What is the mass of the ethyl alcohol that exactly fills a 200.0 ml container? The density of ethyl alcohol is 0.789 g/ml.

The answer is

Step-by-step explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of ethyl alcohol = 200 mL

density = 0.789 g/mL

The mass is

mass = 200 × 0.789

We have the final answer

Hope this helps you

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step-by-step explanation:

1+2+3+4+5+6+7+8+9+10 = 55

2*10 = 20

55-20 = 35

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.