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3 years ago

how much heat does a titanium block absorb if 15g are heated from 40 C to 65C the specific heat of titanium is .544J/g C

Chemistry

1 answer:

Mashutka [201]3 years ago

3 0

Answer:

The heat does a titanium block absorb is 204 J.

Explanation:

We have,

Mass of titanium block is 15 g

Initial temperature is 40° C and final temperature is 65° C.

Specific heat of titanium is 0.544 J/g C

It is required to find the heat does a titanium block absorb. The heat absorbed by the block is given by :

$Q=mc\Delta T\\\\Q=15\times 0.544\times (65-40)\\\\Q=204\ J$

So, the heat does a titanium block absorb is 204 J.

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What is the empirical formula of a compound containing 5.03 grams carbon, 0.42 grams hydrogen, and 44.5 grams chlorine?

Thepotemich [5.8K]

Answer:

CHCl₃

Explanation:

Given parameters:

Carbon = 5.03g

Hydrogen = 0.42g

Chlorine = 44.5g

The empirical formula shows the simplest formula of a compound.

To deduce the empirical, we need two pieces of information:

> Mass of the elements or the percentage composition of the compound

>The relative atomic masses of the elements

In order to derive the empirical formula from these parameters,

>>> find the number of moles of elements by dividing the mass given by the relative atomic mass of the respective atom

>>> Divide through by the smallest mole

>>> Approximate or multiply by a factor that would make it possible for whole numbers to be obtained

From the question, we have been given the mass of each element.

Now using the period table, we can obtain the relative atomic masses of each atom:

Carbon = 12gmol⁻¹

Hydrogen = 1gmol⁻¹

Chlorine = 37.5gmol⁻¹

C H Cl

Mass(in g) 5.03 0.42 44.5

Moles 5.03/12 0.42/1 44.5/37.5

0.42 0.42 1.19

Dividing

smallest 0.42/0.42 0.42/0.42 1.19/0.42

Mole ratio 1 1 2.83

Approximate 1 1 3

The empirical formula is CHCl₃

8 0

4 years ago

What is the mass of 20 moles of fluorine?

Daniel [21]

Answer:

380g

Explanation:

Given parameters:

Number of moles of Fluorine = 20moles

Unknown:

Mass of Fluorine = ?

Solution:

The number of moles is the unit of quantifying the amount of particles in a substance.

So;

Mass of a substance = number of moles x molar mass

Molar mass of F = 19g/mol

Now;

Mass of F = 20 x 19 = 380g

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3 years ago

Suppose you open up a package that arrived in the mail and a small group of insects fly out. They find their way to a door and d

JulsSmile [24]

Answer:

No because there is no oxygen in the package

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3 years ago

The lithosphere, hydrosphere, and ______________ are the abiotic parts of the planet.

VladimirAG [237]

The lithosphere, hydrosphere, and atmosphere are the abiotic parts of the planet.

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3 years ago

What assumptions do we make in order to use the Henderson-Hasselbalch equation? a. Both the weak acid and its conjugate base are

zepelin [54]

Answer:

The final and initial concentration of the acid and it's conjugate base are approximately equal, that is we use the weak acid approximation.

Explanation:

The Henderson-Hasselbalch is used to calculate the pH of a buffer solution. It depends on the weak acid approximation.

Since the weak acid ionizes only to a small extent, then we can say that [HA] ≈ [HA]i

Where [HA] = final concentration of the acid and [HA]i = initial concentration of the acid.

It also follows that [A^-] ≈ [A^-]i where [A^-] and[A^-]i refer to final and initial concentrations of the conjugate base hence the answer above.

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3 years ago