Question

9:27 Select the quantity that contains the least number of moles. a) 1.50 g of N HA b) 2.00 g of Mg c) 1.00 g of CH4 d) 0.52 g of H2 Consider the following balanced chemical reaction: 2 C,H,0 + 5 OZ ----------> 4CO2 + 4 H,0 How many grams of O2 are required to react completely with 50.0 g of C,H,O? Indicate whether the following statement concerning evaporation is true or false Evaporation causes the internal temperature within the body of the liquid to decrease. a) true b) false 10 Which of the following statements is correct concerning the bonds present in NCIS? a) 3 single bonds are present b) 1 double bond is present c) 2 double bonds are present d) 1 triple bond is present e) 2 unshared pairs of electrons are on the N atom

Answer 1

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