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3 years ago

What is the mathematical equation used when solving calorimetry problems? What does each variable in the equation represent?

Chemistry

1 answer:

liubo4ka [24]3 years ago

7 0

Answer : The mathematical equation used when solving calorimetry problems is:

$q=m\times c\times \Delta T}$

Explanation :

Calorimetry : It is determining the changes in the energy of a system by measuring the heat transferred with surroundings.

Formula used :

$q=m\times c\times \Delta T}$

where,

c = specific heat capacity of calorimeter

m = mass of a substance

q = heat required

$\Delta T$ = change in temperature of substance

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How do you find products in a chemical equation?

sammy [17]

Answer:

the elements or compounds on the right side of the equation

Explanation:

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4 0

4 years ago

Consider the reaction for the combustion of butane (C4H10), a component of liquefied petroleum (LP) gas. 2C4H10(g)+13O2(g)→8CO2(

polet [3.4K]

Answer:

The answer to your question is:

a) 3.87 mol of CO2

b) 14.63 mol of O2

Explanation:

2C4H10(g) + 13O2(g) → 8CO2(g) + 10H2O(g)

CO2 = ?

Butane 0.968 moles

From the balance equation 2 moles of butane ---------- 8 moles of CO2

0.968 moles of butane ------ x

x = (0.968 x 8) / 2

x = 3.87 moles of CO2

moles O2 = ?

butane = 2.25 mol

From the balance equation

2 moles of butane ---------- 13 mol O2

2.25 mol ---------- x

x = (2.25 x 13) / 2

x = 14.63 mol of O2

5 0

3 years ago

Dna is approximately 2.5 nm in length. of an average man is 5 ft 10 in. tall, how many dna molecules could be stacked to extend

Angelina_Jolie [31]

To determine the number of dna molecules that can be stacked as requested in this item, we convert the given measurements in a single unit. For simplicity, we convert all the lengths to meters.

Length of DNA molecule = (2.5 nm)(1 x 10^-9 m/1 nm) = 2.5 x 10^-9 nm

Height of a person = (5 ft 10 in)(12 inches/ 1ft)(2.54 cm/1 in)(1 x 10^-2 m/ 1 cm)
= 1.778 m

Then, divide the height of the person by the length of a single DNA molecule.

n = 1.778 m / (2.5 x 10^-9)
n = 7.112 x 10^8

Hence, the number of DNA would be 7.112 x 10^9.

5 0

4 years ago

Read 2 more answers

Crude oil pumped out of the ground may be accompanied by formation water, a solution that contains high concentrations of nacl a

djverab [1.8K]

solution:

the change in the boiling point is given as,

dTbp =2.30°c

elevation constant for the solvent is given by,

kb=0.512°c/m

$molality=\frac{dTBP}{KB\times m}\\=\frac{2.30}{0.512c/m}$