Answer:
22.4 litres
Step-by-step explanation:
Reaction:
2Mg (s) + O2 (g) → 2 MgO (s)
From the reaction, we know that 2 moles of Mg (s) react with 1 mol of O2
STP conditions mean:
- absolute temperature of 273.15 K
- absolute pressure of 1 atm
Using the equation of state for ideal gases:
PV = nRT
where P is the absolute pressure, T is the absolute temperature, n are the moles, V is the volume, and R is the gas constant = 0.082 atm*L/(mol*K). Solving for V and replacing:
V = nRT/P
V = 1*0.082*273.15/1
V = 22.4 litres
That would be 0.272727272727272727
In fraction form = 3/11
Answer:
Margin of error = 0.09
Confidence interval = (0.29, 0.41)
Step-by-step explanation:
Sample size, n = 1023
p = 38%
= 0.38
Standard deviation, σ = 1.5
Consider the level of confidence to be 95%
So, corresponding z* value for 95% confidence level = 1.96
Hence, confidence interval = p ± margin of error
= 0.38 ± 0.09
= (0.29, 0.47)
Answer:
= 40%
Step-by-step explanation:
29+27+24=80
total = 80
32/80=0.4=40%
=40%
Answer:
Step-by-step explanation:
Hello!
In statistics, a Type I error is the probability of rejecting the null Hypothesis (i.e. supporting the alternative Hypothesis) when this Hypothesis is true. This probability is also know as the significance level of the test, symbolized α. So whatever the level of significance is, that is the probability of commiting Type I error. The most common significance level are it's 1%, 5% or 10%.
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