Answer:
d. reducing agent
Explanation:
Na acts as a reducing agent. A reducing agent is a substance whose function is to reduce or donate electrons to another, and by doing so it becomes oxidized. We can see the mechanism of the reaction in the image attached below.
Answer:
D. Contracted Blood Vessels
Explanation:
The more constricted arterioles are, the greater their resistance to blood flow and the higher the blood pressure. Constriction of arterioles increases blood pressure because more pressure is needed to force blood through the narrower space. Conversely, dilation of arterioles reduces resistance to blood flow, thus reducing blood pressure.
Answer:
Elemental sulfur is used in black gunpowder, matches, and fireworks
Explanation:
<u>Answer:</u> The volume of balloon at 100°C is 4.46 L
<u>Explanation:</u>
To calculate the final temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
![\frac{V_1}{T_1}=\frac{V_2}{T_2}](https://tex.z-dn.net/?f=%5Cfrac%7BV_1%7D%7BT_1%7D%3D%5Cfrac%7BV_2%7D%7BT_2%7D)
where,
are the initial volume and temperature of the gas.
are the final volume and temperature of the gas.
We are given:
![V_1=3.50L\\T_1=20^oC=(20+273)K=293K\\V_2=?L\\T_2=100^oC=(100+273)K=373K](https://tex.z-dn.net/?f=V_1%3D3.50L%5C%5CT_1%3D20%5EoC%3D%2820%2B273%29K%3D293K%5C%5CV_2%3D%3FL%5C%5CT_2%3D100%5EoC%3D%28100%2B273%29K%3D373K)
Putting values in above equation, we get:
![\frac{3.5L}{293K}=\frac{V_2}{373K}\\\\V_2=4.46L](https://tex.z-dn.net/?f=%5Cfrac%7B3.5L%7D%7B293K%7D%3D%5Cfrac%7BV_2%7D%7B373K%7D%5C%5C%5C%5CV_2%3D4.46L)
Hence, the volume of balloon at 100°C is 4.46 L