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Benzene contains only carbon and hydrogen and 7.74% H by mass; the molar mass is 78.1 g/mol. What are the empirical and molecular formulas of benzene?

What volume is occupied by 19.6 g of methane, CH4, at 27 °C and 1.59 atm?

What is the molar mass of ammonium chloride? 

The process that occurs when beams of light are scattered from a regular array of points in which the spacing between the components is comparable with the wavelength of the light is known as: 

The compound CaCO3 can best be classified as a(n): 

Dosage Calculations: Round if required using rounding rules. Label your answers!!! Order: erythromycin stearate 0.5 g PO q12h Supply: erythromycin stearate 1,000 mg scored tablets Give:__________ tablet(s)

Convert the following.  Round to the nearest tenths place when rounding is required. Numeric answer SPACE then LABEL!!! 3 qt = __________ pints

Dosage Calculations: Round if required using rounding rules. Label your answers!!! Order: acetaminophen 120 mg PO q4h prn pain or temperature greater than 102 degrees F Supply: acetaminophen liquid 160 mg/teaspoon Give: _________mL

Dosage Calculations: Round if required using rounding rules. Label your answers!!! Order: phenobarbital 30 mg PO daily Supply: phenobarbital 15 mg unscored tablets Give:__________ tablet(s)

Elija 1 de las siguientes 2 opciones para responder:Opción 1 Declare una matriz de 3×3 de tipo int, inicialícela con los valores del 1 al 9. Muestre la matriz en formato de tabla (3 filas y 3 columnas). Opción 2 Escribe un programa que lea una cadena usando un arreglo de caracteres (C-style string), cuente cuántas vocales contiene, y muestre el resultado.Ejemplo de salida:Ingrese una palabra: computadora La palabra computadora contiene 5 vocales.