Interpretation: The evidence that support putting hydrogen in group
Concept introduction: Alkali metals are found in group
To determine: The evidence that support putting hydrogen in group
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Chemistry: An Atoms First Approach
- Write balanced chemical equations for the following reactions: (a) cadmium burned in air. (b) elemental cadmium added to a solution of hydrochloric acid. (c) cadmium hydroxide added to a solution of acetic acid, CH3CO2Harrow_forwardThe following reactions are all similar to those of the industrial chemicals. Complete and balance the equations for these reactions: (a) reaction of a weak base and a strong acid. NH3+HClO4 (b) preparation of a soluble silver salt for silver plating. Ag2CO3+HNO3 (c) preparation of strontium hydroxide by electrolysis of a solution of strontium chloride SrCl2(aq)+H2O(l)electrolysisarrow_forwardGive the formula for the acidic oxide of (a) HNO3 (b) HNO2 (c) H2SO4arrow_forward
- What are the two most abundant elements by mass in the earths crust, oceans, and atmosphere? Does this make sense? Why? What are the four most abundant elements by mass in the human body? Does this make sense? Why?arrow_forwardHow many grams of gaseous ammonia will the reaction of 3.0 g hydrogen gas and 3.0 g of nitrogen gas produce?arrow_forwardOver coffee and croissants at breakfast one day, your friend Lena (an expert chemist) says this: "Group 1A metal hydrides react with water to produce hydroxides and hydrogen gas." Using Lena's statement, and what you already know about chemistry, predict the products of the following reaction. Be sure your chemical equation is balanced! NaH(s) + H2O(l) ->arrow_forward
- Name the three possible oxides which form with alkali metals and alkaline earth metals. Name one example(including chemical formula) of each.arrow_forwardGive some examples of Metallic hydrides?arrow_forwardArchimedes tells us the lifting power of a balloon (how much mass it can lift) is equal to the difference between the mass of the balloon and the mass of the air it displaces. That is, if the balloon occupies the same volume as 10 kg of air, but the balloon only weighs 2 kg, then the balloon can lift 8 kg. Airships have sometimes been filled with hydrogen (H₂), but hydrogen is very flammable, and after the Hindenburg caught fire and crashed in 1937 with serious loss of life airships have nearly always been filled with helium (He) instead. Passengers with H₂: Passengers with He: gas 0 H₂ He air density 0.090 0.18 1.23 kg 3 m kg 3 m kg Suppose a new airship Star of Balogna will have the shape of a cylinder 100. m long, with a radius of 15.0 m, and will weigh 9250. kg without any gas inside it. Suppose also the average passenger weighs 82 kg. Calculate how many passengers the Balogna could carry if it were filled with hydrogen, and also if it were filled with helium. marrow_forward
- Calculate the equilibrium constant, K , at 25.0 °C for each of the reactions. Use the thermodynamic information provided in the table. The hydrogenation of acetylene to ethane. C,H, (g) + 2H, (g)=C,H,(g) Compound AG; (kJ · mol-1) K = CH;CI(g) 48.50 CH,(g) -50.72 C,H, (g) 209.2 C,H,(g) -32.82 Cl, (g) 0.00 H,(g) 0.00 H, O(1) -237.13 HCl(g) -95.30 HNO, (aq) -111.25 NO(g) 86.55arrow_forwardWrite the balanced molecular chemical equation for the reaction of solid magnesium with aqueous copper(II) nitrate.arrow_forwardThe Properties, Reactions and Applications of Oxygen Explain the classification of oxides as basic, acid, amphoteric and neutral. How can we predict whether an oxide will be acidic or basic based on its composition? Give an example of an amphoteric oxide and give two typical reactionsarrow_forward
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