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Finding Number of Atoms in a Molecule from Molecular WeightAs determined from the gas law, the molecular weight of a substance is eight times the atomic weight. How many atoms are in a molecule of the substance?
What volume of hydrochloric acid solution of 0.25 M must be diluted to prepare 1.00 L of 0.040 M HCl and calculate Keq at this temperature for the given reaction 2 NOCl (g) W 2 NO (g) + Cl 2 (g) ( reaction is at equilibrium):
Multiple choice questions in organic chemistry - Which of the following statements are true about the processes of melting and freezing?
Questions on chemical equations - Write a balanced equation for this reaction. Include the states of matter for each compound.
Compute the number of moles of sodium hydroxide ( NaOH ) in 23.75cm 3 of 0.150moldm -3
how many cans of Mountain Lightning would an individual have to drink to die from a tartrazine overdose If the LD50 of tartrazine in humans is supposed to be 12,750 mg/kg (as it is for mice) and the average human weighs 70 kilograms,?
An unknown compound contains carbon, hydrogen, oxygen, and sulfur atoms. When a 10.00 mg sample of the unknown compound was combusted, it produced 16.27 mg of CO2, 5.55 mg of water, and 7.90 mg of SO2.
Determine the ionization constant for Hypochlorous before addition of any Potassium hydroxide, KOH and after addition of 25.0 mL of KOH ?
Solving this question helps the student to understand how to find the limiting reactant and how much product is produced and What mass of product may be produced?
A 2.30 L sample of O2(g) was collected over a liquid at a total pressure of 785 torr and 25°C. When the O2(g) was dried (vapor of that liquid removed), the gas had a volume of 1.86 L at 25°C and 785 torr.
The pH of a bicarbonate-carbonic acid buffer is 8.00. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
Determine how many significant figures are there in the Fahrenheit result when 7.02C converted to Fahrenheit scale,?
Determine the mass of Cr 3 + in the original solution if The total mass of the precipitate = 49.6 .
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