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Why you need sampling distribution?
in order to calculate the mean of the sample's mean and also to calculate the standard deviation of the sample's
How do you calculate mineral contents of the sample?
We would need to know what sample you are referring to in order to answer this question.
How do you calculate sample size?
Count up the number of obseravtions made on the experimental units. That is the sample size.
How do you calculate density using a formula?
Density of a substance = (mass of a sample of the substance) divided by (volume of the same sample)
How do you calculate the mean of the sampling distribution of the sample proportion?
i dont no the answer
How do you calculate water hardness in parts per million (ppm)?
To calculate water hardness in parts per million (ppm), you can use the formula: Hardness in ppm (Hardness in mg/L) x 1.0.
How do you calculate the formula for water hardness?
To calculate the formula for water hardness, you can use the formula: Water Hardness (in mg/L) (Calcium concentration in mg/L x 2.497) (Magnesium concentration in mg/L x 4.115). This formula takes into account the concentrations of calcium and magnesium ions in the water to determine the overall hardness.
How do you measure permanent hardness by EDIT titration?
To measure permanent hardness by EDTA titration, first add a buffer solution to the water sample to maintain a stable pH. Then, titrate with standardized EDTA solution until the color changes indicating the endpoint. The volume of EDTA required to reach the endpoint can be used to calculate the concentration of the ions causing permanent hardness in the water.
Why hardness is a intensive?
Because the hardness is not dependent to the size of a material sample.
How do you Calculate the total hardness of water sample that contains ppm magnesium and ppm calcium?
Answer will be (mg/L) as CaCO3 units of ppm are the same as mg/L. Hardness = 2.5(mg Ca/L) + 4.1(mg Mg/L) In this case: 2.5x78.4 + 4.1x104.5 = 624.45 mg/L
Why is ammonia-sodium chloride buffer solution is added in the determination of total hardness of water?
Ammonia-sodium chloride buffer solution is added in the determination of total hardness of water to prevent interference from other ions that may be present in the water sample. It helps to maintain a constant pH level, ensuring the validity of the hardness test results. Additionally, the buffer solution can help stabilize the complexation reactions between the calcium and magnesium ions in the water sample with the chelating reagent used in the hardness test.
Sample problem on speed and its solution?
hardness
What sample of hardness material?
magnets steal
A corrosion technologist pipetted a 100 ml hard water sample and titrated it with 37.64 ml of 0.01 m edta solution for a total hardness endpoint and 29.32 ml of 0.01 m edta solution for a calcium?
The total hardness of the water sample is calculated as 37.64 ml of 0.01 M EDTA solution. The calcium hardness is calculated as the difference between the total hardness and the magnesium hardness, which is 29.32 ml of 0.01 M EDTA solution. It's important to conduct proper titration techniques to ensure accurate results for water quality assessment.
How do you calculate the hardness of water?
The hardness of water is calculated by measuring the concentration of calcium and magnesium ions in the water. This is typically done using a titration method with a chelating agent like EDTA. The results are then expressed in terms of calcium carbonate equivalents.
Is hardness extensive or intensive?
No matter what size a sample is, if is hard, it will still be just as hard. This means that hardness is an intensive properties. Intensive properties do not matter what size of sample is being used. Extensive properties will change if sample size is changed.
Which does not cause hardness of water?
Distilled water does not contribute to water hardness as it does not contain minerals such as calcium and magnesium responsible for the hardness of water.
