Luna Chen
Chemistry teacher | Verified Expert
With a passion for chemistry ignited during my studies at Hampton University, I'm dedicated to illuminating the intricacies of this fascinating subject. Armed with a comprehensive understanding, I guide students through the complexities of chemistry, fostering a deep appreciation for its principles. With years of experience and a commitment to excellence, I provide personalized assistance tailored to each student's needs. Together, we unravel the mysteries of atoms, molecules, and reactions, transforming challenges into triumphs. Join me on a journey of discovery and mastery in the captivating world of chemistry.
Questions
How many moles of molecules are in 35 g of octane, #C_8H_18#?
A 12. 2 g sample of X reacts with a sample of Y to form 78.9 g of XY. What is the mass of Y that reacted?
What is the Law of octave?
0.10 moles of sodium cyanate dissolved in 250cm^3 distilled water ,calculate pH?
You heat 0.158g of a white, solid carbonate of a Group 2 metal and find that the evolved #CO_2# has a pressure of 69.8 mmHg In a 285ml flask at 25°C .What is the molar mass of the metal carbonate?
At a total pressure of #"1 atm"#, if the mol percentages of #"CO"_2#, #"O"_2#, and #"N"_2# are #5%#, #15%#, and #80%# respectively, what are the partial pressures?
What do the four elements most abundant in life- carbon, oxygen, hydrogen, and nitrogen- have in common?
What factor(s) affect both the solubility and rate of dissolution of a solid?
How do you represent the redox reaction of chlorate ion, #ClO_3^(-)# with #SO_2(g)# to give #Cl^(-)# and #SO_4^(2-)#?
How many moles of nitrogen gas will occupy a volume of 347 mL at 6680 mmHg and 27 #"^o#C?
How can we know beforehand that free chlorine will form in MnO2+4HCl -> MnCl2 +Cl2+2H2O?
How can liquids be separated by density?
Soap is made from a strong base and oil. Do you think the pH of soap is 4 or 9?
The Empire State Building has a height of 1250 ft. What is this height in meters, in scientific notation with three significant figures?
Should we add a base to water, or do the reverse?
How many significant digits are in the number 5.40?
The air pressure inside a passenger tire is 228 kPa. What is this pressure in atmospheres?
Why do disaccharides and polysaccharides give positive Molisch Test?
Ethene undergoes incomplete combustion to form carbon dioxide, carbon monoxide and water vapour. If the ratio of carbon dioxide to carbon monoxide formed is 9:1 when x cm^3 of ethene is burnt, what is the volume of oxygen gas consumed in the reaction?
How is nuclear energy produced from the fission of uranium atoms?