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Abba
Questions and answers by visitors named
Abba
Questions (12)
How many moles of oxygen are present in 8g of oxgen gas.
1 answer
309 views
you have a 0.200L of solution containing 250mM phosphate buffer, pH 6.8.
An equivalent amount of HCl/NaOH with respect to the
3 answers
642 views
Write up the recipe to make 100mL of a 200mM phosphate buffer, pH 7.0 by using:
(a) only NaH2PO4 (MW 120g/mol) and NaOH (1.00M)
3 answers
848 views
Determine the MAX amount of titrant you will possibly need for your titration.
Your unknown solution has been prepared by
1 answer
531 views
Determine the MAX amount of titrant you will possibly need for your titration.
Your unknown solution has been prepared by
2 answers
568 views
you have a 0.200L of solution containing 250mM phosphate buffer, pH 6.8.
An equivalent amount of HCl/NaOH with respect to the
3 answers
732 views
Determine the MAX amount of titrant you will possibly need for your titration.
Your unknown solution has been prepared by
1 answer
476 views
A stone wirelesd at the rope 30cm long makes 10 complete revolution in 25 second
3 answers
447 views
A stone is whirled at the end of a rope 30cm long,makes 10 complete revolution in 2 seconds.find (1)the angular velocity in
10 answers
2,711 views
A pulley system of 4 pulleys is used to raise a loan of mass 50kg vertically,if its effeciency is 80%,determine the minimum
4 answers
1,505 views
Given that 1/y-2x, 1/y, 1/y-2z are in A.P, prove that x(y-z), xz, z(y-x) are also in A.P.
1 answer
152 views
a body of mass 10kg and initially at rest is subjected to a force of 20N through a distance of 10m calculates the change in
2 answers
51 views
Answers (10)
Calculate the gravitational force of attraction between two protons in a chemical compound.Take the mass of proton as 0.0000000000000000000000000000167 kilogramme and the distance between the protons in a chemical compound is 0.000000000010 metre
Ibrahim
I need your help on this
Answer
The density of mercury is 1•36×10^4kgm^3 at 0°c calculate it values at 100°c and at 22°c take 3 linear expansivity if mercury 180×10^6k^1
Mallam gaji
for 1) I got 7.42 after trying. I wanted to confirm if it is right to see if I got the process right?
Thank you so much!
How did you solve it? I wasn't really looking for an answer but the process because I don't really get it.
T=3s
