How do you find the atomic weight of the element in amu
A certain element has two isotopes with Abundance and Mass as 73%, 99 amu, and 27%, 118 amu. How do you find the atomic weight of the element in amu?
Expected delivery within 24 Hours
Dilute Hydrochloric acid is added to a 0.500 g sample of alloy containing zinc and copper. The gas evolved (79.7 mL) is collected over water at 23 C and the barometric pressure of 737 mmHg.
A generic vinegar, 4.5 % acetic acid, costs 95 cents for an 8 oz bottle and $ 2.79 for a quart bottle. which is cheaper? Calculate the cost of each bottle in $/g acetic acid.
A 48-g sample of a gaseous fuel mixture contains 0.57 mole fraction propane,C3H8; the remainder of the mixture is butane,C4H10. What are the masses of propane and butane in the sample?
Vanillin, C8H8O3, occurs naturallyin vanilla extract and is used as a flavoring agent. A 42.5-mg sample of vanillin was dissolved in181.5 mg of diphenyl ether,(C6H5)2O. What is the molality of vanillin in the solution?
Decision management, Please include references etc..........................................................................
The ionization constant Ka of the indicator chlorophenol redis 1.0x10^-6. The color of the nonionized form of the indicator(HIn) is yellow and that pf the ionized form (In-) is red. What is the color of the indicator in a solution whose pH is 8.oo
If the temperature rise of the calorimeter with water was .570 degrees C, calculate the enthalpy of combustion of magnesium. Mg+1/2 O2 produces MgO
What is the osmotic pressure of a solution prepared from 13.7g of the electrolyte HCl and enough water to make 0.500L of solution at 18 degrees C?
1945857
Questions Asked
3,689
Active Tutors
1428497
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Please explain whether clinical practice guidelines exist for schizophrenia in older adults, and if so, use them to justify your recommendations.
What are the risks and benefits of the FDA-approved medicine Aripiprazole? What are the risks and benefits of the off-label drug Lamotrigine?
Please recommend one FDA-approved drug, one off-label drug, and one nonpharmacological intervention for treating schizophrenia in older adults.
A reputable academic institution just published a clinical study in a peer-reviewed journal reporting that study participants reduced serum cholesterol levels
Discuss the origins of the modern system of surveillance for disease and how the task force should consider utilizing alternative sources of data
What steps can teachers take to design an aligned lesson plan from instruction to the test? How does the alignment impact learner outcomes?
Which of the following characteristics is consistent with evidence-based practice?