1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VladimirAG [237]
2 years ago
11

4720 kJ of energy are supplied to a material in order to raise its temperature by 65K. If the specific heat capacity of the mate

rial is 2730 J kg-1 K-1 then what is its mass?
Chemistry
1 answer:
algol [13]2 years ago
6 0

Answer : The correct answer for mass of material = 26.6 Kg

Given : Q = 4720 KJ

Change in Temperature ( ΔT ) = 65 K

Specific heat capacity of material ( c) = 2730 \frac{J}{Kg* K}

The relation between Q , ΔT , c and m are related by following formula :

Q = m* c*ΔT ,

where Q = Heat or energy absorbed or released

m = mass , c = specific heat ,ΔT = change in Temperature

Plugging value in heat formula :

4720 KJ = m * 2730 \frac{J}{Kg * K} * 65 K

4720 KJ = m * 177450 \frac{J}{Kg}

[[Converting 177450 \frac{J}{Kg}  to \frac{KJ}{Kg}

177450 \frac{J}{Kg}  * \frac{1 KJ}{1000 J}  = 177.450 \frac{KJ}{Kg} ]]

Dividing both side by 177.450 \frac{KJ}{Kg}

\frac{4720 KJ}{177.450 \frac{KJ}{Kg}}  = m * \frac{177.450\frac{KJ}{Kg} }{177.450\frac{KJ}{Kg} }

m = 26.6 Kg

You might be interested in
Is Ca + O --> CaO a balanced chemical equation? Is it obeying the law of conservation of matter? Question 5 options: Yes it i
iren [92.7K]

Answer is: Yes it is balanced. It has the same number of Ca and O on both the reactant side and the product side.

According to principle of mass conservation, number of atoms must be equal on both side of chemical reaction.

There is one calcium atom atom and one oxygen atom on both side of reaction, so chemical reaction is balanced.

7 0
3 years ago
Stochiometry .How many grams of CO2 is produced when excess CS2 reacts with 4 mols of O2? CS2+O2-SO2 Please balance equation.
Travka [436]

Mass of CO₂ produced : 58.67 g

<h3>Further explanation</h3>

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

CS₂ + 3O₂  -------> CO₂ + 2SO₂

mol of CO₂ based on mol of O₂ as a limiting reactant(CS₂ as an excess reactant)

From the equation, mol ratio of mol CO₂ : mol O₂ = 1 : 3, so mol CO₂  :

\tt \dfrac{1}{3}\times 4=\dfrac{4}{3}

mass  CO₂ (MW= 44 g/mol) :

\tt \dfrac{4}{3}\times 44=58.67~g

4 0
2 years ago
0.0145 moles of helium gas are introduced into a balloon so that the volume of the balloon is 2.54 liters. An additional amount
olga_2 [115]

Answer:

4.43L is final volume of the ballon

Explanation:

Avogadro's law of ideal gases states that <em>equal volumes of gases, at the same temperature and pressure, have the same number of molecules</em>.

The formula is:

\frac{V_1}{n_1} =\frac{V_2}{n_2}

Where V and n are volume and moles of the gas in initial and final conditions.

If the initial conditions are 0.0145 moles and 2.54L and final amount of moles is 0.0253moles, final volume is:

\frac{2.54L}{0.0145mol} =\frac{V_2}{0.0253mol}

V₂ = <em>4.43L is final volume of the ballon</em>

6 0
3 years ago
Approximately how long does it take for the moon's phases to change from a NEW moon to a FULL moon?
stiks02 [169]

Answer:

4 weeks

Explanation:

It takes 4 weeks for the cyclle to be happening again

8 0
3 years ago
Al + AgNO3 -&gt; Al(NO3)3 + Ag. As a balanced equation​
prisoha [69]

Answer:

Al + 4AgNO3 >>Al(NO3)3+ 3Ag

Explanation:

the number of moles of No3 of the products is 3 therefore we have to balance the reactants by adding 3 before the "AgNO3" which also leades us to adding 3 mols to Ag on the products side

4 0
2 years ago
Other questions:
  • What is the isotopic notation for phosphorus
    12·1 answer
  • Absolute zero is
    13·1 answer
  • A strong oxidizing agent _____.
    9·2 answers
  • The Tris/Borate/EDTA buffer (TBE) is commonly made as a 5x solution. What volumes of 5x TBE and water are required to make 500 m
    9·1 answer
  • The reaction between between common salt and concentrated tetraoxosulphate(vi) acid will liberate
    15·2 answers
  • Explain archimedic principal with neat sketch ​
    10·1 answer
  • What can you infer is causing the cryosphere to change? Give two reasons. Explain why.
    12·1 answer
  • Does anyone want to do stoichiometry? <br> im so tired of chemistry.
    13·2 answers
  • Antimony has two naturally occuring isotopes, Sb121 and Sb123, Sb121 has an atomic mass of 120. 9038 u , and sb123 has an atomic
    13·1 answer
  • Does a negative ΔH mean that the heat should be treated as a reactant or as a product?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!