J.R. S.

The numbers in the equation are subscripts *in front of compound are coefficients to balance the equation please show your work, so i can see how you did it(:

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Chemistry

05/10/17

Chemistry Homework

I've done most of my homework, but there were a few problems. Please answer these questions with an explanation, I don't just want an answer. 4) Why do electrolytic cells require an outside source... more

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Chemistry Moles Grams

05/10/17

How many grams of CO2 would be produced? - Show Work Please

Question: For the balanced equation shown below, if the reaction of 91.3 grams of C3H6 produces a 81.3% yield, how many grams of CO2 would be produced? Equation: 2C3H6 + 9O2 = 6CO2 + 6H2O

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Chemistry Equations Moles

05/10/17

What is the percent yield? - Show Work Please

Question: If the reaction of 20.7 grams of CaCO3 produces 6.81 grams of CaO, what is the percent yield? Equation: CaCO3 = CaO + CO2

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Chemistry Moles Grams

05/10/17

What is the theoretical yield of P4O10? - Show Work Please

Question: 23.9 grams of P4 react with 20.8 grams of O2, how many grams of P4O10 would be produced? Equation: P4 + 5O2 = P4O10 (already balanced)

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Chemistry Moles Grams

05/10/17

Theoretical Yield of H3PO4? - Show Work Please

Question: 93.8 grams of PCl5 react with 20.3 grams of H2O. How many grams of H3PO4 would be produced (theoretical yield)? Equation: PCl5 + 4H2O = H3PO4 + 5HCl

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Chemistry

05/10/17

The reaction of charcoal (carbon) and oxygen is sped up by grinding the charcoal into a fine powder. This is an example of:

The reaction of charcoal (carbon) and oxygen is sped up by grinding the charcoal into a fine powder. This is an example of: a. increasing surface area to increase reaction rateb. All of the... more

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Logarithms

05/10/17

Solve the problem.

The pH of a solution ranges from 0 to 14. Anacid has a pH less than 7. Pure water is neutraland has a pH of 7. The pH of a solution isgiven by pH = - log x where x represents theconcentration of... more

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Fractions Equations

05/10/17

solve: -9/28x + 24/28x +6x please show step by step

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Other

05/10/17

1 1/4 cups water makes 12 cakes, how much water do i need to make 6 cakes?

how do I find the fraction for 6 cakes or 24 cakes?

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Chemistry Redox Reaction

05/09/17

Spontaneous redox reaction

Determine the anode, cathode and overall cell potential for the following spontaneous redox reactions. Sn2+/Sn, Ag+/Ag & Na+/Na, Br2/Br-

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Chemistry

05/09/17

Chem help please!!

1) A sample of helium gas has a volume of302 mL at 0.52 atm. What pressure is neededto reduce the volume at constant temperatureto 69 mL?Answer in units of atm 2)A gas has a pressure of 2.35... more

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Math

05/09/17

28 books weigh 31 lbs. how much 45 weigh?

Question 28 books weigh 31 lbs. how much 45 weigh?

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Osmosis

05/09/17

Although osmosis is a passive process, it is influenced by?

Multiple choice question: A) the amount of ATP present. B) the ability of all the solutes to pass through the Cellular membrane. C) all of these. D) the molecular size of the water molecule.

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Other

05/09/17

Noncompetitive and competitive inhibitors of enzymes?

Multiple choice question : A) control amounts of substrate. B) destroy the structure of the enzyme and shut down that metabolism. C) may be used to control the amount of enzyme activity and hence... more

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Other

05/09/17