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Questions in chemistry

[Terjawab] 48 dm\(^3\) of a gas has a mass of 262 g. a. How many moles is this? b. What is the \(M_r\)? c. What must this element be?

[Terjawab] What do you notice about the elements on the reactant and product sides of the equation?

[Terjawab] An ideal gas in a sealed container has an initial volume of 2.55 L. At constant pressure, it cools to 16.00 degrees Celsius, resulting in a final volume of 1.75 L. What was the initial temperature?

[Terjawab] Explain the reason for sodium's location in the periodic table, detailing both its position in its group and its period.

[Terjawab] What is the mass of [tex]H_2O[/tex] produced when 10.0 grams of [tex]H_2[/tex] reacts completely with 80.0 grams of [tex]O_2[/tex]? A. 70.0 grams B. 90.0 grams C. 180.0 grams D. 800.0 grams

[Terjawab] What is the electronegativity of PCl₃?

[Terjawab] Calculate the pH of a buffer that is 0.13 M in lactic acid and 0.11 M in sodium lactate.

[Terjawab] Water's _____ property creates positive and negative ions, which are essential for chemical reactions. a. ionization b. acidic c. basic d. cohesive

[Terjawab] What are the top 10 facts about animal cells?

[Terjawab] If you determined that the volume of a silver bar is 100 mL, how many atoms of silver would be in the bar? The density of silver is 10.5 g/mL.