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Chemistry

Research about the reaction of baking soda and vinegar

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Tristian Stanley

Chemistry

What mass (in mg) does 2.63 moles of nickel have? 3.56 * 105 mg 1.54 * 105 mg 2.23 * 104 mg 129 mg?

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Chemistry

Given the propane molecule C3H8 (g) ! a) What is the balanced equation for the combustion of propane in O2? (20 pts.) b) What is the standard enthalpy change ΔH0 for the reaction at 25°C? (20 pts.) c) Finally, is this reaction exothermic or endothermic, under what condition is the answer to part b) the heat of the reaction? (10 pts.)

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Chemistry

Which of the following happens during a chemical change? Check all of the boxes that apply. One atom or more changes into atoms of another element. New substances with different properties are formed. Solids, liquids, or gases may form. Reaction mixtures always give off some heat. Reaction mixtures always need to be heated.

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Chemistry

Which has more inertia: a kilogram of cotton balls or a kilogram of gold?

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Chemistry

Democritus who lived in greece during the fourth century

b. c suggested that matter is made up of tiny particles that cannot be divided. what did he called them

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Chemistry

What is the root mean square of carbon iv oxide at 27°C?

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Chemistry

If maltose undergoes hydrolysis what subunits does it results to?

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Chemistry

Find the total mass of three diamonds that have masses of 14.2 grams, 8.73 grams, and 0.912 gram

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Chemistry

What is the correct equilibrium constant

expression for this equation?

2C0F, (g) CO2 (g) + CF_ (g)

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Chemistry

Write the mathematical expression that allows you to solve for the oh - concentration in water when you know only the h3o + concentration.

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Chemistry

How much energy is needed to melt 47.6g of water

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Chemistry

Jasmine has toast for breakfast every day. As soon as the toast pops out of the toaster, she puts butter on it. If she does it quickly, she can spread the butter over the toast with her knife, and it melts into the toast. Why does the butter melt? A. Because the pressure of her knife softens the butter B. Because heat from Jasmine's hand moves into the cool butter C. Because heat from the hot knife moves into the cool butter D. Because heat from the hot toast moves into the cool butter

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Chemistry

If a warm bottle of soda and a cold bottle of soda are opened which will effervesce more and why?

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Chemistry

The ksp of lead (ii) hydroxide, pb (oh) 2, is 1.43 * 10-20. calculate the solubility of this compound in g/l.

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