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mafiozo [28]
3 years ago
8

It takes 770 joules of energy to raise the temperature of 50.0 g of Mercury by 110°C. What is the specific heat capacity of merc

ury?
Chemistry
1 answer:
Olegator [25]3 years ago
5 0

Answer:

0.14 J/g°C.

Explanation:

  • To calculate the specific heat capacity of Hg, we use the relation:

<em>The amount of heat absorbed by Hg = Q = m.c.ΔT.</em>

where, m is the mass of Hg (m = 50.0 g).

c is the specific heat capacity of Hg = ??? J/g°C.

ΔT is the temperature difference = (final T - initial T = 110.0°C).

∴ The amount of heat absorbed by Hg = Q = m.c.ΔT = 770.0 J.

∴ 770.0 J = (50.0 g)(c)(110.0°C).

<em>∴ c = Q/m.ΔT =</em> (770.0 J)/((50.0 g)(110.0°C) = <em>0.14 J/g°C.</em>

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Determine the theoretical yield of H2S (in moles) if 4.0 molAl2S3 and 4.0 mol H2O are reacted according to the followingbalanced
mamaluj [8]

Answer:

The theoretical yield of the hydrogen sulfide is 68.0 grams.

Explanation:

Al_2S_3(s)+6H_2O(l)\rightarrow 2Al(OH)_3(s)+3H_2S(g)

Moles of aluminum sulfide = 4.0 mol

Moles of water = 4.0 mol

According to reaction, 6 moles of water reacts with 1 mole of aluminum sulfide,then 4 moles of water will react with :

\frac{1}{6}\times 4 mol=1.5 mol of aluminum sulfide

1.5 moles aluminum sulfide < 4 moles  aluminum sulfide

This means that water is present in limiting amount and aluminum sulfide is in excess amount.So, amount of hydrogen sulfide will depend upon moles of water.

According to reaction, 6 moles of water gives with 3 mole of hydrogen sulfide,then 4 moles of water will give :

\frac{3}{6}\times 4 mol=2.0 mol of hydrogen sulfide

Mass of hydrogen sulfide:

2.0 mol × 34 g/mol = 68.0 g

The theoretical yield of the hydrogen sulfide is 68.0 grams.

7 0
3 years ago
Living things change over time in response to
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Change in their environment
8 0
4 years ago
Which of the following statements about the periodic table is true
JulsSmile [24]

Answer: Elements in the same column are similar in their properties

Explanation: The columns on the periodic table are also know as group of the periodic table elements in the same group of the periodic table tends to have similar chemical properties because they all have the same number of valence electrons in their outermost shell. This plays an important roles in their reactivity and properties

7 0
4 years ago
When using the process of evaporation to separate a mixture, what is left behind
brilliants [131]

Answer:

When a solution is heated, the solvent evaporates, leaving behind the dissolved solids as residue. When a solution containing dissolved solutes is heated, the solvent will evaporate. Only the solute will remain in the evaporating dish.

hope it helps! please mark me brainliest

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8 0
3 years ago
Give the name and formula for the acid derived from each of the following anions:<br> (c) bromite
Travka [436]

The name of the acid is Bromous acid and the Formula of the acid is HBrO₂.

<h3>What is Acids ? </h3>

Acids is defined as substances that is able to donate a proton or hydrogen ion to other substance. Acids acts as proton donor.

<h3>What is Oxoacids ? </h3>

An oxoacids is an acids that contains oxygen. It is also called oxyacids or ternary acids. Oxoacids are the acids of oxoanions.

If anion name contains the suffix ‘ate’ then replace ‘ate’ with ‘ic’.

If anion name contains the suffix ‘ite’ then replace ‘ite’ with ‘ous’.

Given anion is bromite. Formula of bromite is BrO₂⁻. It is an oxoanion.

Now write the name of acid. Here anion name contains the suffix ite so replace the ‘ite’ of bromite with ‘ous’.

The name of the acid is Bromous acid.   

Formula of the acid is HBrO₂.

Thus from the above conclusion we can say that The name of the acid is Bromous acid and the Formula of the acid is HBrO₂.

Learn more about Oxoacids here: brainly.com/question/21795128

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4 0
2 years ago
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