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Question - Assume you have 10 micrograms (1 microgram = 10-6 gram) of pure Ru-106. How many nuclei N0 is this?
I require expert help to solve the above question. Illustrate each and every step.
If 0.200 M NaI is slowly added to 20.00 mL of a solution that is 0.0500 M Pb2+, 0.0400 M Hg22+, 0.0600 M Ag2+, and 0.0800 M Tl+, in what order do the iodides precipitate
Calculate the change in entropy of a system (in Joules) when 20.0 moles of oxygen gas undergo an isothermal reversible expansion from 30.0 L to 80.0 L.
Explain why the Rf values changed when the eluant was changed from 100% petroleum ether to a 95:5 mixture of petroleum ether-ethyl acetate. Why UV light is not a useful visualization technique in every circumstances?
Problem- Question- Elemental analysis of the unknown gas reveals that it is 30.45% N and 69.55% O. What is the molecular formula for this gas
using a sample 10.21 mol of o2 is maintained in a 0.8129 l container at the temperature of 300.3 kelvin. calculated
Write two equations to show the reaction of 4-Methylcyclohexene with (a)Br2/CH2Cl2 (b)KmnO4
Are the following reactions spontaneous, non-spontaneous, or not possible?
The solubility of MnSO4 in water at 20C is 70g per 100mL of water. Is a solution at 20C that is 4.22M in MnSO4 is best explained as- saturated, unsaturated, supersaturated or hydrated
A student carried out a recrystallization and obtained a 105% yield of material with a broad melting point. The material was warmed gently resulting in a recalculated yield of 87% and a sharper melting point. Briefly explain these observations.
Depict a possible ways by which a molecule of hydrogen peroxide(HOOH) can form a hydrogen bond to a molecule of methyl amine (CH3NH2). NO explanations are required drawings only.
Determine the pH of 263 ml of solution which has [NH4I] = 0.300 M. Kb = 1.74 × 10-5 for NH3(aq)
Calculate the molarities of HC2H3O2 and NaC2H3O2 in the buffer solution you will prepare in this experiment. The buffer solution consists of 50mL and 0.20M of NaC2H3O2 and consists of 10mL and 1.0M of HC2H3O2
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