I think its A. but i'm not 100% sure.
amount of CaO that would be produced when 35.5g of CaCO3 decompose on heating (Ca= 40, O = 16, C = 12, H = 1
just put the values to have answer
Answer:
0.196 M
Explanation:
First, we have to calculate the moles of sodium hydroxide.
moles = mass / molar mass
moles = 3.9280 g / (39.997 g/mol) = 0.098207 mol
It is important to realize that even though 300 mL is the volume of water firstly added to dissolve the hydroxide, the flask is then filled to the mark, meaning that the volume of the solution is 500 mL = 0.500 L.
The molar concentration of sodium hydroxide is:
The concentration is an intensive property, that is, it does not depend on the amount of matter. As a consequence, the concentration of the 50 mL of solution in the buret is the same as the concentration in the flask.
Answer:
Percent yield = 75%
Explanation:
Given data:
Actual yield of ammonia = 60 g
Theoretical yield of ammonia = 80 g
Percent yield = ?
Solution:
Percent yield is calculated dividing the actual yield by theoretical yield and multiply by 100.
Formula:
Percent yield = Actual yield / Theoretical yield × 100
Now we will put the values in formula.
Percent yield = 60 g/ 80 g × 100
Percent yield = 0.75 × 100
Percent yield = 75%
So if the reaction yield is 60 g and calculated yield ( theoretical yield) is 80 g then the percent yield would be 75%.
Answer:
With respect to a fixed point, motion is defined as a change in<u> position.</u>
Explanation:
MOTION -: Motion is described as the fact in which any object or body changes its position over the time with respect to a fixed point .
Motion is defined as displacement, distance, velocity , acceleration, speed , and time in mathematical terms. By linking an observer to a frame of reference and measuring the shift in the position of the body with a change in time relative to that frame, the motion of a body is observed.
