Hydrogen gas has been suggested as a clean fuel because it produces only water vapor when it burns. if the reaction has a 78.0% yield, what mass of hydrogen forms 545 kg of water?

How many grams of cacl2 are needed to make 713.9 g of a solution that is 29.0% (m/m) calcium chloride in water? note that mass is not technically the same thing as weight, but % (m/m) has the same meaning as % (w/w) ?

What is the mass of 3.022 moles of cobalt?

If the titration of 25.0 mL sample of hydrochloric acid (HCl) requires 22.15 mL of 0.155M sodium hydroxide (NaOH), what is the molarity of the acid?

Urea CO (NH2) 2 as a solid and water as a gas can be made from the reaction of gaseous carbon dioxide and ammonia. If 12.0g of carbon dioxide reacts with 15.

The specific heat of a substance is the energy required to produce a certain change in

The subatomic particle that has the least mass is the ...

Which two properties are used to define matter? has mass and conducts heat has buoyancy and volume has mass and takes up space conducts energy and has characteristic properties

Calculate the energy if 48.7 g of Al reacts in the following reaction. (Al = 26.98 g/mol) Fe2O3 (s) + 2 Al (s) →Al2O3 (s) + 2Fe (s) ∆Hrxn = - 852 kJ.

Which type of wave has a wave perpendicular to the disturbance? Surface Longitudinal Mechanical Tranverse

Caffeine's molecular formula is c8h10n4o2. the molar mass of caffeine is 194g/mol. what is the percentage of carbon in caffeine