Chemistry » Page 37

Chemistry

Julianna Ayala

Suggest what happens to the other elements from which bread and wood are made when these substances are burned

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Chemistry

Kyson Gardner

What is the formula mass of ethyl alcohol, C2H5OH

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Chemistry

Sanders

Which type of bonds or interactions between atoms is the strongest?

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Chemistry

Cornelius Wilkinson

How many moles are present in 16.2 g of lead?

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Chemistry

Asher Coffey

Why is a gas easy to compress than a liquid or a solid?

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Chemistry

Taliyah George

Hydrogen gas can be produced by reacting aluminum with sulfuric acid. how many moles of sulfuric acid are needed to completely react with 15.0 mol of aluminum? 2al (s) + 3h2so4 (aq) ® al2 (so4) 3 (aq) + 3h2 (g)

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Chemistry

Miguel Mayo

The reaction between sucrose and water to produce fructose and glucose is first order / / overall. The data below shows the change in concentration of sucrose over time at 298 K. C12H22011 (aq) sucrose + H2O (l) 艹C6H1206 (aq) fructose + C6H1206 (aq) oucose C12H2201l M Time (minutes) 1.002 0.808 0.630 0.0 60.0 130.0 a. Find the average rate ofdisappearance of C12H22011 from t = 0 min to t-60 min. b. Find the average rate of appearance of fructose from t 0 min to t 60 min. c. Calculate the rate constant, k, for the decomposition of sucrose at 25°C. Include units. d. How long will it take for the concentration of sucrose to drop from 1.002 to 0.212 M? e. What is the half-life for the decomposition of sucrose at 25°C?

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Chemistry

Marely Short

Identify whether each compound will ionize or dissociate in water. Sodium sulfate (Na2SO4) Ammonium phosphate ((NH4) 3PO4) Sulfuric acid (H2SO4) Potassium iodide (KI)

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Chemistry

Jamari Ford

The equation below shows hydrogen reacting with oxygen to produce water. 2H2+O2>2H2O if 16mol of oxygen were reacted with excess hydrogen gas, how many moles of water would be produced?

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Chemistry

Guest

The density of a metal is 9.80 g/mL. What is the mass of a sample of metal when dropped in 28.9 mL of water, the volume increases to 56.4 mL?

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Chemistry

Keshawn Hart

Does sound travel best through solids, liquids, or gases?

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Chemistry

Hayley Ayala

Which term refers to the number of molecules or atoms that participate as reactants in an elementary step in a chemical reaction? molecularity particulates reactants submolecular

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Chemistry

Brycen Pruitt

Due to food scarcity in ancient times people had to spend

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Chemistry

Danny

A group of the same species makes up a?

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Chemistry

Dominique Raymond

When the nonelectrolyte glucose is dissolved in water, the solution contains___.

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