Answer:
26.81 moles
Explanation:
From the coefficients of the equation, we know that for every 2 moles of iron(III) oxide produced, 7 moles of oxygen are consumed.
So, the answer is 7.66(7/2), which is 26.81 mol.
Answer:
yeeehhhhhh
Explanation:
basically my charger doesnt work
Answer:
Silver, 0.239 J/(g °C)
Explanation:
- The heat change is related to specific heat as given by the formula;
Heat change = mass of substance × specific heat × change in temperature
- Therefore; considering same amount of substance or equal masses and have the same initial temperature.
- The change in temperature will be inversely proportional to the specific heat.
- Therefore; the higher the specific heat lower the temperature change.
- Hence, the change in temperature will be highest for the substance with the lowest specific heat.
Therefore; the one that will increase in temperature the most is Silver
Your answer cannot be MORE precise than the least precise measurement. The following rule applies for multiplication and division: The LEAST number of significant figures in any number of the problem determines the number of significant figures in the answer.
Write and equation: H₂SO₄ + 2KOH ===> K₂SO₄ + 2H₂O
find moles of the known (KOH): <span>Moles = volume x moles / 1000
moles = 22</span>.87 x 0.158 / 1000 = 0.00361346
use ratio 2:1 so the moles of H₂SO₄ is 0.00361346 / 2 = <span>0.00180673
</span>
now use equation: Conc. = moles x 1000 / volume
Conc. = 0.00180673 x 1000 / 20 = <span>0.00180673moldm</span>⁻¹