Answer:
0.10865 killograms
Step-by-step explanation:
calculating the liquid mass of ammonia removed through the bottom value from a rigid tank at constant temperature.
Given:
temperature: 
quality : 50% = 0.5
initial mass: 
to find the removed liquid mass first we have to find total volume from which we can find remaining mass. as the tang is rigid the temperature and volume remains constant.
by taking the difference of mass we can determine the mass of liquid removed.
we have two phases at temperature
with specific volume for liquid
and specific volume for vapor is
.
The Volume in the initial state is given by, (Using definition of specific volume)

using 

substituting
,
, 
we get
finally
we know the formula to find liquid mass is

density of ammonia is 
inserting the values into the formula we get the value for liquid mass removed through the valve.

the final answer is

Find the ratio of the area to the square radius for each circle.
Answer:
1st quadrant
Step-by-step explanation:
Answer:
-72
Step-by-step explanation:
Answer:
532
Step-by-step explanation:
The score that represents the top 20% = A score = 80%
Z score for 80% percentile = 0.842
We solve using the z score formula
z = (x-μ)/σ, where
x is the raw score = ??
μ is the population mean = 490
and σ is the population standard deviation = 50
Hence:
0.842 = x - 490/50
Cross Multiply
0.842 × 50 = x - 490
x = 0.842 × 50 + 490
x = 42.1 + 490
x = 532.1
Approximately = 532
Therefore, the test score = 532