Other Chemistry Answers

A sample of helium gas effuses at a rate of 12m/sec. Another gas effuses at a rate of 6.0m/sec. What is the molar mass of the unknown gas?

If a balloon is filled with He, Ne, and Ar gases at a total pressure of 2.0atm, what is the partial pressure of argon if the partial pressures of helium and neon are both 0.25atm each?

Hi,May I please ask “What is the distinction between a bond dipole and a molecule dipole moment”?

Words to choose:Asymmetric,equal,monatomic,molecular dipole moment,bond dipole,symmetric,unequal , triatomic,diatomic.


A bond dipole is the _____ charge distribution between two bonded atoms with ______ electronegativities. A molecular dipole moment is the three-dimensional sum of all the bond dipoles in a molecule. (A ______is a measurable physical property; a ______is not measurable, unless the molecule is ______ .)


Thanks.

Hi,May I please ask the molecule difluoromethane(CH2F2) which is used as a refrigerant called R-32:

1)Based on the structure,how many electron domains surround the C atom in the molecule?

2)Would the molecule have nonzero dipole moments?yes/no

Thanks

What is mirepoix in homescience

a) (i) Use EDTA structure to describe hexadentate chelating agent (2mks) (ii) State four types of EDTA titrations (2mks) b)ii)Consider the titration of 50mL Mg 2+ sample in a pH = 10.00 buffer with 0.05M EDTA as titrant. Calculate the amount of Mg in ppm if the titre is 5ml of EDTA (3mks) ii) Calculate the pH of a 1000-mL buffer solution containing 0.200M NH4OH and 0.300M NH4CI. (3mks)

How does the presence of seed in a fruit affect the vitamin c content? That is how would removing seeds from a fruit affect the vitamin c content.

A balloon containing helium gas has a volume of 38.8 L at a temperature of 25° C inside a house. If the balloon is moved outside, where the temperature is only -15° C, what would be the volume in L of the balloon?

Sodium and chlorine combine to form sodium chloride. How many grams of sodium chloride are produced if 8.3 moles of chlorine react?

The electron arrange mentions X3-and Y2-are2,8,and 2,8,8respectively.

(a)

Write the electronic arrangement of the elements X and Y.

(2mks)

(b)

Write the formula of the compound that would be formed between

X and Y.