Answer:
<h3>The answer is 284.05 g</h3>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
<h3>mass = Density × volume</h3>
From the question
volume = 325 mL
density = 0.874 g/mL
We have
mass = 325 × 0.874
We have the final answer as
<h3>284.05 g</h3>
Hope this helps you
1 mole of NaHCO3 contains 84.007g,
Therefore,to get the number of mass of 6.33 mol we multiply the number of moles and the relative formula mass.
That is; 6.33 moles × 84.007 g = 531.764 g
Hence the mass of 6.33 moles of NaHCO3 is 531.764 grams
Answer:
A. It increases the concentration of OH in solution.
Explanation:
Delivering electricity to homes through high voltage lines, reduces the power loss that is caused by Joule's heating.
We know that:
P=VI
Where, P is power, V is the voltage and I is the current.
So if we keep P constant and make then voltage up, I must goes down.
According to Joule's first law : Power of heating generated by a conductor is directly proportional to the product of its resistance and the square of the current.
Now using the equation:
Q=I²Rt
Where Q is the heat generated, I is the current , R is the resistance and t is the time.
So by reduced I, heat loss will be reduced.
