Answer:
Our bodies are designed to regulate our temperature. When it's cold outside, your body makes sure to keep the blood flowing to your core and vital organs to keep them warm. This can change the amount of blood flow to your hands and feet, making them feel cold
Coplorites I believe.
Hope this helps!
:)
Answer:
These tests determine the solubility of the compounds formed upon adding the test solution
Explanation:
Addition of Ba(NO₃)₂ will cause a precipitate ((Ba)₂SO₄) to form in the solution of (NH₄)₂SO₄. No precipitates will form in the other unknown solutions. Thus, whether or not the solution is ammonium sulfate can be determined.
Addition of NaCl solution will cause a precipitate (AgCl) to form in the solution of AgNO₃. No precipitates will form in the other unknown solutions. Thus, whether or not the solution is silver nitrate can be determined.
If no precipitates form, then the unknown solution must be KCl.
Between the ages of 40 and 50, the number of taste buds decreases, and the rest begin to shrink,losing mass vital to their operation. After age 60, you may begin to lose the ability to distinguish the taste of sweet, salty, sour, and bitter foods.
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Answer:</h3>
300 kPa
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Explanation:</h3>
Concept tested: Gas Laws (Combined gas law)
Initial pressure, P₁ = 100 kPa
Initial temperature,T₁ = 27°C
But, K = °C + 273, therefore, T₁ = 300 K
Initial volume, V₁ = 900 L
New temperature, T₂ = -73°C
= -73°C + 273
= 200 K
New volume, V₂ = 200 L
We are required to calculate the new pressure, P₂
- To find the new pressure of the gas, we are going to use the combined gas law;
- Combined gas law combines both Charles's law and Boyle's law.
- According to the combined gas law;
P₁V₁/T₁ = P₂V₂/T₂
- To calculate the new Pressure, P₂, we rearranging the formula;
P₂ =(P₁V₁T₂) ÷ (V₂T₁)
Therefore;
P₂ = (100 kPa × 900 L × 200 K) ÷ (200 L × 300 K)
= 300 kPa
Therefore, a pressure of 300 kPa must be applied.
