# Freddo

Popular questions and responses by Freddo
1. ## Isotopes

I have an isotope, 292 uuh 116 this suffers seven successive alpha decay reactions, I know each for alpha decay reaction the isotope loses 4 He 2 so the atomic weight decreases by four, and the atomic number by 2... None of the elements shown in the

asked on January 23, 2007
2. ## Physics ...

Hi Radioactive decay - A radioactive nuclide has a decay constant of - 10^-6 s-1 what is its half life ? I have come up with is IN (2) / 0.000001 s-1 = 693147.18055 which i am having troube working into real figures Can anyone help please .. thanks

asked on August 24, 2013
3. ## Physics

Hi Radioactive decay - A radioactive nuclide has a decay constant of - 10^-6 s-1 what is its half life ? I have come up with is IN (2) / 0.000001 s-1 = 693147.18055 which i am having troube working into real figures Can anyone help please .. thanks

asked on August 24, 2013
4. ## Value of lava mass

This question has been posted before, and I amlooking for critque of my answer ..Thanks !!!! The specific heat capacity of the lava is 1600 J kg^-1 degres celsuis ^-1. when all the erupted lava cools from the eruption temperature of 1050 degrees Celsius to

asked on May 5, 2007
5. ## Density of Gas at STP

Hi Can anyone explain how to calculate the density in g l -1 of a gaseous oxide at STP. I don't understand the term g l -1 !! Thank You "g l-1" should have the -1 as a superscript, meaning g l^-1, or g/l. It means they want the density in grams per liter.

asked on January 24, 2007
6. ## Chemistry

Hi Can anyone help me determine the valency of selenium in hydrogen selenide... how do you work this out ??? Thank you .. Freddo .. H2Se is the formula for hydrogen selenide. The valence of H is +1, there are two of them for a total charge of +2. For the

asked on January 10, 2007
7. ## IT computer memory

Hi, Can someone check this for me please.. 18 MB of data are to be transmitted over a a megabyte per second connection. How long should the complete transaction take, to the nearest 0.1s. Size of file / data rate so, 18MB x 10^6 x 8 bits = 144,000,00 4

asked on January 13, 2011
8. ## Physics ...

Can anyone tell me what this symbol means μu What does it mean in therm of values such as AMUs like 170604μu Thanks

asked on August 27, 2013
9. ## IT computer memory

Can someone check this for me please.. 18 MB of data are to be transmitted over a a megabyte per second connection. How long should the complete transaction take, to the nearest 0.1s. Size of file / data rate so, 18,874,368 bytes / 4,000,000 = 4.718592 =

asked on January 12, 2011
10. ## Genetics/biology Advice

Can anyone comment as to wether this solution is correct for this question please !! Draw a mating diagram where L is the dominant gene for the digestion of lactose and shows the crosses between two heterozygotes and wiht the the phenotypic and genotypic

asked on March 22, 2007
11. ## DNA Lactase

Can anyone comment on my working out for the following question. position - - 1 2 3 4 5 6 7 8 9 - Nucleotide - - T A C T C G G A A - Write down the equivalent mRNA and hence work out the sequence of amino acid names coded in this part in the polypeptide

asked on March 11, 2007
12. ## Biomass increase !

Can anyone help please, Can anyone help me to calculate the increase in biomass in each of the three groups, Field mice Ingested 107Kj m-2 y-1 and lost 105 kj m-2 y-1 in respiration & faeces Grasshoppers ingested 444 kj and lost 374.3 kj and small birds

asked on December 30, 2006
13. ## Uuh Empirical formulae

Hi Can anyone help me define the empirical formula for highest fluoride and hydride in ununhexium. 292 uuh 116 How is this reached... Thanks freddo Uuh is in group 16 (or VIA depending upon the system being used) so its chemistry should be similar to O2,

asked on January 18, 2007
14. ## IT

Hi, IS it correct that DHCP is a protocol that enables network devices to share a pool of IP addresses. Is it also correct that DHCP operates at the APPLICATION Layer of the OSI model. Thanks

asked on January 16, 2011
15. ## IT Data transmission

Hi, Can someone check this for me please.. 18 MB of data are to be transmitted over a 4 megabits per second connection. How long should the complete transaction take, to the nearest 0.1s. Size of file / data rate so, 18MB x 10^6 x 8 bits = 144,000,00 4

asked on January 13, 2011
16. ## Genetics/biology

Can anyone comment as to wether this solution is correct for this question please !! Draw a mating diagram where L is the dominant gene for the digestion of lactose and shows the crosses between two heterozygotes and wiht the the phenotypic and genotypic

asked on March 22, 2007
17. ## IT

On an optical disc is an extended pit interpreted as as a series of 0 `s I think it is am I right ? Thanks

asked on January 14, 2011
1. ## Physics ...

Thank you for your time ..

posted on August 24, 2013
2. ## IT computer memory

to the nearest 0.1 s

posted on January 13, 2011
3. ## IT computer memory

Hi Sorry wasn't too clear This should read 18MB of data are to be transmitted over a 4 megabits per second connection ... how long would it take to complete the transaction

posted on January 13, 2011