Master Chemistry with Fun Quizzes & Brain Teasers!

the critical pressure of a substance is the a. pressure at which liquid and vapor phases are in equilibrium at 1 atmosphere b. lowest pressure above which a substance cannot be liquified at any temperature c. pressure at which the solid, liquid, and vapor phases are all in equilibrium d. pressure at which the vapor pressure of the liquid is equal to the external pressure e. pressure at which the vapor pressure of the liquid is equal to 760 mmhg
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an ideal gas is brought through an isothermal compression process. the 5.00 mol of gas goes from an initial volume of 224.2 cm3 to 104.3 cm3 . if 1842 cal is released by the gas during this process, what is the temperature of the gas? [1 cal
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the quest for additional mineral deposits has led to the underwater search for so-called massive sulfides, which are enormous concentrations of:
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which of the following is false about crystal field theory? group of answer choices weak field ligands absorb purple light. the color of a coordination compound is the color of light absorbed.
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write a net ionic equation to show why solid barium hydroxide, ba(oh)2 (s), forms a basic solution when it dissolves in water.
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this is the chemical formula for cassiterite (tin ore): a geochemist has determined by measurements that there are moles of tin in a sample of cassiterite. how many moles of oxygen are in the sample? round your answer to significant digits.
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Suppose the galvanic cell sketched below is powered by the following reaction: Mg(s)+ SnSO 4(aq) MgSO4(aq)+ Sn(s) er E1 E2 S1 S2 Write a balanced equation for the half-reaction Write a balanced equation for the half-reaction that happens at the anode of this cell Of what substance is E1 made? Of what substance is E2 made? What are the chemical species in solution S1? What are the chemical species in solution S2?
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Suppose the galvanic cell sketched below is powered by the following reaction: Mn(s)+NiSO4(aq) + MnSO4(aq)+Ni(s) E1 E2 S1 S2 Write a balanced equation for the half-reaction that happens at the cathode of this cell. Write a balanced equation for the half-reaction that happens at the anode of this cell. DO. Of what substance is El made? 5 ? Of what substance is E2 made? What are the chemical species in solution Sl? What are the chemical species in solution S2?
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what causes the atomic radius of the elements to decrease across period 3 from left to right?
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Question 1Below is a picture of the rock strata of a mountain.What can you infer about the layers in this picture?
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methanol burns two different gases were produced other gas turned lime water cloudy give the name of the gas
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What elements have six valence electrons ?
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According to Boyles law, what will happen to the gas in the system below if the pressure is decreased at constant temperature?
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step 4: if a chiral center is formed from grignard addition, a mixture of enantiomers will be formed. the grignard reagent can attack at either the top face or bottom face of the carbonyl to give an equal mixture of chiral products. which carbonyls will give an achiral product after a grignard reaction with ch3mgbr ?
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we dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution? we dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution? 1.21% 123% 1.23% 2.42% none of the above
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What makes a field forever unique?
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In which of the following compounds would the carbon-carbon bond angle diverge the greatest from the ideal tetrahedral angle?
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can someone plase help me i dont own this
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. What happens when metals react with water?
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14. A large helium balloon has a volume of 3.00 L when the pressure on the balloon is 2 atm.What volume would the balloon have if the pressure was 8 atm?
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At equilibrium, a mixture of N_2, H_2, and NH_3 gas at 500C is determined to consist of 0.602 mol/L of N_2, 0.420 mol/L of H_2, and 0.113 mol/L of NH_3. What is the equilibrium constant for the reaction N_2(g) + 3H_2(g) 2NH_3(g) at this temperature?
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which salt dissolves in water to form an acidic solution ammonium nitrate sodium ethanoate potassium chloride sodium hydrogen carbonate
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ou would expect benzoic acid to be quite multiple choice soluble in water. soluble in aqueous base. soluble in aqueous acid. insoluble in any aqueous solution.
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a is a solid, naturally occurring, cohesive substance composed of minerals or mineral-like materials. a. tetrahedron b. rock c. mineral d. mixture
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