The burning of coal releases heat salt dissolving in water is physical change?

True

False

Scientific notation of 50500 up to three significant figures

If the gas in this flask is non reactive and monatomic which elements would it be

Increased irrigation demands: decrease the rate of transpiration increase the rate of surface water evaporation change the amount of precipitation in an area do not affect the water cycle

What is the molar mass of Mn (ClO3) 2? Explain how you calculated this value.

An atom of gold has a mass of 3.271*10^-22g. How many atoms of gold are in 5.00 g of gold?

What does homogeneous mixture of elements mean

As an acid is added to neutral water the [OH-] will

What is the mass in grams of 5.00moles of CH4? How many moles of oxygen gas O2, are present in a 38g sample of O2

25 In general, for a gas at a constant pressure, A the temperature of the gas is inversely proportional to its volume B. the temperature of the gas is inversely proportional to its pressure C.

The vapor pressure of ethanol is 54.68 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin. Calculate the vapor pressure of the solution at 25 °C when 8.054 grams of saccharin, C7H5NO3S (183.