Which symbol represents a particle that has the same total number of electrons as S2-?

A) O2-

B) Si

C) Se2-

D) Ar

Analysis of a volatile liquid shows that it contains 62.04% carbon, 10.41% hydrogen, and 27.54% oxygen by mass. At 150.°C and 1.00 atm, 500. mL of the vapor has a mass of 0.8365 g. What is the molecular formula of the compound?

Go'=30.5 kJ/mol a) Calculate the equilibrium constant for this reaction at 25C. b) Because deltaGo' assumes standard pH of 7, the equilibrium constant calculated in (a) corresponds to Keq' =

What is a smooth endoplasmic reticlulum

Analyze the graph below and answer the question that follows. / In the graph above, the coordinates of the vertices of / are T (4, 4), U (2, - 2), and V (6, - 2). If / is reflected across the y-axis to create /, what are the coordinates of U'? A.

A container has the dimensions of 30 cm * 50 mm * 0.1 m. The density of its contents is 2.5 g/cm³. What is the mass of the substance in kilograms? d=m/v 3.8 kg 38 kg 380 kg 3,800 kg

Convert 3.5 x 10^23 K atoms to moles 0.58 moles 2.1 x 10^47 moles 5.8 x 10^45 moles 2.5 x 10^23 moles

Describe the composition of a lead storage battery

A 5.0g sample of aluminum with a specific heat of 0.90 j/g was heated from 22.1^c to 32.1^c. How much heat to the nearest joule did the aluminum gain?

How many moles of HI are present at equilibrium when 2.0 moles of H2 is mixed with 1.0 moles of I2 in a 0.50 L container and allowed to react at 448oC. At this temperature K = 50.

A laboratory manual gave precise instructions for carrying out the reaction described by the chemical equation, C2H6O + O2 C2H4O2 + H2O.