Consider the balanced chemical equation 2c2h6+7o2 - 4co2+6h20. how many moles of h 2 o are produced when 1.0 mol of c 2h 6 reacts with excess o2?

Two hundred grams of a substance requires 18.8 kJ of heat to raise its temperature from 25°C to 45°C. Use the table to identify the substance. q = mCT. Mass (m) is in grams. Temperature is in degrees Celsius. water ammonia gasoline air

Edith will be handing out school spirit ribbons in class on Monday. She needs 70 ribbons that are each 20 cm long - a total of 1,400 cm of ribbon - but the fabric store only sells ribbons by the meter. How many meters of ribbon does Edith need?

What are the parts of the Kinetic Theory of Matter?

What do scientists use to increase the surface area of a solute? heat a beaker a mortar and pestle a flask a stir bar

Which molecule (s) contain peptide bond (-CONH - A - Glycogen B - Lipid C - Protein D - None of the above selection are correct

All bodies of water make up a earth's A. atmosphere B. asthenosphere C. hydrosphere D. lithosphere

Which characteristic provides clues to how igneous rocks were formes? A textures B color C luster D streaks

If your heart beats an average of 68 times per minute, how many times will your heart beat in an hour? In a day? In a week? Show all work

The gas described in parts a and b has a mass of 1.66 g. the sample is most likely which monatomic gas?

What is the oxidation number of N in NH4NO3