Points out that when water freezes
Answer:
if i consider this reaction
Fe2O3+ 3CO---》2Fe+ 3CO2
so let's calculate first moles of Fe2O3 i.e. = 256/159.69= 1.6 moles
So the one moles of Fe2O3 is forming three moles of CO2
hence 1.6 moles will form 4.8 moles of CO2
one mole of CO2 is 44 g so 4.8 moles of Co2 is 44×4.8= 211.2 g
so the conclusion is 211.2 g of CO2 can be produced from 256 g Fe2O3!!
i d k it's right or wrong but i tried my best :)
Bromocresol Green belongs to a class of dyes called as <span>Sulfonephthaleins. This dye imparts different colours at different pH's.
Colors at different pH:
</span> Bromocresol Green has a transition pH range between 3.8 and 5.4.
Color Below pH 3.8:
Bromocresol Green imparts Yellow color below pH 3.8.
Color Above pH 5.4:
Bromocresol Green imparts Blue color above pH 5.4.
Due to different colors at different pH this compound is used at Indicator in quantitative analysis techniques like Titration.
Result:
Bromocresol Green will give Blue color at pH 7.
Answer: The new volume of the container is 13.8 L
Explanation:
To calculate the new volume of the system, we use the equation given by Avogadro's Law. This law states that volume of the gas is directly proportional to the number of moles of the gas at constant pressure.
Mathematically,
![\frac{V_1}{n_1}=\frac{V_2}{n_2}](https://tex.z-dn.net/?f=%5Cfrac%7BV_1%7D%7Bn_1%7D%3D%5Cfrac%7BV_2%7D%7Bn_2%7D)
where,
are the initial volume and moles of the gas.
are the final volume and moles of the gas.
We are given:
![V_1=25.5L\\n_1=3.5\\V_2=?\\n_2=1.9](https://tex.z-dn.net/?f=V_1%3D25.5L%5C%5Cn_1%3D3.5%5C%5CV_2%3D%3F%5C%5Cn_2%3D1.9)
Putting values in above equation, we get:
![\frac{25.5}{3.5}=\frac{V_2}{1.9}\\\\V_2=13.8L](https://tex.z-dn.net/?f=%5Cfrac%7B25.5%7D%7B3.5%7D%3D%5Cfrac%7BV_2%7D%7B1.9%7D%5C%5C%5C%5CV_2%3D13.8L)
Thus the new volume of the container is 13.8 L