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Chemistry

Uriah Montes

A system uses 49 J of energy to do work, and the change in internal energy is 58 J. How much heat was added to the system?

9 J

97 J

107 J

117 J

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Chemistry

Guest

What best explains the reason solids have a definite shape and volume? A. the molecules in solids move past each other easily. B. the molecules in solids stay in a definite location and vibrate. C. the molecules in solids move freely in all directions. D. the molecules in solids do not move at all.

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Chemistry

Damari Byrd

Which two organic compounds share a functional group?

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Chemistry

Juliet Fuentes

What will happen when additional reactants are added to a system at equilibrium?

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Chemistry

Guest

Which answer choice correctly names the element that Mendeleev predicted would be discovered and

placed in the aluminum column?

O sodium (Na)

O gallium (Ga)

helium (He)

carbon (C)

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Chemistry

Giovanna Hart

when copper combines with oxygen, copper (II) oxide is formed. if 7.0 mol of copper reacts with 4.0 mil of oxygen, what amount of the excess reactant remains?

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Chemistry

Maximilian Carey

The cardiovascular system consist of

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Chemistry

Haiden Russo

To find out why bread left on a kitchen counter eventually mold is an example of what?

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Chemistry

Jaron Snow

What is element 115, where did it came from, and what is it used for?

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Chemistry

Bryan Williams

On the enzyme hexokinase, ATP reacts with glucose to produce glucose 6-phosphate and ADP five orders of magnitude faster than ATP reacts with H2O to form phosphate and ADP. The intrinsic chemical reactivity of the - OH group in water is about the same as that of the glucose molecule, and water can certainly fit into the active site. Explain this rate differential in two sentences or less.

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Chemistry

Macie Navarro

Calculate the molarity of a solution prepared by diluting 100 mL of 180 M HCl with enough water to make 2500 mL of solution

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Chemistry

Kade Spencer

The average radius of a molecule of lysozyme, an enzyme in tears, is 1.430 * 10^-3 um. What is its radius in millimeter? Enter your answer in scientific notation.

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Chemistry

Myah Nash

The formation constant for the following reaction is Kf = 5.6 108 at 25°C. Ni2 + (aq) + 6 NH3 (aq) Ni (NH3) 62 + (aq) (a) Determine G0 at this temperature. kJ/mol (b) If standard-state concentrations of the reactants and products are mixed, in which direction does the reaction proceed? The reaction proceeds to the. (c) Determine G when [Ni (NH3) 62+] = 0.017 M, [Ni2+] = 0.0015 M, and [NH3] = 0.0058 M. kJ/mol (d) If these concentrations are mixed, in which direction will the reaction proceed to achieve equilibrium? The reaction proceeds to the.

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Chemistry

Omar

Nora walks down a street and sees a ball dropped from a building. It falls on the ground. Nearby, an iron nail is attracted towards a magnet. Which statement is true about the ball and the nail?

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Chemistry

Allisson Bush

Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pressure conditions?

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