General Chemistry Answers

If that a chunk of potassium weighing 7.55g is dropped into 400.0g of water at 25°C, what is the final temperature (in °C) of the water if all the heat released is used to warm the water?

What unit is used to describe reaction rate?

The colour of red cabbage indicator is as below

original colour: purple

colour in acid :pink

colour in alkali :green

If a red cabbage has pink leaves.what can you infer about the soil it is growing in ?

 The boiling point of an aqueous solution is 102.5°C. What is the freezing point of the solution?

A solution of propylene glycol (antifreeze) in the car's radiator has a freezing point of -20°C. What is the molality of the solution?

Calculate the percent composition of Iron and oxygen in the product if the mass of iron is 7.874g and mass of oxygen is 1.429g

if it takes 24.8 ml of 1.20N acid to neutralize 3.25 g of a base, what is the equivalent weight of the base

The reaction of diatomic fluorine gas (F2) with compound X yields a single product, compound Y. The mass percent composition of the product, compound Y is 61.7% F2 and 38.3% Cl. What is the probable empirical formula for product Y? What is a probable empirical formula for compound X?

For the reaction



3 H2(g) + N2(g) ----------> 2 NH3(g)

what mass of NH3(g) is produced when 2.15 L of H2(g) measured at STP reacts?

For the reaction

MnO2(gas) + 4 HCl(aq) ----------> MnCl2(aq) + Cl2(g) + 2 H2O(l)

1. what volume of Cl2(g) measured at STP is produced when 7.65 g of HCl(aq) reacts?