undergo photosynthesis so it is expected to release O2. When you zip
the flower in a plastic bag and placed it in the refrigerator, the plastic bag
will shrink in size. The extra air plus the O2 in the back forms gaseous water.
This gaseous water will slowly liquefy and when placed in the fridge, it will
condense to form water solids.</span>
