CAlculate the mass of the sample in grams Science Assignment Help

CAlculate the mass of the sample in grams Science Assignment Help. CAlculate the mass of the sample in grams Science Assignment Help.

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A sample of ethanol (C2H5OH) was burned completely in a bomb calorimeter whose total heat capacity is 30.75 kJ/oC. The temperature of the calorimeter plus the contents increased from 25.6oC to 33.1oC.

Knowing that ethanol’s heat of combustion is -1920 kJ/mol, calculate the mass of the sample (in g).

CAlculate the mass of the sample in grams Science Assignment Help[supanova_question]

The hydronium ion concentration of an aqueous solution of 0.581 M benzoic acid, Science Assignment Help

The hydronium ion concentration of an aqueous solution of 0.581 M benzoic acid, C6H5COOH (Ka = 6.30E-5) is

[H3O+] =  M.

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In the laboratory, a general chemistry student measured the pH of a 0.581 M aque Science Assignment Help

In the laboratory, a general chemistry student measured the pH of a 0.581 M aqueous solution of benzoic acid, C6H5COOH to be 2.236

Use the information she obtained to determine the Ka for this acid.

Ka(experiment) =

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Calculate the mass of the sample in grams Science Assignment Help

A sample of ethanol (C2H5OH) was burned completely in a bomb calorimeter whose total heat capacity is 30.75 kJ/oC. The temperature of the calorimeter plus the contents increased from 25.6oC to 32.7oC.

Knowing that ethanol’s heat of combustion is -3330 kJ/mol, calculate the mass of the sample (in g).

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biology help please???????????? Science Assignment Help

1. The
upper chambers of the heart are the _____

1. The
lower chambers of the heart are the _____

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HCN + (CH3)3N(CH3)3NH+ + CN- (CH3)3N (CH3)3NH+ HCN CN- Stronger Bronsted-Lowry Science Assignment Help

HCN + (CH3)3N(CH3)3NH+ + CN

 (CH3)3N
 (CH3)3NH+
 HCN
 CN–
 Stronger Bronsted-Lowry acid
 Weaker Bronsted-Lowry acid
 Stronger Bronsted-Lowry base
 Weaker Bronsted-Lowry base

HCN + (CH3)3N(CH3)3NH+ + CN- (CH3)3N (CH3)3NH+ HCN CN- Stronger Bronsted-Lowry Science Assignment Help[supanova_question]

assume that postage rates are \$0.44 for the first ounce, plus \$0.20 for each additional ounce, and t Mathematics Assignment Help

Here is the actual question:

Assume that postage rates are \$0.44 for the first ounce, plus \$0.20 for each additional ounce, and that each letter carries one \$0.44 stamp and as many \$0.20 stamps as necessary. Graph the function f that models the number of stamps on a letter weighing x ounces over the interval (0,5].

I need the function that this word problem makes. I really need step by step instructions but, I have no idea how to do it. Please help.

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Acceleration of an object Science Assignment Help

 Question Part Points Submissions Used
An object moving with uniform acceleration has a velocity of 11.0 cm/s in the positive x-direction when its x-coordinate is 2.94 cm. If its x-coordinate 2.35 s later is −5.00 cm,what is its acceleration?

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The hydroxide ion concentration of an aqueous solution of 0.581 M acetic acid is Science Assignment Help

The hydroxide ion concentration of an aqueous solution of 0.581 M acetic acid is

[OH] =  M.

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For the following reaction, K < 1. Science Assignment Help

For the following reaction, < 1. Classify each of the reactants and products based on their strength as Bronsted-Lowry acids or bases.

HClO + C9H7NClO + C9H7NH+

 HClO

 C9H7N

 C9H7NH+

 ClO–

 Stronger Bronsted-Lowry acid

 Weaker Bronsted-Lowry acid

 Stronger Bronsted-Lowry base

 Weaker Bronsted-Lowry base

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CAlculate the mass of the sample in grams Science Assignment Help

CAlculate the mass of the sample in grams Science Assignment Help