# Posts by juan777

Total # Posts: 14

math stats
how do i draw a histogram for the data (8,0,7,5,5)

math(stats)
sample of n=5 scores (8,0,7,5,5) make an estimate of the standard deviation by finding average distance of the smallest and largest distance from the mean

math
A six sided die is rolled three times. List possible outcomes and find the probability of rolling exactly one 6.

math (stats)
A biology professor gives a surprise quiz consist of a true/false question followed by a multiple choice question with four possible answers. If both questions are answered with random guesses, find the probability that both responses are correct. Please show your work.

math
A couple intends to have four children. Assume that having a boy and girl is equally likely event. a) List sample space b) Find the probability that couple has two boys and two girls; c) Find the probability that couple has at least one boy

math (statistics)
Suppose you are looking for a job. You interview with a company that has 10 general employees each make \$100 per day, 7 assistants each make \$400 per day, 3 managers each make \$900 per day, and the owner who makes \$1900 per day. The interviewer tells you that the average ...

Chemistry
how many valence electrons does a carbon radical possess?

chemistry
how many carbons in nonane are in the sp2 hybridization state

organic chemistry
how many carbons in nonane are in the sp2 hybridization state

organic chemistry
state whether you would expect each of the following properties to be identical or different for the two enantiomers of 2-pentanol. Explain a)boiling point b)optical rotation c)solubility in hexane d)density e)solubility in (S)-3-methylhexane f)dipole moment g)taste

organic chemistry
state whether you would expect each of the following properties to be identical or different for the two enantiomers of 2-pentanol. Explain a)boiling point b)optical rotation c)solubility in hexane d)density e)solubility in (S)-3-methylhexane f)dipole moment g)taste

Chemistry
A reaction A+B---> C has a standard free energy change of -5.13 kj/mol at 25 degrees celcius, What are the concentrations of A, B, and C at equilibrium if at the beginning of the reaction there concentrations are .3M, .4M, and 0M respectively?

Chemistry
if 8.7 g of butanoic acid is dissolved in enough water to make 1.0 L of solution, what is the resulting pH

chemistry
if atoms give off light, why don't they glow?

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