Chemistry

) A concentration cell is based on the aqueous reactionCu2+(1.00 M) Cu2+(0.0100 M)The cell consists of copper electrodes dipping into solutions of Cu2+ ions. The anions present are sulfate ions. Draw a neat diagram to represent this cell, showing and labeling all necessary components including: anode, cathode, electron flow, cation flow and anion flow.
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What is the Big bang Theory
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What is the charge on an electron?
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The image shows two different species. the image is a dog and a lizered Which is a shared characteristic of these two species? tailscales hair body shape
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Which organisms can digest cellulose? A. all animals that eat other animals B. most animals, including humans C. all plant-eating animals D. only a few kinds of microorganisms
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Which has more total Heat Energy/A.) A cup of HOT coffee B.) A thermos of HOT coffee C.) They both have the same amount to heat energy
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The two products that are formed when a solution of HNO3 and a solution of NaOH react are water and?NaNO2NaNO3NaHNONaHNO3
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An atom of which element has the largest atomic radius?A)BB)BeC)ND)Ne
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A sample of a compound contains 60.0 g C and 5.05 g H. Its molar mass is 78.12 g/mol. What is the compounds molecular formula?
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Why do the atoms in a molecule want to be so far apart? (Mention Electron domains/Electrons)
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Consider the intermediate chemical reactions.2 equations. First: upper C a (s) plus upper C upper O subscript 2 (g) plus one half upper O subscript 2 (g) right arrow upper C a upper C upper O subscript 3 (s). Delta H 1 equals negative 812.8 kilojoules. Second: 2 upper C a (s) plus upper O subscript 2 (g) right arrow 2 upper C a upper O (s). Delta H 2 equals negative 1, 269 kilojoules.The final overall chemical equation is Upper Ca upper O (s) plus upper C upper O subscript 2 (g) right arrow upper C a upper C upper O subscript 3 (s).. When the enthalpy of this overall chemical equation is calculated, the enthalpy of the second intermediate equation
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What is the difference between a haploid species and a diploid species?
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What is a conductorWhen electrons move easily though objectsWhen electrons cannot move easily through objectsWhen electrons are at rest
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Which is a property of every heterogeneous mixture?The mixture is made up of at least two different states.The mixture is made up of something dissolved in a liquid.The composition of the mixture is the same throughout.The characteristics of the mixture change within a sample.
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How could you test each molecule todetermine if it was DNA or RNA?
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An exothermic reaction releases 13,450J of heat. How many calories of energy are released? A) 5 56,274 calories B)1,244 caloriesC) 134,500 caloriesD) 3,215 calories
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Please help with questions 7-12
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Select the correct answer.Which statement best describes the image?A. Ocean temperatures are relatively stable. During the day, the ocean cools the hotter air temperatures above land.B. Ocean temperatures are relatively stable. During the night, the ocean heats the cooler air temperatures above land.C. Ocean temperatures experience high fluctuations. During the day, the land cools the hotter air temperatures above the ocean.D. Ocean temperatures experience high fluctuations. During the night, the land heats the cooler air temperatures above the ocean.
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Which pigment is responsible for grey hair?AEumelaninPheomelaninBoth Eumelanin and PheomelaninDNo pigment3 of 10
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Using the diagram of the forces on an airplane, which arrow represents the force of gravity?A)AB)BC)CD)D
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A gas has a volume of 3.25 liters at 54 C and 231 kPa of pressure. At what temperature will the same gas take up 4.35 liters of space and have a pressure of 168 kPa?
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The theoretical yield is the amount of product actually produced. a. Trueb. False
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Need help with these three pls!!
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This group of fungi has reproductive cells with flagella so that they can swim
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